Alaska Geobotany Center Library

All Publications and Proceedings

  1. 2015

    1. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Bieniek, P.A., Epstein, H.E., Comiso, J.C., Pinzon, J.E., Tucker, C.J., Steele, M.A., Ermold, W. and Zhang, J. 2015. Changing seasonality of Pan-Arctic tundra vegetation in relation to climatic variables. (in prep for special issue of Environmental Research Letters on biomass).
    2. Bieniek, P.A, Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Pinzon, J.E., Tucker, C.J., Thoman, R.L., Tran, R.L., Molders, N., Steele, M., Zhang, J. and Ermold, W. 2015. Climate drivers of changing seasonality of Alaska coastal tundra vegetation productivity. (submitted to Earth Interactions, Jan 31, 2015).
    3. Buchhorn, M., Curry, T., Kanevskiy, M., Raynolds, M.K., Shur, Y. and Walker, D.A. 2015. Landscape,  permafrost, and social change in the Prudhoe Bay region, Alaska: Snapshots from the NSF-ArcSEES project. UAF Institute of Arctic Biology (IAB) Life Sciences Seminar Series. Fairbanks, AK, January 23. (Talk)
    4. Walker, D.A., Buchhorn, M., Kanevskiy, M., Matyshak, G.V., Raynolds, M.K., Shur, Y.L. and Wirth, L.M. 2015. Infrastructure-Thermokarst-Soil-Vegetation Interactions at Lake Colleen Site A, Prudhoe Bay, Alaska. Alaska Geobotany Center Publication, AGC 15-01: 92pp. (PDF)
    5. Walker, D.A., Epstein, H.E., Kumpula, T. and Liebman, M.O. 2015. Yamal LCLUC Synthesis: A synthesis of remote-sensing studies, ground observations and modeling to understand the social-ecological consequences of climate change and resource development on the Yamal Peninsula, Russia and relevance to the circumpolar Arct. AGC Annual Report, 45 pp. (PDF)
  1. 2014

    1. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Bieniek, P.A., Epstein, H.E., Comiso, J.C., Pinzon, J.E., Tucker, C.J., Steele, M.A., Ermold, W. and Zhang, J. 2014. Inter- and intra-annual variability of NDVI and correlations to large-scale circulation patterns, sea ice, snow and cloud cover. ArcticBiomass Workshop. Fairbanks, AK, September 2-3. (Talk)
    2. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Bieniek, P.A., Epstein, H.E., Comiso, J.C., Pinzon, J.E., Tucker, C.J., Steele, M.A., Ermold, W. and Zhang, J. 2014. Changing Seasonality of Tundra Vegetation and Associated Climatic Variables. Abstract Poster Presentation B41E-0103, presented at AGU Fall Meeting. San Francisco, December 15 - 19. (Poster)
    3. Bhatt, U.S., Walker, D.A., Walsh, J.E., Carmack, E.C., Frey, K.E., Meier, W.N., Moore, S.E., Parmentier, F.W., Post, E., Romanovsky, V.E. and Simpson, W.R. 2014. Implications of Arctic Sea Ice Decline for the Earth System. Annual Review of Environment and Resources, Vol. 39: 57-89. (Supplemental Materials) doi:10.1146/annurev-environ-122012-094357. (PDF)
    4. Bobrik, A., Goncharova O., Matyshak G., et al. 2014. Spatial and temporal variability of CO2 efflux of frozen peatland soils at fine scale: the relationship with permafrost conditions and the composition of soil organic matter (Russia, calm site r1). Abstract Poster Presentation 334, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    5. Buchhorn, M. 2014. Ground-based hyperspectral and spectro-directional reflectance characterization of Arctic tundra vegetation communities: field spectroscopy and field spectro-goniometry of Siberian and Alaskan tundra in preparation of the EnMAP satellite mission. Doctoral Thesis, Potsdam, Potsdam Universität. (PDF)
    6. Buchhorn, M., Kanevskiy, M., Matyshak, G., et al. 2014. Effects of 45 years of heavy road traffic on permafrost and tundra along the Spine Road at Prudhoe Bay, Alaska. Abstract Poster Presentation 339, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    7. Dvornikov, Y., Bartsch A., Khomutov, A. et al. 2014. Process of Organic transport in Lakes of the Yamal Region (POLYAR). Abstract Poster Presentation 330, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    8. Epstein H.E. 2014. Biomass, NDVI, and LAI Data and Relationships Across Spatial Scales in Arctic Tundra. ArcticBiomass Workshop. Fairbanks, AK, September 2-3. (Talk)
    9. Epstein, H.E., Bhatt, U.S., Raynolds, M.K, Walker, D.A. and Reichle, L.M. 2014. Recent temporal dynamics of arctic tundra vegetation within the context of spatial biomass-temperature relationships. Abstract Oral Presentation, presented at Arctic Change 2014. Ottawa, ON, December 8-12. (Talk)
    10. Epstein, H.E., Bhatt, U.S., Raynolds, M.K., Walker, D.A., Bieniek, P.A., Tucker C.J., Pinzon, J., Zeng, H., Jia, G.J., Guay, K.C. and Goetz, S.J. 2014. Tundra Greenness. in Arctic Report Card 2014. (Website)
    11. Epstein, H.E., Frost, G.V., Matyshak, G.V., Walker, D.A. and Meakem, V.M. 2014. The influences of land surface properties on soil thermal regimes in the Low Arctic of northwestern Siberia. Abstract Oral Presentation, presented at AGU Fall Meeting. San Francisco, December 15 - 19. (Talk)
    12. Ermokhina, K. 2014. Overview of the West Siberian component of the Arctic Vegetation Archive. Abstract Poster Presentation, presented at Arctic Change 2014. Ottawa, ON, December 8-12. (Talk)
    13. Frost, G.V., Macander, M.J., Liljedahl, A., et al. 2014. Regional patterns of ice-wedge degradation since the mid-20th century across northern Alaska. Abstract Poster Presentation 331, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    14. Kanevskiy, M., Shur, Y., Matyshak, G., et al. 2014. Degradation and recovery of ice wedges in relation to road infrastructure in the Prudhoe Bay Oilfield, AK. Abstract Poster Presentation 337, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    15. Khitun, O., Koroleva, T., Chinenko, S., Petrovsky, V., Zverev, A., Pospelova, E. and Pospelova, I. 2014. Biodiversity research based on local flora approach in Russian Arctic. Abstract Oral Presentation, presented at Arctic Change 2014. Ottawa, ON, December 8-12. (Talk)
    16. Khomutov, A., Leibman, M., Gubarkov, A., Dvornikov, Y., Khitun, O. and Mullanrov, D. 2014. Landslide and permafrost regimes near the Bovanenkovo gas field, Central Yamal, Russia. Abstract Oral Presentation, presented at Arctic Change 2014. Ottawa, ON, December 8-12. (Talk)
    17. Leibman, M.O., Khitun, O.V., Khomutov, A.V., Moskalenko, N.G., Orekhov, P.T., Ponomareva, O.E., Mullanurov, D.R., Gubarkov, A.A., Ermokhina, K.A. 2014. Synthesis of permafrost research along the Eurasia arctic transect. Abstract Poster Presentation 332, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    18. Leibman, M.O., Kizyakov, A.I., Plehanov, A.V., Streletskaya, I.D. and Melnikov, V.P. 2014. Deep crater in Central Yamal, West Siberia, Russia as a new permafrost feature in response to local climate fluctuations. Abstract Oral Presentation, presented at Arctic Change 2014. Ottawa, ON, December 8-12. (Talk)
    19. Raynolds, M. K., Walker, D. A., Ambrosius, K. J., Brown, J., Everett, K. R., Kanevskiy, M., et al. 2014. Cumulative geoecological effects of 62 years of infrastructure and climate change in ice-rich permafrost landscapes, Prudhoe Bay Oilfield, Alaska. Global Change Biology, 20(4):1211-1224. doi:10.1111/gcb.12500.
    20. Raynolds, M.K., Walker, D.A., Buchhorn, M., Wirth, L.M. 2014. Vegetation changes related to 45 years of heavy road traffic along the Spine Road at Prudhoe Bay, Alaska. Abstract Poster Presentation 333, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    21. Raynolds, M.K., Walker, D.A., Epstein, H.E. and Buchhorn, M. 2014. Biomass and NDVI circumpolar relationship. ArcticBiomass Workshop. Fairbanks, AK, September 2-3. (Talk)
    22. Romanovsky, V.E., Cable, W.G., Kholodov, S.S., at al. 2014. Changes in permafrost and active-layer thickness due to climate in the Prudhoe Bay region and North Slope, AK. Abstract Poster Presentation 336, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    23. Verpaelst, M., Fortier, D., Paquette, M. 2014. Mass Movement by Solifluction and Syngenetic Dynamic of Permafrost in the High Arctic, Ward Hunt Island, Canadian High Arctic. Abstract Poster Presentation 329, presented at Arctic Change 2014. Ottawa, ON December 8-12. (Poster)
    24. Walker, D.A, Bhatt, U.S., Muchhorn, M., Comiso, J., Epstein, H.E., Ermokhina, K., Forbes, B., Frost, G., Heim, B., Kofinas, G., Khumotov, A., Kumpula, T., Leiman, M., Matyshak, G., Pinzon, J., Raynolds, M.K., Romanovsky, V., Tucker, C., Wirth, L. and Yu, Q. 2014. SYN-YAMAL: A synthesis of remote-sensing studies, ground observations and modeling to understand the social-ecological consequences of climate change and resource development on the Yamal Peninsula, Russia, and relevance to the circumpolar Arctic. Arctic Change 2014. Ottawa, ON, December 8-12. (Talk)
    25. Walker, D.A. 2014. Arctic Vegetation Sampling: Vegetation sampling, Biomass, NDVI, LAI, Zonal concept, Arctic Vegetation Archive. ArcticBiomass Workshop. Fairbanks, AK, September 2-3. (Talk)
    26. Walker, D.A., Hamilton, T.D., Munger, C. and Maier, H.A. 2014. Glacial history and long-term ecology in the Toolik Lake region. in Hobbie, J. and Kling, G. (eds.) A changing Arctic: Ecological consequence for tundra, streams and lakes. Oxford University Press, Oxford.
    27. Walker, D.A., Raynolds, M.K., Buchhorn, M., Peirce, J.L. (eds.) 2014. Landscape and Permafrost Changes in the Prudhoe Bay Oilfield, Alaska. Alaska Geobotany Center Publication, AGC 14-01: 84pp. (PDF)
    28. Walker, D.A., Raynolds, M.K., Kumpula, T., Shur, Y., Kanevskiy, M.Z., Leibman, M.O., Khomutov, A., Ambrosius, K., Buchhorn, M., Epstein, H.E., Forbes, B.C., Kofinas, G., Maytshak, G.V., Romanovsky, V. and Wirth, L. 2014. Rapid Arctic Transitions in Relation to Infrastructure and Climate Change: Comparison of the Permafrost and Geoecological Conditions in the Bovanenkovo Gas Field, Russia and the Prudhoe Bay Oil Field, Alaska. Abstract Poster Presentation GC31B-0461, presented at AGU Fall Meeting. San Francisco, December 15 - 19. (Poster)
  1. 2013

    1. Bhatt, U., Walker, D., Raynolds, M., Bieniek, P., Epstein, H., Comiso, J., et al. 2013. Recent Declines in Warming and Vegetation Greening Trends over Pan-Arctic Tundra. Remote Sensing, 5(9):4229-4254. doi:10.3390/rs5094229.
    2. Bhatt, U.S., Walker, D.A. Bieniek, P.A. Raynolds, M.K. Epstein, H.E. Comiso, J.C. Pinzon, J. Tucker, C.J. 2013. Links between Pan-Arctic Tundra Vegetation Change and Climate. Seminar at Geophysical Institute, University of Bergen. Bergen, Norway February 20. (Talk)
    3. Bhatt, U.S., Walker, D.A., Bieniek, P.A., Raynolds, M.K., Epstein, H.E., Comiso, J.C., Pinzon, J., Tucker, C.J. 2013. Pan-Arctic Tundra Vegetation Change and it's Links to Climate. Dpto. Biologia Vegetal II, Univ. Complutense. Madrid, Spain February 6. (Talk)
    4. Breen, A., Raynolds, M.K., Hennekens, S.M., Walker, D.A. 2013. Toward an Arctic Alaska Prototype for the Arctic Vegetation Archive. Arctic Vegetation Archive. Krakow, Poland . (Talk)
    5. Bültmann, H., Daniëls, F.J.A. 2013. Greenland Data stored in Münster. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    6. Cherosov, M.M., Matveyeva, N.V., Troeva, E.I., Gogoleva, P.A., Telyatnikov, M.Y., Pestryakova, L.A. 2013. How to use the initiatives of the Russian Government in the field of science for vegetation biodiversity study in the Russian Arctic (propositions of Russian partners). Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    7. Daniëls, F.J.A. 2013. Some reflections on the realization of an international pan-Arctic vegetation classification. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    8. Epstein, H. E., Myers-Smith, I., & Walker, D. A. 2013. Recent dynamics of arctic and sub-arctic vegetation. Environmental Research Letters, 8(1), 015040. doi:10.1088/1748-9326/8/1/015040.
    9. Ermokhina, K. 2013. Yamal and Gydan vegetation datasets. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    10. Fosaa, A.M., Daniëls, F.J.A., Heiðmarsson, S., Jónsdóttir, I.S., Talbot, S.S. 2013. Boreal Tundra Vegetation of the North Atlantic and North Pacific Regions. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    11. Fosaa, A.M., Nilsen, L., Jónsdóttir, I.S. 2013. Scandinavian possibilities. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    12. Frost, G. V., Epstein, H. E., Walker, D. A., Matyshak, G., & Ermokhina, K. 2013. Patterned-ground facilitates shrub expansion in Low Arctic tundra. Environmental Research Letters, 8(1), 015035. doi:10.1088/1748-9326/8/1/015035.
    13. Ickert-Bond, S. 2013. CAFF Flora Group Meeting Summary. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    14. Jiménez-Alfaro, B., Apostolova, I., ?arni, A., Chrytrý, M., Csiky, J., Dengler, J., Dimopoulos, P., Font, X., Golub, V., Hennekens, S.M., Jandt, U., Jansen, F., K?cki, Z., Kevey, B., Krstonosi?, D., Landucci, F., Lysenko, T., Martynenko, V., Mucina, L., Rodwell, J.S., Schaminée, J., Šibík, J., Šilc, U., Sorokin, A., Stan?i?, Z., Willner, W., Yamalov, S. 2013. Towards a European vegetation database and a parameterized overview of European vegetation. Arctic Vegetation Archive. Krakow, Poland . (Talk)
    15. Khitun, O.V., Koroleva, T.M., Chinenko, S.V., Petrovsky, V.V., Zverev, A.A., Pospelova, E., Pospelov, I. 2013. Application of Russian Arctic local flora database concept to the issues of biodiversity conservation. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    16. Koroleva, N. 2013. The tundra zone of Kola Peninsula on the syntaxonomical 'conjunction' in the European Arctic. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    17. Kulyugina, E.E. 2013. Vegetation of the Vasyaha River Basin (Yugorsky Peninsula, Ridge Pay-Khoy) - Case study of vegetation diversity in the European sector of the Russian Arctic. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    18. Lashchinskiy, N. 2013. Spatial vegetation structure of southern tundra from three sectors of Siberian Arctic. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    19. Lee, M.T. 2013. VegBank: A permanent, open-access archive for vegetation plot data. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    20. Lárussen, K., Barry, T., Gill, M. 2013. Thoughts from CAFF regarding the AVA in relationship to the future of Arctic biodiversity monitoring. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    21. Lévesque, E., Boulanger-Lapointe, N., Henry, G.H.R., Mackenzie, W. 2013. Vegetation data available for classification of Canadian Arctic sites. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    22. MacKenzie, W. 2013. A data compilation of Canadian Arctic vegetation releve data and preliminary classification. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    23. Matveyeva, N.V., Cherosov, M.M., Telyatnikov, M.Y. 2013. The Russian Input to the Arctic Vegetation Archive. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    24. McLennan, D. 2013. CHARS and CNVC Support and Operationalization. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    25. Novakovskiy, A. 2013. Approaches to storing and analyzing geobotanical data. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    26. Parmentier, F., Christensen, T. R., & Sørensen, L. L. 2013. The impact of lower sea-ice extent on Arctic greenhouse-gas exchange. Nature Climate Change, 3(3):195-202. doi:10.1038/nclimate1784.
    27. Pellisier, L., Stewart, L. 2013. The AVA as a source for understanding spatial distribution of Arctic biodiversity. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    28. Raynolds, M.K., Breen, A.L., Hennekens, S.M., Walker, D.A., Elven, R., Belland, R., Konstantinova, N.A., Kristinsson, H. 2013. The Pan-Arctic Species List (PASL). Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    29. Razzhivin, V.Y. 2013. Vegetation Datasets for Chukotka. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    30. Schaepman-Strub, G., Iturrate, M., Furrer, R. 2013. Towards assessing biodiversity feedbacks to climate in the Arctic … and potential future applications of the AVA. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    31. Telyatnikov, M.Y., Troeva, E.I., Cherosov, M.M., Pristyazhnyuk, S.A., Gogoleva, P.A., Pestryakova, L.A. 2013. Plant communities of southern hypoarctic tundra of the Anabar River basin (North-West Yakutia). Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    32. Thannheiser, D. 2013. Phytosociology of Spitsbergen. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    33. Thannheiser, D. 2013. Phytosociology of Western Canadian Arctic. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    34. Walker, D.A. 2013. International Arctic Vegetation Database. IASC Terrestrial Working Group Meeting. Krakow, Poland 13 April. (Talk)
    35. Walker, D.A. 2013. Concluding Day. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    36. Walker, D.A. 2013. The Arctic Vegetation Archive Workshop, 14-16 April 2013, Kraków, Poland: Welcome and Agenda. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    37. Walker, D.A. 2013. Fred Daniëls key role through 21 years of History of the AVA. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    38. Walker, D.A. 2013. The Arctic Vegetation Archive (AVA). Arctic Science Summit Week. Krakow, Poland 13-19 April. (Talk)
    39. Walker, D.A. 2013. Recovery and archiving of key Arctic Alaska vegetation map and plot data for long-term vegetation analyses: A proposal to NASA for data recovery for the Arctic-Boreal Vulnerability Experiment (Pre-ABoVE). Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    40. Walker, D.A. 2013. Arctic Vegetation Archive: History and goals for the workshop. Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
    41. Walker, D.A., Bay, C., Breen, A.L., Bültmann, H., Christiansen, T., Damgaard, C., Daniëls, F.J.A., Hennekens, S.M., Luoto, M., Pellisier, L., Peet, R.K., Schmidt, N.-M., Yoccoz, N.G., Wisz, M.S. 2013. Rescuing valuable Arctic vegetation data for biodiversity and ecosystem models: CBIO-NET—IAVD workshop, Roskilde, Denmark, 29-31 May 2012. Arctic, 68(1):133-138. (PDF)
    42. Walker, D.A., Bhatt, U.S., Buchhorn, M., Epstein, H.E., Forbes, B.C., Heim, B., Liebman, M.O., Raynolds, M.K., Frost, G.V. and Yu, Q. 2013. Adaptation to rapid land-use and climate changes on the Yamal Peninsula, Russia: Remote sensing and models for analyzing cumulative effects. AGC Annual Report, 34 pp. (PDF)
    43. Walker, M.D. 2013. 21 years to common ground: An extremely short talk about a long time (in human years) and a short time (in earth years). Arctic Vegetation Archive. Krakow, Poland 14-16 April. (Talk)
  1. 2012

    1. Bhatt, U.S. 2012. Collaborative Research: Seasonality of circumpolar tundra - ocean and atmosphere controls and effects on energy and carbon budgets. AGC Final Report. (PDF)
    2. Bhatt, U.S., Walker, D.A., Bieniek, P.A., Raynolds, M.K., Epstein, H.E., Comiso, J.C., Pinzon, J., Tucker, C.J. 2012. Drivers of Recent Pan-Arctic Tundra Vegetation Variability and Change. IPY 2012 From Knowledge to Action. Montreal, Quebec April 22-27. (Talk)
    3. Bieniek, P.A. 2012. Assessing River Ice Breakup Date, Coastal Tundra Vegetation and Climate Divisions in the Context of Alaska Climate Variability. Ph.D. Thesis, University of Alaska Fairbanks, 140.
    4. Bieniek, P.A., Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Pinzon, J.C., Comton, J.T., Thoman, R.L., Tran, H., Molders, N., Ermold, W., Zhang, J., Steele, M. 2012. Alaska Coastal Tundra Vegetation's Links to Climate. AGU Fall Meeting. San Francisco, CA December 3-7. (Talk)
    5. Epstein, H.E., Raynolds, M.K., Walker, D.A., Bhatt, U.S., Tucker, C.J., Pinzon, J.E. 2012. Dynamics of aboveground phytomass of the circumpolar arctic tundra during the past three decades. Environmental Research Letters, 7(1):12. doi:10.1088/1748-9326/7/1/015506. (PDF)
    6. Epstein, H.E., Raynolds, M.K., Walker, D.A., Bhatt, U.S., Tucker, C.J., Pinzon, J.E., Frost, G.V., Yu, Q., Jia, G.J., Zeng, H. 2012. Recent dynamics of arctic tundra vegetation: Remote sensing, field observations, and modeling. IPY 2012 From Knowledge to Action. Montreal, Quebec April 22-27. (Talk)
    7. Epstein, H.E., Yu, Q., Frost, G.V., Raynolds, M.K., Walker, D.A., Bhatt, U.S., Tucker, C.J., Pinzon, J.E. 2012. Climate and grazing influences on circumpolar dynamics of arctic tundra vegetation. 12th International Circumpolar Remote Sensing Symposium. Levi, Finland May 14-18. (Talk)
    8. Ermokhina, K. 2012. Phytoindication of Landslide Disturbances in the Central Yamal. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    9. Fauria, M.M., Forbes, B.C., Zetterberg, P., Kumpula, T. 2012. Eurasian Arctic greening reveals teleconnections and the potential for novel ecosystems. Nature Climate Change. doi:10.1038/nclimate1558.
    10. Forbes, B.C. 2012. Summary of the Finnish contribution to the LCLUC project. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    11. Frost, G.V. Epstein, H.E. Walker, D.A. Matyshak, G.V. Ermokhina, K.A. 2012. The 2011 Expedition to Kharp, Southern Yamal Peninsula Region, Russia. AGC Data Report, 83 pp. (PDF)
    12. Frost, G.V., Epstein, H.E., Matyshak, G., Ermokhina, K., Walker, D.A. 2012. Summary of Kharp field expedition, July 2011. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    13. Frost, G.V., Epstein, H.E., Walker, D.A. 2012. Widespread expansion of boreal shrublands in the Siberian Low Arctic since the 1960s. Abstract CC31A-0965, Wednesday Dec. 5, session GC31A, presented at AGU Fall Meeting. San Francisco, CA December 3-7. (Poster)
    14. Frost, G.V., Epstein, H.E., Walker, D.A., Matyshak, G., Ermokhina, K. 2012. Feedbacks between shrubland development and permafrost in the northwest Siberian Low Arctic. 12th International Circumpolar Remote Sensing Symposium. Levi, Finland May 14-18. (Talk)
    15. Frost, G.V., Epstein, H.E., Walker, D.A., Matyshak, G., Ermokhina, K. 2012. Feedbacks between shrubland development and permafrost in the northwest Siberian Low Arctic. IPY 2012 From Knowledge to Action. Montreal, Quebec April 22-27. (Talk)
    16. Frost, G.V., Epstein, H.E., Walker, D.A., Yu, Q. 2012. Expansion and patch dynamics of alder shrublands in the Siberian Low Arctic: evidence from remote-sensing spanning the Space Age. 12th International Circumpolar Remote Sensing Symposium. Levi, Finland May 14-18. (Poster)
    17. Heim, B., Bartsch, A., Buchhorn, M. 2012. I. SATELLITE-BASED PRODUCTS, EVALUATION - II. Up-Scaling, Calibration and Experiments-Yamal. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    18. Heim, B., Bartsch, A., Elger, K., Permafrost Team, E.D. 2012. Circum-Arctic Satellite-Based Service. 12th International Circumpolar Remote Sensing Symposium. Levi, Finland May 14-18. (Talk)
    19. Heim, B., Buchhorn, M., Hubberton, H.-W. 2012. Yamal 2011 Expedition. Alfred Wegener Institute for Polar and Marine Research (AWI) Publication, 14 pp. (PDF)
    20. Kelley, A.M., Epstein, H.E., Ping, C.-L., Walker, D.A. 2012. Soil nitrogen transformations associated with small patterned-ground features along a North American Arctic transect. Permafrost and Periglacial Processes, 23:196-206. doi:10.1002/ppp.1748. (PDF)
    21. Khomutov, A. 2012. Mapping of Active Layer Depths Using Correlation between Active Layer Depth and Vegetation Parameters on Central Yamal, Russia. From Knowledge to Action, 2012 IPY Conference. Montreal, Quebec May 22-27. (Poster)
    22. Khomutov, A., Leibman, M.O., Moskalenko, N., Orekhov, P., Mullanurov, D. 2012. Database of EAT permafrost information. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    23. Kumpula, T., Forbes, B.C., Stammler, F., Meschtyb, N. 2012. Dynamics of a Coupled System: Multi-Resolution Remote Sensing in Assessing Social-Ecological Responses during 25 Years of Gas Field Development in Arctic Russia. Remote Sensing: Human-Induced Global Change, 4(4):1046-1068. doi:10.3390/rs4041046. (PDF)
    24. Kumpula, T., Forbes, B.C., Stammler, F., Meschtyb, N. 2012. Remote sensing and gis analysis of anthropogenic and natural land use and land cover changes in tundra environments in Bovanenkovo gas field on Yamal Peninsula, Russia.. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    25. Leibman, M.O., Gubarkov, A.A., Khitun, O.V., Khomutov, A.V., Moskalenko, N.G., Orekhov, P.T. 2012. Summary of the Russian contribution to the LCLUC project. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    26. Leibman, M.O., Khitun, O.V., Khomutov, A.V., Moskalenko, N.G., Orekhov, P.T. 2012. Active layer and permafrost boreholes along the Yamal transect. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    27. Macander, M.J., Raynolds, M.K., Frost, G.V., Winterstein, M.A. 2012. Assessment of snow regime patterns and vegetation greenness trends in northern Alaska using Landsat time-series data,1985–2011. Abstract GC21A-0941, Tuesday, December 4, session GC21A, presented at AGU Fall Meeting. San Francisco, CA December 3-7. (Poster)
    28. Masson-Delmotte, V., Swingedouw, D., Landais, A., Siedenkrantz, M.-S., Gauthier, E., Bichet, V., Massa, C., Perren, B., Jomelli, V., Adalgeirsdottir, G., Christensen, J., Arneborg, J., Bhatt, U.S., Walker, D.A., Elberling, B., Gillet-Chaulet, F., Ritz, C., Gallee, H., van den Broeke, M., Fettweis, X., de Vernal, A. 2012. Greenland climate change: from the past to the future. Climate Change, draft:(unk):45. doi:10.1002/wcc.186. (PDF)
    29. Matyshak, G.V. 2012. Soils investigations along the EAT. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    30. Michaelson, G.J., Ping, C.-L., Walker, D.A. 2012. Soils associated with biotic activity on frost boils in Arctic Alaska. Soil Science Society of America Journal, 76:2265. (PDF)
    31. Orekhov, P., Leibman, M.O. 2012. General Environment and Climate of the EAT. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    32. Raynolds, M.K., Walker, D.A., Epstein, H.E., Pinzon, J.E., Tucker, C.J. 2012. A new estimate of tundra-biome phytomass from trans-Arctic field data and AVHRR NDVI. Remote Sensing Letters, 3:403-411. doi:10.1080/01431161.2011.609188. (PDF)
    33. Raynolds, M.K., Walker, D.A., Kofinas, G.P., Ambrosius, K. 2012. 60 years of landscape change within an arctic oilfield, Prudhoe Bay, Alaska. 12th International Circumpolar Remote Sensing Symposium. Levi, Finland, May 14-18. (Poster)
    34. Raynolds, M.K., Walker, D.A., Kofinas, G.P., Ambrosius, K.J. 2012. 60 Years of Landscape Change within an Arctic Oilfield, Prudhoe Bay, Alaska. 12th Circumpolar Remote Sensing Symposium. Levi, Finland 14-18 May. (Poster)
    35. Raynolds, M.K., Walker, D.A., Kofinas, G.P., Ambrosius, K.J. 2012. Sixty years of landscape change within an Artic Oilfield, Prudhoe Bay, Alaska. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    36. Raynolds, M.K., Walker, D.A., Verbyla, D., Munger, C.A. 2012. Patterns of change within a tundra landscape: 22-year Landsat NDVI trends in an area of the northern foothills of the Brooks Range, Alaska. Arctic, Antarctic, and Alpine Research.
    37. Strauss, J., Ulrich, M., Buchhorn, M. 2012. Expeditions to permafrost 2012 : "Alaskan North Slope/Itkillik", "Thermokarst in Central Yakutia", "EyeSight-NAAT-Alaska". Reports on Polar and Marine Research, 65 pp. doi:net/10013/epic.40371. (PDF)
    38. Timling, I., Walker, D.A., Gardes, M., Charcosset, J.Y., Welker, J.A., Taylor, D.L. 2012. Distribution and drivers of ectomycorrhizal fungal communities across the North American Arctic. Ecosphere, 3:1-25. (PDF)
    39. Ukraintseva, N.G., Korobova, T.A. 2012. Summary of willow studies in the Bovanenkovo region. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    40. Walker, D.A. 2012. Summary of the IPY Greening of the Arctic Project. Institute of Arctic Biology Seminar. Fairbanks, AK April 6. (Talk)
    41. Walker, D.A. 2012. Summary of the Greening of the Arctic Project. Third Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland May 19-20. (Talk)
    42. Walker, D.A., Bhatt, U.S., Epstein, H.E., Bieniek, P.A., Comiso, J.C., Frost, G.V., Pinzon, J., Raynolds, M.K., Tucker, C.J. 2012. Changing Arctic tundra vegetation biomass and greenness [in State of the Climate in 2011]. Bulletin of the American Meteorological Society, 93(7):S138-139. (State of the Climate in 2011) (PDF)
    43. Walker, D.A., Epstein, H.E., Bhatt, U.S., Leibman, M.O., Forbes, B.C., Romanovsky, V.E., Kofinas, G., Kumpula, T., Raynolds, M.K., Frost, G.V., Yu, Q., Bieniek, P.A., Orekhov, P., Matyshak, G., Moskalenko, N., Ukraientseva, N., Khumotov, A., Ermokhina, K., Drozdov, D., Comiso, J.C., Pinzon, J., Tucker, C.J., Meschtyb, N., Stammler, F., Khitun, O.V. 2012. Greening of the Arctic Project (IPY-GOA, project ID 569). From Knowledge to Action, 2012 IPY Conference. Montreal, Quebec May 22-27. (Poster)
    44. Walker, D.A., Epstein, H.E., Bhatt, U.S., Leibman, M.O., Forbes, B.C., Romanovsky, V.E., Kofinas, G., Kumpula, T., Raynolds, M.K., Frost, G.V., Yu, Q., Bieniek, P.A., Orekhov, P., Matyshak, G., Moskalenko, N., Ukraientseva, N., Khumotov, A., Ermokina, K., Comiso, J.C., Pinzon, J., Tucker, C.J., Meschtyb, N., Stammler, F. 2012. A hierarchical analysis of land-cover and land-use change in tundra environments: Remote sensing, ground-based observations of social and ecological factors, and models. 2012 NASA LCLUC Science Team meeting. Rockville, MD 3-5 April. (Poster)
    45. Walker, D.A., Epstein, H.E., Raynolds, M.K., Kuss, P., Kopecky, M.A., Frost, G.V., Daniëls, F.J.A., Leibman, M.O., Moskalenko, N.G., Matyshak, G.V., Khitun, O.V., Khomutov, A.V., Forbes, B.C., Bhatt, U.S., Kade, A.N., Vonlanthen, C.M., Tichy, L. 2012. Environment, vegetation and greenness (NDVI) along the North America and Eurasia Arctic transects. Environmental Research Letters, 7(1). (Environmental Research Letters) doi:10.1088/1748-9326/7/1/015504. (PDF)
    46. Walker, D.A., Matyshak, G., Frost, G.V., Zhurbenko, M., Afonina, O. 2012. High cover, biomass, and NDVI of biological soil crusts on Hayes Island, Franz Josef Land, Russia. Tenth International Conference on Permafrost. Salekhard, Russia June 25-29. (Poster)
    47. Walker, D.A., Raynolds, M.K., Breen, A., Daniëls, F.J.A., Talbot, S.S., Hennekens, S.M., Peet, R.K., Murray, D.F., Walker, M.D. 2012. An International Arctic Vegetation Database. International Arctic Vegetation Database Workshop. Roskilde, Denmark May 29-31. (Talk)
    48. Walker, D.A., Webber, P.J., Brown, J., Raynolds, M.K., Streever, W., Ambrosius, K. 2012. The evolution of the Integrated Geobotanical and Historical Change Mapping (IGHCM) approach for documenting landscape change (1949-2010), Prudhoe Bay oil field, AK, USA. 12th International Circumpolar Remote Sensing Symposium. Levi, Finland May 14-18. (Talk)
    49. Wilson, J.B., Chiarucci, A., Chytrý, M., Pärtel, M. 2012. Editors' Award, vegetation survey, remote sensing and restoration. Applied Vegetation Science, 15:(1-3). doi:10.1111/j.1654-109X.2011.01170.x. (PDF)
    50. Yu, Q., Epstein, H.E., Walker, D.A., Forbes, B.C. 2012. Dynamics of Circum-Arctic Tundra Plant Communities in Response to Climate Warming and Grazing Pressure. IPY 2012 From Knowledge to Action. Montreal, Canada April 22-27. (Talk)
  1. 2011

    1. Bhatt, U.S. 2011. The role of seasonality and large-scale climate drivers in recent Pan-Arctic tundra vegetation variability and change. Abstract GC51F-1075, Friday, Dec. 9, session GC51F, presented at AGU Fall Meeting. San Francisco, CA, December 5-9. (Poster)
    2. Bhatt, U.S. 2011. Collaborative Research: Seasonality of circumpolar tundra - ocean and atmosphere controls and effects on energy and carbon budgets. AGC Annual Report. (PDF)
    3. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Bieniek, P.A., Epstein, H.E., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2011. Understanding Recent Arctic Tundra Vegetation Changes. World Climate Research Programme Open Science Conference. Denver, CO October 24. (Poster)
    4. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Bieniek, P.A., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2011. Seasonal changes of the ice-ocean-atmosphere-terrestrial system on the Yamal. LCLUC Science Team Meeting. Adelphi, MD March 28-30. (Poster)
    5. Bieniek, P.A., Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C. 2011. Impacts of Changing Seasonality on Arctic Systems and an Arctic in Rapid Transition II. Abstract GC32A-04, Wednesday, Dec. 7, session GC32A, presented at AGU Fall Meeting. San Francisco, CA, December 5-9. (Talk)
    6. Blinnikov, M.S., Gaglioti, B., Walker, D.A., Wooler, M.J., Zazula, G.D. 2011. Pleistocene graminoid-dominated ecosystems in the Arctic. Quaternary Science Reviews, 30:2906-2929. doi:10.1016/j.quascirev.2011.07.002. (PDF)
    7. Epstein, H.E., Yu, Q., Frost, G.V., Raynolds, M.K., Walker, D.A., Forbes, B.C. 2011. Effects of climate, grazing, and gas development on tundra ecosystems of the Yamal Peninsula, northwestern Siberia. LCLUC Science Team Meeting. Adelphi, MD . (Poster)
    8. Frost, G.V., Epstein, H.E., Walker, D.A., Matyshak, G., Ermokhina, K. 2011. Tall shrub expansion facilitated by patterned ground in the northwest Siberian Low Arctic. Abstract GC51F-1058, Friday, Dec. 9, session GC51F, presented at AGU Fall Meeting. San Francisco, CA, December 5-9. (Poster)
    9. Goetz, S.J., Epstein, H.E., Alcaraz, J.D., Beck, P.S.A., Bhatt, U.S., Bunn, A., Comiso, J.C., Jia, G.J., Kaplan, J.O., Lilschke, H., Lloyd, A., Walker, D.A., Yu, Q. 2011. Recent changes in Arctic vegetation: Satellite observations and simulation model predictions. in G. Gutman, A. Reissell (eds.) Eurasian Arctic Land Cover and Land Use in a Changing Climate. Springer. New York. VI pp. 9-36. (PDF)
    10. Khitun, O.V., Ermokhina, K.A., Leibman, M.O., Khomutov, A.V. 2011. Plant species indicating the depth of active layer on the Bely Island. Fourth Russian Conference on Geocryology. Moscow, Russia, June 7-9. (Talk)
    11. Kumpula, T., Pajunen, A., Kaarlejärvi, E., Forbes, B.C., Stammler, F. 2011. Land use and land cover change in Arctic Russia: Ecological and social implications of industrial development. Global Environ. Change. doi:10.1016/j.gloenvcha.2010.12.010. (PDF)
    12. Leibman, M.O., Moskalenko, N.G., Orekov, P.T., Khomutov, A.V., Walker, D.A., Epstein, H.E. 2011. Interaction of cryogenic and biotic components in cryolithozone of the West Siberia along the Yamal transect. in (eds.) Polar cryosphere and hydrosphere of the Land. 3.
    13. Raynolds, M.K. 2011. Searching for the response of northern vegetation to climate change. Iceland Institute of Natural History. Akureyri, Iceland 6 April. (Talk)
    14. Raynolds, M.K. 2011. Searching for the response of northern vegetation to climate change. University of Akureyri. Akureyri, Iceland 28 April. (Talk)
    15. Stevens, D.S.P., Jorgensen, M.T., Walker, D.A., Brown, J. 2011. Permafrost Information Enhanced by New Guide Books from the Ninth International Conference on Permafrost. 2011 Association of American Geographers Annual Meeting. Seattle, WA April 12-16. (Poster)
    16. Talbot, S.S., Baldwin, K.A., Jorgensen, M.T., MacKenzie, W., Meades, W.J., Meidinger, D., Robitaille, A., Saucier, J.P., Selkowitz, D., Walker, D.A. 2011. Progress toward a circumboreal vegetation map (CBVM) emphasizing boreal North America. European Vegetation Survey 20th Workshop. Rome, Italy April 6-9.
    17. Walker, D.A. 2011. Biocomplexity of small patterned-ground features. Arctic Ecology Course. Masaryk University, Brno, Czech Republic March 8. (PPT) (PDF)
    18. Walker, D.A. 2011. Arctic vegetation along two long bioclimatic transects in North America and Russia. Fulbright Lecture, Botany Dept., Masarysk University. Brno, Czech Republic March 10. (Talk)
    19. Walker, D.A. 2011. Greening of the Arctic: Climate change and circumpolar Arctic vegetation. Fulbright Lecture, Cesko Budovice University. Cesko Budovice, Czech Republic April 27. (Talk)
    20. Walker, D.A. 2011. Socio-ecological effects of oil and gas development in the Arctic: Comparison of the Prudhoe Bay, Alaska and Bovanenkova, Russia regions. Earth Day, 20th Celebration of the Czech Fulbright Commission. American Center, Prague, Czech Republic April 21. (Talk)
    21. Walker, D.A. 2011. Welcome to IASC. Understanding Biodiversity Changes and Causes - Synergies in Arctic Terrestrial Biodiversity Research and Monitoring. Sonnerupgaard Gods, Hvalsø, Denmark 12 October. (Talk)
    22. Walker, D.A. 2011. Multi-scale monitoring of Arctic vegetation. Terrestrial Expert Monitoring Group Inaugural Workshop. Sonnerupgaard Gods, Hvalsø, Denmark 10-14 October. (Talk)
    23. Walker, D.A., Bhatt, U.S., Breen, A.L., Callaghan, T.V., Daniëls, F.J.A., Elvebakk, A., Epstein, H., Forbes, B., Gould, W.A., Jia, G.J., Khitun, O.V., Lantz, T.C., Matveyeva, N., Moskalenko, N., Munger, C.A., Raynolds, M.K., Talbot, S.S., Tape, K.D., Tweedie, C.E., Walker, M.D., Webber, P.J. 2011. Arctic vegetation structure. in (eds.) Arctic Biodiversity Assessment. Conservation of Arctic Flora and Fauna. Akureyri, Iceland..
    24. Walker, D.A., Bhatt, U.S., Callaghan, T.V., Comiso, J.C., Epstein, H.E., Forbes, B.C., Gill, M., Gould, W.A., Henry, G.H.R., Jia, G.J., Kokelj, S.V., Lantz, T.C., Oberbauer, S.F., Pinzon, J.E., Raynolds, M.K., Shaver, G.R., Tucker, C.J., Tweedie, C.E., Webber, P.J. 2011. The Arctic: Land: Vegetation. [In: State of the Climate in 2010]. Bulletin of the American Meteorological Society, 92:S150-S152. (State of the Climate in 2010)
    25. Walker, D.A., Bhatt, U.S., Callaghan, T.V., Comiso, J.C., Epstein, H.E., Forbes, B.C., Gill, M., Gould, W.A., Henry, G.H.R., Jia, G.J., Kokelj, S.V., Lantz, T.C., Oberbauer, S.F., Pinzon, J.E., Raynolds, M.K., Shaver, G.R., Tucker, C.J., Tweedie, C.E., Webber, P.J. 2011. Vegetation. in Richter-Menge, J., Jeffries, M.O., Overland, J.E. (eds.) Arctic Report Card 2011. NOAA. pp. 8. (Website) (PDF)
    26. Walker, D.A., Bhatt, U.S., Raynolds, M.K., Bieniek, P.A., Epstein, H.E., Frost, G.V., Leibman, M.O., Forbes, B.C., Comiso, J.C., Tucker, C.J., Pinzon, J. 2011. Satellite and land-based observations of environment, vegetation and NDVI along two Arctic Transects: Partial results from the IPY Greening of the Arctic Project. Abstract GC51F-1072, Friday, Dec. 9, session GC51F, presented at AGU Fall Meeting. San Francisco, CA, December 5-9. (Poster)
    27. Walker, D.A., Bienek, P., Bhatt, U.S., Raynolds, M.K., Epstein, H.E., Jia, G.J., Comiso, J.C., Tucker, C.J., Pinzon, J., Liebman, M.O., Forbes, B.C., Kumpula, T. 2011. The Arctic Tundra is a maritime biome. High latitude trace gas exchanges: the role of ocean-land interactions. Nuuk, Greenland September 19-22. (Talk)
    28. Walker, D.A., Carlson, S., Frost, G.V., Matyshak, G.V., Leibman, M.E., Orechov, P., Khomutov, A.V., Khitun, O., Zhurbenko, M.P., Afonina, O., Barbour, E.M. 2011. 2010 Expedition to Krenkel Station, Hayes Island, Franz Josef Land Russia. AGC Data Report. (PDF)
    29. Walker, D.A., Forbes, B.C., Leibman, M.O., Epstein, H.E., Bhatt, U.S., Comiso, J.C., Drozdov, D.S., Gubarkov, A.A., Jia, G.J., Karlejaärvi, E., Kaplan, J.O., Khumutov, V., Kofinas, G.P., Kumpula, T., Kuss, P., Moskalenko, N.G., Raynolds, M.K., Romanovsky, V.E., Stammler, F., Yu, Q. 2011. Cumulative effects of rapid land-cover and land-use changes on the Yamal Peninsula, Russia. in Gutman, G., Reissel, A. (eds.) Eurasian Arctic Land Cover and Land Use in a Changing Climate. Springer. New York. VI pp. 206-236. doi:10.1007/978-90-481-9118-5_9. (PDF)
    30. Walker, D.A., Kuss, H.P., Epstein, H.E., Kade, A.N., Vonlanthen, C., Raynolds, M.K., Daniëls, F.J.A. 2011. Vegetation of zonal patterned-ground ecosystems along the North American Arctic Transect. Applied Vegetation Science, 14:440-463. (PDF)
    31. Walker, D.A., Kuss, H.P., Kopecky, M., Frost, G.V., Daniëls, F.J.A., Kade, A.N., Vonlanthen, C.M., Raynolds, M.K., Epstein, H.E. 2011. The North American and Eurasia Arctic transects: Using phytosociology and remote sensing to detect vegetation pattern and change. European Vegetation Survey 20th Workshop. Rome, Italy April 6-9. (Talk)
    32. Walker, D.A., Maier, H.A., Barbour, E.M., Raynolds, M.K. 2011. Final Report for A web-based multi-scale Arctic Geobotanical Atlas (AGA) for the Toolik Lake Field Station, Arctic Alaska, and the Circumpolar Region. AGC Final Report. , 13. (PDF)
    33. Walker, D.A., Raynolds, M.K. 2011. An International Arctic Vegetation Database: A foundation for panarctic biodiversity studies. CAFF Strategy Series Report nr. 5. , 29. (PDF)
    34. Walker, D.A., Raynolds, M.K., Epstein, H.E., Bhatt, U.S., Frost, G.V., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2011. Greening of the Arctic: Spatial variation of biomass and NDVI along two Arctic transects and the Circumpolar Arctic. LCLUC Science Team Meeting. Adelphi, MD March 28-30. (Poster)
    35. Yu, Q. 2011. Modeling dynamics of circum-arctic tundra plant communities in response to climate warming and grazing pressure. Abstract GC41C-0831, Friday, Dec. 9, session GC51F, presented at AGU Fall Meeting. San Francisco, cA, December 5-9. (Poster)
    36. Yu, Q., Epstein, H.E., Walker, D.A. 2011. Modeling dynamics of tundra plant communities on the Yamal Peninsula. LCLUC Science Team Meeting. Adelphi, MD March 28-30. (Poster)
    37. Yu, Q., Epstein, H.E., Walker, D.A., Frost, G.V., Forbes, B. 2011. Modeling dynamics of tundra plant communities on the Yamal Peninsula, Russia, in response to climate change and grazing pressure. Environmental Research Letters, 6(4). (Environmental Research Letters) doi:10.1088/1748-9326/6/4/045505. (PDF)
  1. 2010

    1. Alcaraz, J.D., Cabello, J., Epstein, H.E., Jia, G.J. 2010. Trends in the surface vegetation dynamics of the tundra and taiga network of protected areas in Eurasia as observed by satellite sensors. in prep..
    2. Bhatt, U.S. 2010. Collaborative Research: Seasonality of circumpolar tundra - ocean and atmosphere controls and effects on energy and carbon budgets. AGC Annual Report, 5 pp. (PDF)
    3. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Bieniek, P.A., Epstein, H.E., Comiso, J.C., Pinzon, J.E., Tucker, C.J., Polyakov, I.V., Liu, Y., Gens, R., Tweedie, C.E., Webber, P.J., Steele, M., Jia, G.J. 2010. Understanding drivers of recent Arctic tundra vegetation changes. Abstract GC43B-08, presented at AGU Fall Meeting. San Francisco, CA, 13-17 December. (Talk)
    4. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Jia, G.J., Gens, R., Pinzon, J., Tucker, C., Tweedie, C., Webber, P. 2010. Circumpolar Arctic tundra vegetation change is linked to sea-ice decline. State of the Arctic Meeting. Miami, Fl March 16-19. (Talk)
    5. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Jia, G.J., Gens, R., Pinzon, J.E., Tucker, C.J., Tweedie, C.E., Webber, P.J. 2010. Circumpolar Arctic tundra vegetation change is linked to sea-ice decline. Earth Interactions, 14:(8):1-20. (PDF)
    6. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J. 2010. Seasonality of the atmosphere-ocean-ice-terrestrial environment of Arctic tundra. State of the Arctic Meeting. Miami, FL March 16-19. (Poster)
    7. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2010. Climatology and Seasonality of the ice-ocean-atmosphere-terrestrial system on the Yamal. Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    8. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2010. Circumpolar arctic tundra vegetation change is linked to sea-ice decline. Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    9. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2010. Climatology and variability of the ice-ocean-atmosphere-terrestrial system on the Yamal. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Poster)
    10. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Steele, M., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2010. Circumpolar arctic tundra vegetation change is linked to sea-ice decline. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Talk)
    11. Bieniek, P.A., Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Gens, R., Pinzon, J.E., Tucker, C.J., Steele, M., Ozimek, C. 2010. Alaska tundra vegetation trends and their links to the large-scale climate. Abstract GC43B-0976, presented at AGU Fall Meeting. San Francisco, CA, 13-17 December. (Poster)
    12. Comiso, J.C. 2010. State of the Cryosphere in the Arctic. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    13. Drozdov, D.S., Grechichshev, S.E., Malkova, G.V., Korostelev, Y.V. 2010. Yamal Peninsula maps and GIS information. Update on ECI activities and permafrost research on the Yamal. Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland 8-10 March 2010. (Talk)
    14. Epstein, H.E., Walker, D.A., Raynolds, M.K., Kelley, A.M., Jia, G.J., Ping, C.L. 2010. Vegetation biomass, leaf area index, and NDVI patterns and relationships along two latitudinal transects in arctic tundra. IPY Oslo Science Conference. Oslo, Norway 8-12 Jun. (Talk)
    15. Epstein, H.E., Walker, D.A., Raynolds, M.K., Kelley, A.M., Jia, G.J., Ping, C.L., Michaelson, G., Leibman, M.O., Kaarlejärvi, E., Khomutov, A.V., Kuss, H.P., Moskalenko, N.G., Orechov, P., Matyshak, G., Forbes, B.C., Yu, Q. 2010. Vegetation biomass, leaf area index, and NDVI patterns and relationships along two latitudinal transects in arctic tundra. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 20-22 April. (Poster)
    16. Epstein, H.E., Walker, D.A., Raynolds, M.K., Kelley, A.M., Jia, G.J., Ping, C.L., Michaelson, G.J., Leibman, M.O., Kaarlejärvi, E., Khomutov, A.V., Kuss, H.P., Moskalenko, N.G., Orechov, P., Matyshak, G., Forbes, B.C. 2010. Vegetation biomass, leaf area index, and NDVI patterns and relationships along two latitudinal transects in arctic tundra. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Talk)
    17. Epstein, H.E., Walker, D.A., Raynolds, M.K., Kelley, A.M., Jia, G.J., Ping, C.L., Michaelson, G.J., Leibman, M.O., Kaarlejärvi, E., Khomutov, A.V., Kuss, P., Moskalenko, N.G., Orechov, P., Matyshak, G., Forbes, B.C. 2010. Vegetation biomass, leaf area index, and NDVI patterns and relationships along two latitudinal transects in Arctic tundra. State of the Arctic Meeting. Miami, FL 16-19 March. (Talk)
    18. Forbes, B.C., Fauria, M.M., Zetterberg, P. 2010. Russian Arctic Warming and 'Greening' are Closely Tracked by Tundra Shrub Willows. State of the Arctic Conference. Miami, FL March 16-19. (Poster)
    19. Forbes, B.C., Fauria, M.M., Zetterberg, P. 2010. Russian Arctic warming and 'greening' are closely tracked by tundra shrub willows. Global Change Biology, 1542-1554:1542-1554. (PDF)
    20. Forbes, B.C., Fauria, M.M., Zetterberg, P., Kumpula, T. 2010. Deciduous shrub growth and the greening of the Arctic in West Siberia. Abstract GC53B-08, presented at AGU Fall Meeting. San Francisco, CA, 13-17 December. (Talk)
    21. Forbes, B.C., Murray, M.S., Walker, D.A. 2010. Human dimensions of land-cover and land-use change in the Arctic with a focus on the Yamal Peninsula, Russia. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Talk)
    22. Forbes, B.C., Stammler, F., Kumpula, T., Meschtyb, N., Pajunen, A., Kaarlejärvi, E. 2010. High resilience in the Yamal-Nenets social-ecological System, west Siberian Arctic, Russia. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    23. Frost, G.V., Epstein, H.E., Walker, D.A. 2010. Spatio-temporal dynamics in tree and tall shrub cover near Kharp, northwest Siberia: 2009 field observations and proposed 2010 study plan. Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    24. Frost, G.V., Epstein, H.E., Walker, D.A. 2010. Summary of 2009 field observations and proposed 2010 study plan for Kharp study site, northwest Siberia. Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Talk)
    25. Frost, G.V., Epstein, H.E., Walker, D.A. 2010. Spatio-temporal trends in tree and shrub cover in the circumpolar Low Arctic: Evidence from 1960s satellite photography and ground observations. State of the Arctic Meeting. Miami, FL March 16-19. (Poster)
    26. Frost, G.V., Epstein, H.E., Walker, D.A. 2010. Spatio-temporal dynamics in tree and tall shrub cover near Kharp, northwest Siberia. Land Cover, Land Use Change Spring Science Team Meeting Bethesda, MD April 20-22. (Poster)
    27. Frost, G.V., Epstein, H.E., Walker, D.A., Yu, Q., Raynolds, M.K. 2010. Spatio-temporal trends in vegetation structure and NDVI in Low Arctic northwest Siberia: evidence from the satellite record and ground observations. Abstract GC54A-03, presented at AGU Fall Meeting. San Francisco, CA, 13-17 December. (Talk)
    28. Frost, G.V., Walker, D.A., Raynolds, M.K., Epstein, H.E. 2010. Ordination and gradient analysis of Yamal Peninsula releve data. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 8-10. (Poster)
    29. Gould, W.A., Gonzalez, G., Walker, D.A., Ping, C.L. 2010. Commentary. Integrating research, education, and traditional knowledge in ecology: a case study of biocomplexity in Arctic ecosystems. Arctic, Antarctic, and Alpine Research, 42:(4):379-384. (PDF)
    30. Gubarkov, A. 2010. Issues of Yamal Peninsula gas fields development. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    31. Heim, B., Bartsch, A., Boike, J., Hubberten, H.-W. 2010. DUE Permafrost: a spaceborne permafrost monitoring and information system. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    32. Jia, G.J., Epstein, H.E., Walker, D.A., Raynolds, M.K., Yonghong, H., Tucker, C. 2010. Satellite view of changing phenological patterns over Arctic tundra biome. State of the Arctic Meeting. Miami, FL March 16-19. (Poster)
    33. Jia, G.J., Hu, Y., Wang, H., Epstein, H.E., Walker, D.A. 2010. Greening and Seasonality: Multi-scale Approaches. Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland 8-10 March 2010. (Talk)
    34. Kaplan, J.O., Melton, J.R., Pfeiffer, M., Collins, P.M. 2010. Large-scale dynamic modeling of soil-vegetation interactions. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    35. Khitun, O., Rebristaya, O. 2010. Concrete Flora Concept as a Base for Floristic Investigations in the Russian Arctic. Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    36. Khitun, O.V., Moskalenko, N.G. 2010. Summary of Yamal vegetation and flora. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    37. Khomutov, A.V., Leibman, M.O. 2010. Landscape pattern and cryogenic landsliding hazard analysis at Vaskiny Dachi, Central Yamal. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    38. Khomutov, A.V., Leibman, M.O., Epstein, H.E. 2010. Relation between active-layer depth, NDVI and LAI along the Yamal Transect. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    39. Kumpula, T., Forbes, B.C., Stammler, F. 2010. Land-use and land-cover changes in Yamal peninsula. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    40. Kumpula, T., Forbes, B.C., Stammler, F. 2010. Remote sensing and local knowledge of hydrocarbon exploitation: the case of Bovanenkovo, Yamal Peninsula, West Siberia, Russia. Arctic, 63:(2):165-178.
    41. Leibman, M.O., Gubarkov, A.A., Khumotov, A.V., Moskalenko, N.G., Orekhov, P.T., Ponomareva, O.E., Gameev, I.A. 2010. Geocryological Map of the USSR, 1:2,500,000, 1991. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    42. Maier, H.A., Walker, D.A. 2010. Ostrov Belyy (White Island), Yamal Peninsula region, Russia: Landsat ETM+ false color image, land-cover map, and NDVI map (1:200K scale). Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    43. Maier, H.A., Walker, D.A. 2010. Yamal Peninsula, Russia: Landsat TM Mosaic Image (1:1M scale), Land-Cover Maps and NDVI Maps of the LCLUC Study Areas (1:250K-1:300K scales). Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    44. Maier, H.A., Walker, D.A. 2010. Application of Global Land Survey data to land-cover mapping: Yamal Peninsula, Russia. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Poster)
    45. Moskalenko, N.G. 2010. Vegetation Dynamics at the Nadym and Kharasavei sites in the West Siberia North. Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    46. Orekhov, P., Leibman, M.O. 2010. Yamal Peninsula, climate, zonation, physiography, geology, permafrost. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    47. Pinzon, J.E., Tucker, C.J. 2010. GIMMS 3g NDVI set and global NDVI trends. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    48. Raynolds, M.K., Walker, D.A., Bhatt, U.S., Pinzon, J.E., Comiso, J.C. 2010. NDVI trends 1981-2008 in the circumpolar Arctic and Yamal. Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Talk)
    49. Raynolds, M.K., Walker, D.A., Verbyla, D., Munger, C.A. 2010. Changes in tundra vegetation over 25 years as measured by Landsat NDVI in the Upper Kuparuk River Basin, North Slope Alaska, 1985-2009. Abstract GC43B-0984, presented at AGU Fall Meeting. San Francisco, CA, 13-17 December. (Poster)
    50. Stammler, F. 2010. Humans and animals on northern Yamal: uncovering unknown patterns of movement and settlement.. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    51. Streletskiy, D.A., Nelson, F.E., Shiklomanov, N.I. 2010. Spatial and temporal variability of active-layer thickness under changing climatic conditions in Northwest Siberia. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    52. Talbot, S.S., Walker, D.A. 2010. Circumboreal Vegetation Mapping (CBVM) Project: Introduction and objectives. Circumboreal Vegetation Mapping (CBVM) Workshop. Helsinki, Finland, November 3-6, 2008, 1-3. (Talk)
    53. Ukraintseva, N.K. 2010. High Willow Shrubs in Yamal: Reasons of Their Wide Expansion and Methods of Biomass Assessment. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    54. Walker, D.A. 2010. An integrated mapping approach and suggestions for incorporating tundra into the CBVM legend. Circum-Boreal Vegetation Mapping Workshop. Helsinki, Finland March 12-14.
    55. Walker, D.A. 2010. Is Arctic refuge grass greener?. Fairbanks Daily News-Miner. (Talk)
    56. Walker, D.A. 2010. Welcome, goals of the workshop, and overview of the project. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    57. Walker, D.A. 2010. Greening of the Arctic: Spatial and temporal (1982-2009) variation of circumpolar tundra NDVI and aboveground biomass. Abstract GC53B-01, presented at AGU Fall Meeting. San Francisco, CA, 13-17 December. (Talk)
    58. Walker, D.A., Bhatt, U.S., Comiso, J.C., Epstein, H.E., Gould, W.A., Henry, G.H.R., Jia, G.J., Kokelj, S.V., Lantz, T.C., Mercado-Diaz, J.A., Pinzon, J.E., Raynolds, M.K., Shaver, G.R., Tucker, C.J., Tweedie, C.E., Webber, P.J. 2010. The Arctic: Land: Vegetation. Bulletin of the American Meteorological Society, 91(7):S115-S116. (State of the Climate in 2009) doi:10.1175/BAMS-91-7-StateoftheClimate. (PDF)
    59. Walker, D.A., Bhatt, U.S., Epstein, H.E., Forbes, B.C., Liebman, M.O. 2010. Adaptation to rapid land-use and climate changes on the Yamal Peninsula, Russia: Remote sensing and models for analyzing cumulative effects. AGC Annual Report, 16 pp. (PDF)
    60. Walker, D.A., Epstein, H.E., Bhatt, U.S., Leibman, M.O., Forbes, B., Romanovsky, V.E., Raynolds, M.K., Jia, G.J., Frost, G.V., Khomutov, A.V., Moskalenko, N.G., Orekhov, P., Matyshak, G., Webber, P.J., Tweedie, C.E., Gould, W.A., Mercado, J., Munger, C.A., Maier, H.A., Comiso, J., Pinzon, J.E., Tucker, C.J., Ukraintseva, N.G., Drozdov, D.S., Gubarkov, A.A., Kaarlejärvi, E., Khitun, O., Kuss, P., Yu, Q. 2010. Greening of the Arctic: A planet-to-plant analysis of Arctic vegetation change. IPY Oslo Science Conference. Oslo, Norway 8-12 June. (Talk)
    61. Walker, D.A., Epstein, H.E., Bhatt, U.S., Maier, H.A., frost, G.V., Raynolds, M.K., Comiso, J.C., Daanen, R.P., Drozdov, D.S., Forbes, B.C., Gubarkov, A.A., Jia, G.J., Kaarlejärvi, E., Khitun, O., Khumotov, A.V., Kuss, H.P., Leibman, M.E., Matyshak, G., Moskalenko, N.G., Orekhov, P., Pinzon, J.E., Romanovsky, V.E., Tucker, C.J., Ukraientseva, N.K., Yu, Q. 2010. Greening of the Arctic: A planet-to-plant analysis of tundra vegetation change. State of the Arctic Meeting. Miami, Fl 16-19 March. (Talk)
    62. Walker, D.A., Epstein, H.E., Maier, H.A., Frost, G.V., Raynolds, M.K., Bhatt, U.S., Comiso, J.C., Daanen, R.P., Drozdov, D.S., Forbes, B.C., Gubarkov, A.A., Jia, G.J., Kaarlejärvi, E., Khitun, O., Khomutov, A.V., Kuss, P., Leibman, M.O., Matyshak, G., Moskalenko, N.G., Orekhov, P., Pinzon, J.E., Romanovsky, V.E., Tucker, C.J., Ukraintseva, N.G., Yu, Q. 2010. The Yamal LCLUC Study: Vegetation analysis and mapping along a 900-km Arctic transect. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 20-22 April. (Poster)
    63. Walker, D.A., Epstein, H.E., Maier, H.A., Frost, G.V., Raynolds, M.K., Bhatt, U.S., Liebman, M.O., Moskalenko, N., Forbes, B.C., Romanovsky, V.E., Comiso, J.C., Daanen, R., Drozdov, D.S., Kaarlejärvi, E., Khitun, O., Khomutov, A.V., Kuss, P., Matyshak, G., Orechov, P., Pinzon, J.E., Tucker, C.J. 2010. The Yamal Transect: Vegetation Analysis and Mapping (a plant to planet approach). Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Talk)
    64. Walker, D.A., Raynolds, M.K., Kofinas, G.P. 2010. Arctic LTER: Map Analysis. MALS Workshop. Fairbanks, AK October 8-9. (Talk)
    65. Walker, D.A., Raynolds, M.K., Maier, H.A., Barbour, E.M., Neufeld, G.P. 2010. Circumpolar geobotanical mapping: a web-based plant-to-planet approach for vegetation-change analysis in the Arctic. Abstract Conference Website, presented at Mapping and Monitoring of Nordic Vegetation and Landscapes Conference. Hveragerði, Iceland 16-18 September. (Talk)
    66. Walker, D.A., Raynolds, M.K., Maier, H.A., Barbour, E.M., Neufeld, G.P. 2010. Circumpolar geobotanical mapping: a web-based plant-to-planet approach for vegetation-change analysis in the Arctic. Viten, 1:125-128. (Conference Website) (PDF)
    67. Walker, D.A., Walker, M.D., Gould, W.A., Mercado, J., Auerbach, N.A., Maier, H.A., Neufeld, G.P. 2010. Maps for monitoring changes to vegetation structure and composition: The Toolik and Imnavait Creek grid plots. Abstract Conference Website, presented at Mapping and Monitoring of Nordic Vegetation and Landscapes Conference. Hveragerði, Iceland 16-18 September. (Poster)
    68. Walker, D.A., Walker, M.D., Gould, W.A., Mercado, J., Auerbach, N.A., Maier, H.A., Neufeld, G.P. 2010. Maps for monitoring changes to vegetation structure and composition: The Toolik and Imnavait Creek grid plots. Viten, 1:121-123. (Conference Website) (PDF)
    69. Yu, Q., Epstein, H.E., Walker, D.A. 2010. Controls on arctic tundra vegetation dynamics on the Yamal Peninsula, Russia - an integrative study using ArcVeg and multi-temporal Landsat imagery. Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Talk)
    70. Yu, Q., Epstein, H.E., Walker, D.A. 2010. Land surface dynamics on the Yamal Peninsula based on multi-temporal imagery. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Poster)
    71. Yu, Q., Epstein, H.E., Walker, D.A., Frost, G.V. 2010. Modeling dynamics of tundra plant communities on the Yamal Peninsula. Abstract GC54A-04, presented at AGU Fall Meeting. San Francisco, CA, 13-17 December. (Talk)
  1. 2009

    1. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Jia, G.J., Gens, R. 2009. Greening of Arctic tundra is linked to warming summer land temperatures and sea-ice declines. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March - 2 April. (Poster)
    2. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Rudiger, G. 2009. Panarctic linkages between greening of Arctic tundra, sea ice decline, and summer land temperatures. NEESPI Workshop CITIES-2009. Krasnoyarsk, Russia July 14. (Talk)
    3. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Steele, M., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2009. Seasonality of the air-sea-ice-land environment of Arctic tundra in Northern Eurasia and North America. Department of Atmospheric Sciences, Informal Seminar. Fairbanks, AK Nov. 18. (Talk)
    4. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Steele, M., Epstein, H.E., Jia, G.J., Comiso, J.C., Pinzon, J.E., Tucker, C.J. 2009. Seasonality of the air-sea-ice-land environment of Arctic tundra in Northern Eurasia and North America. Abstract GC31A-0701, presented at AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0701. (Poster)
    5. Epstein, H.E., Walker, D.A., Karlejaärvi, E., Kuss, P., Moskalenko, N.G., Orekhov, P.T., Gubarkov, A.A., Khomutov, A.V., Liebman, M.O., Matyshak, G.V. 2009. Biomass-NDVI-LAI patterns and relationships on the Yamal Peninsula, Russia. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 Mar-2 Apr. (Poster)
    6. Epstein, H.E., Walker, D.A., Raynolds, M.K., Kelley, A.M., Jia, G.J., Ping, C.L., Michaelson, G.J., Liebman, M.O., Kaarlejärvi, E., Khumotov, A.V., Kuss, H.P., Moskalenko, N.G., Orekhov, P., Matyshak, G., Forbes, B.C., Yu, Q. 2009. Vegetation biomass, leaf area index, and NDVI patterns and relationships along two latitudinal transects in arctic tundra. Abstract GC31A-0697, presented at AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0697. (Poster)
    7. Forbes, B.C., Stammler, F., Kumpula, T., Meschtyb, N., Pajunen, A., Kaarlejärvi, E. 2009. High resilience in the Yamal-Nenets social-ecological system, West Siberian Arctic, Russia. Proc. Natl. Acad. Sci., 106:(52):22041-22048. (PDF)
    8. Frost, G.V., Epstein, H.E., Jorgenson, M.T. 2009. Spatio-temporal trends in tree and tall shrub cover in the circumpolar Arctic: evidence from repeat ground photographs and 1960s satellite imagery. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March - 2 April. (PDF)
    9. Frost, G.V., Epstein, H.E., Walker, D.A. 2009. Spatio-temporal trends in tree and tall shrub cover in the Eurasian Low Arctic: evidence from 1960s and contemporary satellite imagery and ground observations. Abstract GC31A-0698, presented at AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0698. (Poster)
    10. Groisman, P.Y., Clark, E.A., Kattsov, V.M., Lettenmaier, D.P., Sokolik, I.N., Aizen, V.B., Cartus, O., Chen, J., Conard, S., Katzenberger, J., Krankina, O., Kukkonen, J., Machida, T., Maksyutov, S., Ojima, D., Qi, J., Romanovsky, V.E., Santoro, M., Schmullius, C.C., Shiklomanov, A.I., Shimoyama, K., Shugart, H.H., Shuman, J.K., Sofiev, M.A., Sukhinin, A.I., Vorosmarty, C., Walker, D.A., Wood, E.F. 2009. The Northern Eurasia Earth Science Partnership: An example of Science Applied to Societal Needs. Bulletin of the American Meteorological Society, 90:671-688. (Permanent link) doi:10.1175/2008BAMS2556.1. (PDF)
    11. Jia, G.J., Epstein, H.E., Walker, D.A. 2009. Vegetation greening in the Canadian Arctic related to decadal warming. Journal of Environmental Monitoring, 11:2231-2238. (Purchase PDF) doi:10.1039/B911677J.
    12. Jia, G.J., Epstein, H.E., Walker, D.A., Hu, Y., Wang, H. 2009. Decadal changes of phenological patterns over Arctic tundra biome. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Poster)
    13. Kataoka, M. 2009. ESRI Map Book, Volume 24. ESRI Press. Redlands, CA. 24(24). 120 . (ESRI Map Book, Volume 24: Vegetation in the Vicinity of the Toolik Field Station, Alaska; Alaska Geobotany Center) (PDF)
    14. Kelley, A.M., Epstein, H.E. 2009. Effects of nitrogen fertilization on plant communities of nonsorted circles in moist nonacidic tundra, Northern Alaska. Arctic, Antarctic, and Alpine Research, 41(1):119-127. (BioOne online article) doi:10.1657/1523-0430-41.1.119. (PDF)
    15. Khomutov, A.V., Leibman, M.O., Moskalenko, N.G., Epstein, H.E., Walker, D.A. 2009. Numerical characteristics of vegetation and their influence on active layer depth. International Workshop on the results of IPY. Sochi, Krasnodar Krai, Russia 28 September - 1 October. (Talk)
    16. Leibman, M.O., Khomutov, A.V. 2009. Environmental controls of the thaw depth and rate of thaw under climate fluctuations. Abstract Abstract, presented at Association of American Geographers Annual Meeting. Las Vegas, NV, March 22-27. (Talk)
    17. Leibman, M.O., Ukraintseva, N.K. 2009. Mechanisms and geoecological consequences of cryogenic landslides in the area of marine sedimentation. Abstract EGU2009-3980, presented at European Geosciences Union General Assembly 2009. Vienna, Austria, April 19-24, 11:EGU2009-3980. (Talk)
    18. Ravilious, K. 2009. Siberia's Arctic landscape is getting greener. Environmental Research Web. (Environmental Research Web)
    19. Raynolds, M.K. 2009. A geobotanical analysis of circumpolar arctic vegetation, climate, and substrate. Ph.D. Thesis, University of Alaska Fairbanks, 260.
    20. Raynolds, M.K., Walker, D.A. 2009. Effects of deglaciation on circumpolar distribution of arctic vegetation. Canadian Journal of Remote Sensing, 35:(2):118-129. (Permanent link) (PDF)
    21. Raynolds, M.K., Walker, D.A., Verbyla, D., Huetmann, F. 2009. Modeling the distribution of circumpolar arctic vegetation. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, Maryland 31 March-2 April. (Poster)
    22. Walker, D.A. 2009. Arctic land is greening, says scientist. (mp3). mp3
    23. Walker, D.A. 2009. The integrated mapping approach used in mapping the Arctic tundra biome. North American CBVM Workshop. Great Lakes Forestry Centre, Sault Ste Marie, Ontario, Canada December 1-2. (Talk)
    24. Walker, D.A., Bhatt, U.S., Epstein, H.E., Raynolds, M.K., Frost, G.V., Liebman, M.O., Khumotov, A.V., Jia, G.J., Forbes, B.C., Comiso, J.C., Pinzon, J.E., Tucker, C.J., Webber, P.J., Tweedie, C.E. 2009. Circumpolar Arctic greening: Relationships to summer sea-ice concentrations, land temperatures and disturbance regimes. Abstract GC43B-08, presented at AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC43B-08. (Talk)
    25. Walker, D.A., Bhatt, U.S., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Jia, G.J. 2009. The Arctic: Land: Vegetation. Bulletin of the American Meteorological Society, 90(8):S104-S105. (State of the Climate in 2008) doi:10.1175/BAMS-90-8-StateoftheClimate. (PDF)
    26. Walker, D.A., Bhatt, U.S., Raynolds, M.K., Comiso, J.C., Epstein, H.E., Jia, G.J., Pinzon, J.E., Tucker, C.J. 2009. Vegetation. in Richter-Menge, J., Jeffries, M.O., Overland, J.E. (eds.) Arctic Report Card 2008. NOAA. pp. 3. (Website) (PDF)
    27. Walker, D.A., Epstein, H.E., Leibman, M.E., Moskalenko, N.G., Kuss, J.P., Matyshak, G.V., Kaarlejärvi, E., Barbour, E.M. 2009. Data Report of the 2007 and 2008 Yamal Expeditions: Nadym, Laborovaya, Vaskiny Dachi, and Kharasavey. AGC Data Report, 133 pp. (PDF)
    28. Walker, D.A., Hamilton, T.D., Ping, C.-L., Daanen, R.P., Streever, W.W. 2009. Dalton Highway Field Trip Guide for the Ninth International Conference on Permafrost. Division of Geological and Geophysical Surveys. Fairbanks, AK. 9. 117 . (Print copy) (PDF)
    29. Walker, D.A., Leibman, M.O., Epstein, H.E., Forbes, B.C., Bhatt, U.S., Raynolds, M.K., Comiso, J., Gubarkov, A.A., Khomutov, A.V., Jia, G.J., Kaarlejärvi, E., Kaplan, J.O., Kumpula, T., Kuss, H.P., Matyshak, G., Moskalenko, N.G., Orechov, P., Romanovsky, V.E., Ukraientseva, N.K., Yu, Q. 2009. Spatial and temporal patterns of greenness on the Yamal Peninsula, Russia: interactions of ecological and social factors affecting the Arctic normalized difference vegetation index. Environmental Research Letters, 4:16. doi:10.1088/1748-9326/4/4/045004. (PDF)
    30. Walker, D.A., Leibman, M.O., Epstein, H.E., Forbes, B.C., Bhatt, U.S., Raynolds, M.K., Comiso, J.C., Gubarkov, A.A., Khomutov, A.V., Jia, G.J., Kaarlejärvi, E., Kaplan, J.O., Kumpula, T., Kuss, P., Matyshak, G., Moskalenko, N.G., Orekhov, P., Ukraientseva, N.K., Yu, Q. 2009. Vegetation greenness on the Yamal Peninsula, Russia: Disturbance-climate-change interactions. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Poster)
    31. Walker, D.A., Orekhov, P., Frost, G.V., Matyshak, G., Epstein, H.E., Leibman, M.O., Khitun, O., Khomotov, A., Daanen, R., Gobroski, K., Maier, H.A. 2009. The 2009 Yamal Expedition to Ostrov Belyy and Kharp, Yamal Region, Russia. AGC Data Report, 63 pp. (PDF)
    32. Walker, D.A., Walker, M.D., Auerbach, N.A., Maier, H.A., Neufeld, G.P. 2009. Toolik Grid Plots: Baseline canopy height and species composition in 1990. Mapping and Monitoring of Nordic Vegetation and Landscapes. Hveragerdi, Iceland 16-18 September. (Poster)
    33. Yu, Q., Epstein, H.E., Walker, D.A. 2009. Simulating soil organic nitrogen and grazing effects on arctic vegetation dynamics on the Yamal Peninsula, Russia. Environmental Research Letters, 4(4). doi:10.1088/1748-9326/4/4/045027. (PDF)
    34. Yu, Q., Epstein, H.E., Walker, D.A. 2009. Simulating soil organic nitrogen and grazing effects on arctic tundra vegetation dynamics on the Yamal Peninsula, Russia. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Poster)
    35. Yu, Q., Epstein, H.E., Walker, D.A. 2009. Evaluating Environmental Controls on Arctic Tundra Vegetation Dynamics on Yamal Peninsula, Russia. EnviroDay. University of Virginia, VA January 12. (Poster)
    36. Yu, Q., Epstein, H.E., Walker, D.A. 2009. Simulating soil organic nitrogen and grazing effects on arctic tundra vegetation dynamics on the Yamal Peninsula, Russia. Abstract GC31A-0693, presented at AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0693. (Talk)
  1. 2008

    1. Anon. 2008. Agenda and Abstracts. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    2. Bhatt, U.S., Walker, D.A., Raynolds, M., Comiso, J. 2008. Examining relationships between sea ice and Arctic vegetation on the Pan-Arctic, regional and site scales. Abstract EGU2008-A-11271, presented at European Geosciences Union General Assembly. Vienna, Austria, 13 -18 April, 10:EGU2008-A-11271.
    3. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C. 2008. Circumpolar and regional analysis of the relationship between sea-ice variability, summer land-surface temperatures, Arctic tundra greenness and large-scale climate drivers. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD 28 April - 2 May . (Poster)
    4. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C. 2008. Pan-Arctic climate dynamics in relationship to sea ice, land-surface temperatures and NDVI: focus Yamal region & comparison with North America. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    5. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C. 2008. Application of Space-based Technologies and Models to Address Land-cover/Land-use Change Problems on the Yamal Peninsula, Russia: Circumpolar and regional analysis of the relationship between sea-ice variability, summer land-surface temperatures, Arctic t. Abstract NASA CCE website, presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May 2. (Poster)
    6. Comiso, J.C. 2008. Decadal Changes in the Arctic Sea Ice Cover and Surface Temperature with especial focus on Yamal, Alaska and the Canadian Peninsula. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    7. Comiso, J.C., Nishio, F. 2008. Trends in the sea ice cover using enhanced and compatible AMSR-E,SSM/I, and SMMR data. Journal of Geophysical Research, 113:C02S07. doi:10.1029/2007JC004257. (PDF)
    8. Comiso, J.C., Parkinson, C.L., Gersten, R., Stock, L. 2008. Accelerated decline in the Arctic sea ice cover. Geophysical Research Letters, 35:L01703. (Abstract) doi:10.1029/2007GL031972. (PDF)
    9. Cook, B., Bonan, G., Levis, S., Epstein, H. 2008. Rapid vegetation responses and feedbacks amplify climate model response to snow cover changes. Climate Dynamics, 30(4):391-406. (Permanent link) doi:10.1007/s00382-007-0296-z. (PDF)
    10. Cook, B.I., Bonan, G.B., Levis, S., Epstein, H.E. 2008. The thermoinsulation effect of snow cover within a climate model. Climate Dynamics, 31(1):107-124. doi:10.1007/s00382-007-0341-y. (PDF)
    11. Daanen, R., Romanovsky, V., Walker, D., LaDouceur, M. 2008. High resolution, surface and subsurface survey of a non-sorted circle system. Abstract Session 1P-9-62, presented at Ninth International Conference on Permafrost. Fairbanks, AK, June 29 - July 3, 1:321-326. (Poster)
    12. Daanen, R.P., Misra, D., Epstein, H., Walker, D., Romanovsky, V. 2008. Simulating nonsorted circle development in arctic tundra ecosystems. Journal of Geophysical Research - Biogeosciences, 113:1-10. (Permanent link) doi:10.1029/2008JG000682. (PDF)
    13. Drozdov, D.S. 2008. Mapping and remote sensing of natural and technogenic geosystems in West Siberia. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    14. Epstein, H.E. 2008. Field and Modeling Analyses of Tundra Vegetation Communities Along Latitudinal Temperature Gradients. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    15. Epstein, H.E., Walker, D.A., Kuss, P., Karlejaärvi, E. 2008. (1)LAI, NDVI, and vegetation biomass for Low Arctic sites in the Yamal region of Russia (2)An overview of modeling vegetation and ecosytem dynamics in arctic tundra. Yamal Land-Cover Land-Use Change Workshop Moscow, Russia 28-30 January. (Talk)
    16. Epstein, H.E., Walker, D.A., Kuss, P., Karlejaärvi, E., Matyshak, G. 2008. Ecosystem Properties along a Latitudinal Gradient of the Yamal Region, Russia. Abstract EGU2008-A-04406, presented at European Geosciences Union General Assembly. Vienna, Austria, 13 - 18 April, 10:EGU2008-A-04406. (Poster)
    17. Epstein, H.E., Walker, D.A., Kuss, P., Karlejaärvi, E., Matyshak, G.V. 2008. Ecosystem Properties along a Latitudinal Gradient of the Yamal Region, Russia. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD 28 April - 2 May. (PDF)
    18. Epstein, H.E., Walker, D.A., Raynolds, M.K., Jia, G.J., Kelley, A.M. 2008. Phytomass patterns across a temperature gradient of the North American arctic tundra. Journal of Geophysical Research - Biogeosciences, 113:1-11. (Permanent link) (PDF)
    19. Forbes, B.C., Stammler, F., Pajunen, A., Karlejaärvi, E. 2008. Cumulative Effects of Industrial Development, Reindeer Herding, and Climate Change on the Yamal Peninsula, Russia. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May2. (Poster)
    20. Forbes, B.C., colleagues, w.m.d. 2008. Effects of petroleum development on reindeer herding in Northwest Siberia: Combining scientific and traditional knowledge. Yamal Land Cover and Land Use Workshop. Moscow, Russia January 28-30. (Talk)
    21. Gubarkov, A.A. 2008. Overview of gas and oil development on the Yamal Peninsula. Yamal Land-Cover Land-Use Change Workshop Moscow, Russia 28-30 January. (Talk)
    22. Jia, G.J., Epstein, H.E., Walker, D.A., Wang, H. 2008. Decadal changes of phenological patterns over arctic tundra biome. Abstract C21C-0559, presented at AGU Fall Meeting. San Francisco, CA, Dec. 15-19, 89:C21C-0559. (Poster)
    23. Jia, G.J., Wang, H., Epstein, H.E., Walker, D.A. 2008. Greening of Arctic: Knowledge and Uncertainties. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    24. Kade, A., Walker, D.A. 2008. Experimental alteration of vegetation on nonsorted circles: effects on cryogenic activity and implications for climate change in the Arctic. Arctic, Antarctic, and Alpine Research, 40(1):96-103. (Abstract) doi:10.1657/1523-0430(06-029)[KADE]2.0.CO;2. (PDF)
    25. Kaplan, J.O., Lischke, H., Melton, J.R. 2008. Dynamic Modeling of Global Arctic and Subarctic Vegetation. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    26. Khomutov, A.V., Leibman, M.O. 2008. Landscape structure in natural and disturbed conditions of Yamal Peninsula, field results and local GIS. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    27. Kumpula, T. 2008. Remote sensing of land-use/land-cover change in the Bovanenkovo gas field on the Yamal Peninsula. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia 28-30 January. (Talk)
    28. Kumpula, T., Forbes, B.C., Stammler, F. 2008. Landscape Change in the Russian Arctic: Ecological Implications of the Petroleum Industry to the Nenets Reindeer Herding in Yamal Peninsula. 20th Annual Meeting and Arctic Forum. Washington, D.C. 13 - 15 May 2008. (Poster)
    29. Kuss, P., Karlejaärvi, E., Moskalenko, N., Epsein, H., Walker, D. 2008. Plant communities at Nadym, Laborovaya, and Vaskiny Dachi. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia 28-30 January. (Talk)
    30. Leibman, M.O. 2008. Welcome. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30, 2008. (Talk)
    31. Leibman, M.O., Epstein, H.E., Khomutov, A.V., Moskalenko, N.G., Walker, D.A. 2008. Relation of active layer depth to vegetation on the central Yamal Peninsula, Russia. Abstract Session 2P-4-43, presented at Ninth International Conference on Permafrost. Fairbanks, AK, June 29-July 3, Extended Abstracts 2:177-178. (Poster)
    32. Leibman, M.O., Malkova , G., Khomutov, A., Gubarkov , A. 2008. Overview of Yamal Peninsula with focus on Laborovaya and Vaskiny Dachi: Climate, zonation, physiography, geology, permafrost. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    33. Matyshak, G.V. 2008. Soils at Nadym and Yamal area. Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28. (Talk)
    34. Melnikov, V.P., Drozdov, D.S., Malkova, G.V. 2008. Permafrost: contemporary state, stability and dynamics. Technogenic influence. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    35. Michaelson, G.J., Ping, C.L., Epstein, H., Kimble, J.M., Walker, D.A. 2008. Soils and frost boil ecosystems across the North American Arctic Transect. Journal of Geophysical Research - Biogeosciences, 113:G03S11, 10.1029/2007JG000672. (Abstract) doi:10.1029/2007JG000672. (PDF)
    36. Moskalenko, N.G. 2008. Overview of vegetation dynamics, disturbance and recovery studies in Nadym and Yamal areas. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    37. Munger, C.A., Walker, D.A., Maier, H.A., Hamilton, T.D. 2008. Spatial analysis of glacial geology, surficial geomorphology, and vegetation in the Toolik Lake region: Relevance to past and future land-cover changes. Ninth International Conference on Permafrost. Fairbanks, AK June 29 - July 3, 2:1255-1260. (Talk)
    38. Nicolsky, D.J., Romanovsky, V.E., Tipenko, G.S., Walker, D.A. 2008. Modeling biogeophysical interactions in nonsorted circles in the Low Arctic. Journal of Geophysical Research - Biogeosciences, 113:1-17. (Abstract) doi:10.1029/2007JG000565. (PDF)
    39. Nicolsky, D.J., Romanovsky, V.E., Tipenko, G.S., Walker, D.A. 2008. Modeling observed differential frost heave within non-sorted circles in Alaska. Abstract Session 3P-6-54, presented at Ninth International Conference on Permafrost. Fairbanks, AK, June 29-July 3, 2:1281-1286. (Poster)
    40. Orekhov, P.T. 2008. Lake ecosystems in different landscapes in the Nadym region. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    41. Peterson, R.A. 2008. Numerical modeling of differential frost heave. Ninth International Conference on Permafrost. Fairbanks, AK, June 29-July 3, 2:1399-1404. (Talk)
    42. Peterson, R.A., Krantz, W.B.a. 2008. Differential frost heave model for patterned ground formation: Corroboration with observations along a North American Arctic Transect. Journal of Geophysical Research - Biogeosciences, 113:G03S04, 1-17. (Abstract) doi:10.1029/2007JG000559. (PDF)
    43. Ping, C.-L., Michaelson, G.J., Jorgenson, M.T., Kimble, J.M., Epstein, H., Romanovsky, V.E., Walker, D.A. 2008. High stocks of soil organic carbon in North American Arctic region. Nature Geoscience, 1:615-619. (Abstract) doi:10.1038/ngeo284. (PDF)
    44. Ping, C.-L., Michaelson, G.J., Kimble, J.M., Romanovsky, V.E., Shur, Y.L., Swanson, D.K., Walker, D.A. 2008. Cryogenesis and soil formation along a bioclimate gradient in Arctic North America. Journal of Geophysical Research - Biogeosciences, 113:G03S12. (Permanent link) doi:10.1029/2008JG000744. (PDF)
    45. Ponomareva, O.E. 2008. Overview of Nadym Region: Climate, Zonation, Physiography, Geology, Permafrost. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    46. Raynolds, M.K., Comiso, J.C., Walker, D.A., Verbyla, D. 2008. Relationship between satellite-derived land surface temperatures, arctic vegetation types, and NDVI. Remote Sensing of Environment, 112(4):1884-1894. (Permanent link) doi:10.1016/j.rse.2007.09.008. (PDF)
    47. Raynolds, M.K., D.A. Walker, and J.C. Comiso 2008. Spatial patterns of land surface temperature and NDVI and their relation to vegetation distribution on the Yamal Peninsula. Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28-30. (Talk)
    48. Raynolds, M.K., Walker, D.A. 2008. Circumpolar relationships between permafrost characteristics, NDVI, and arctic vegetation types. Ninth International Conference on Permafrost. Fairbanks, AK, June 29-July 3, 2:1469-1474. (Talk)
    49. Raynolds, M.K., Walker, D.A., Comiso, J.C. 2008. Spatial Patterns of Land Surface Temperature and NDVI on the Yamal Peninsula, Russia. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May 2. (Poster)
    50. Raynolds, M.K., Walker, D.A., Comiso, J.C. 2008. Circumpolar AVHRR Surface Temperature and its Relationship to Bioclimate Zones and NDVI. Komarov Botanical Institute. St. Petersburg, Russia February 5. (Talk)
    51. Raynolds, M.K., Walker, D.A., Munger, C.A., Vonlanthen, C.M., Kade, A.N. 2008. A map analysis of patterned-ground along a North American Arctic Transect. Journal of Geophysical Research - Biogeosciences, 113:1-18. (Abstract) doi:10.1029/2007JG000512. (PDF)
    52. Romanovsky, V., Kholodov, A., Marchenko, S. 2008. Pan-Arctic permafrost thermal conditions: Where does the Yamal Peninsula fit?. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    53. Romanovsky, V.E., Marchenko, S.S., Daanen, R., Sergeev, D.O., Walker, D.A. 2008. Soil climate and frost heave along the permafrost/ecological North American Arctic transect. Ninth International Conference on Permafrost. Fairbanks, AK, June 28-July3, 2:1519-1524. (Talk)
    54. Stammler, F. 2008. A century of nomadic land use. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    55. Vonlanthen, C.M., Walker, D.A., Raynolds, M.K., Kade, A., Kuss, H.P., Daniëls, F.J.A., Matveyeva, N.V. 2008. Patterned-ground plant communities along a bioclimate gradient in the High Arctic, Canada. Phytocoenologia, 38:23-63. (Abstract) doi:10.1127/0340-269X/2008/0038-0023. (PDF)
    56. Walker, D.A. 2008. Arctic sea ice, Arctic vegetation change and lessons from 2007. Arctic Observation Integration Workshop. Palisades, NY March 17-20. (Talk)
    57. Walker, D.A. 2008. North American Arctic Transect. 20th Annual Meeting and Arctic Forum. Washington, D.C. May 13-15 . (Poster)
    58. Walker, D.A. 2008. Overview of the Yamal LCLUC Project and Objectives of the Meeting. Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Talk)
    59. Walker, D.A. 2008. Greening of the Arctic: An IPY Initiative. Does the loss of sea ice affect the tundra and those who depend on it?. Institute of Arctic Biology Seminar. Fairbanks, AK November 21. (Talk)
    60. Walker, D.A. 2008. Biocomplexity of Arctic Patterned Ground: A tale of cracking, heaving, and smothering!. Dynamics of Complex Systems: Common Threads Workshop. Fairbanks, AK 6 August. (Talk)
    61. Walker, D.A. 2008. Application of space-based technologies and models to address land-cover/land-use change problems on the Yamal Peninsula, Russia. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May 2. (Talk)
    62. Walker, D.A. 2008. Application of Space-based Technologies and Models to Address Land-cover/Land-use Change problems on the Yamal Peninsula, Russia. AGC Annual Report, 20 pp. (PDF)
    63. Walker, D.A. 2008. Monitoring spatial and temporal changes in Arctic vegetation. CBMP Partnership Workshop. Washington, D.C. March 6-7. (Talk)
    64. Walker, D.A. 2008. Biocomplexity associated with biogeochemical cycles in arctic frost-boil ecosystems. AGC Final Report. , 77. (PDF)
    65. Walker, D.A. and Epstein, H.E. 2008. Collaborative Research: Greening of the Arctic - Synthesis and models to examine pan-Arctic vegetation change: climate, sea-ice, and terrain linkages. AGC Annual Report , 16 pp. (PDF)
    66. Walker, D.A., Barbour, E.M., Maier, H.A. 2008. A Web-based Arctic Geobotanical Atlas and a New Hierarchy of Maps of the Toolik Lake Region, Alaska. Ninth International Conference on Permafrost. Fairbanks, AK, June 29 - July 3, 2:1893-1898. (Talk)
    67. Walker, D.A., Bhatt, U.S., Epstein, H.E. 2008. Greening of the Arctic: an IPY Initiative. Abstract U23F-05 INVITED, presented at AGU Fall Meeting. San Francisco, CA, December 12-15, 89:1. (Talk)
    68. Walker, D.A., Bhatt, U.S., Romanovsky, V.E., Kofinas, G.P., Raynolds, M.K., Epstein, H.E., Yu, Q., Forbes, B.C., Stammler, F., Karlejaärvi, E., Leibman, M., Moskalenko, N., Gubarkov, A., Khomutov, A., Kumpula, T., Comiso, J.C., Kuss, J.P., Jia, G.J., Kaplan, J.O., Matyshak, G. 2008. Cumulative effects of resource development, reindeer herding, and climate change on the Yamal Peninsula. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD 28 April - 2 May. (Talk)
    69. Walker, D.A., Bhatt, U.S., Romanovsky, V.E., Kofinas, G.P., Raynolds, M.K., Epstein, H.E., Yu, Q., Forbes, B.C., Stammler, F., Karlejäarvi, E., Leibman, M., Moskalenko, N., Gubarkov, A., Khomutov, A., Kumpula, T., Comiso, J.C., Kuss, J.P., Jia, G.J., Kaplan, J.O., Matyshak, G. 2008. Application of space-based technologies and models to address land-cover/land-use change problems on the Yamal Peninsula, Russia. Abstract EGU2008-A-05697, presented at European Geosciences Union General Assembly. Vienna, Austria, April 13-18, 10:EGU2008-A-05697. (Talk)
    70. Walker, D.A., Epstein, H.E., Karlejaärvi, E., Kuss, J.P., Leibman, M.O., Matyshak, G.V., Moskalenko, N.G., Romanovsky, V.E. 2008. Application of space-based technologies and models to address land-cover/land-use change problems on the Yamal Peninsula, Russia: 2007 field studies along the bioclimate gradient. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May 2. (PDF)
    71. Walker, D.A., Epstein, H.E., Karlejaärvi, E., Kuss, P., Leibman, M.O., Moskalenko, N.G., Matyshak, G.V. 2008. 2007 Expedition to Yamal Peninsula Region, Russia. Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28-30. (Talk)
    72. Walker, D.A., Epstein, H.E., Leibman, M.E., Moskalenko, N.G., Kuss, H.P., Matyshak, G.V., Kaarlejärvi, E., Forbes, B.C., Barbour, E.M. 2008. Data Report of the 2007 Yamal Expedition to Nadym, Laborovaya, and Vaskiny Dachi, Yamal Peninsula Region, Russia. AGC Data Report. (PDF)
    73. Walker, D.A., Epstein, H.E., Romanovsky, V.E., Ping, C.L., Michaelson, G.J., Daanen, R.P., Shur, Y., Peterson, R.A., Krantz, W.B., Raynolds, M.K., Gould, W.A., Gonzalez, G., Nicolsky, D.J., Vonlanthen, C.M., Kade, A.N., Kuss, P., Kelley, A.M., Munger, C.A., Tarnocai, C.T., Matveyeva, N.V., Daniëls, F.J.A. 2008. Arctic patterned-ground ecosystems: A synthesis of field studies and models along a North American Arctic Transect. Journal of Geophysical Research - Biogeosciences, 113:G03S01. doi:10.1029/2007JG000504. (PDF)
    74. Walker, D.A., Epstein, H.E., Welker, J.M. 2008. Introduction to special section on Biocomplexity of Arctic Tundra Ecosystems. Journal of Geophysical Research - Biogeosciences, 113:G03S00. (Permanent link) doi:10.1029/2008JG000740. (PDF)
    75. Walker, D.A., Forbes, B.C., Stammler, F., Kumpula, T., Gubarkov, A., Karlejäarvi, E., Bhat, t.U., Raynolds, M., Romanovsky, V., Kuss, P., Leibman, M., Moskalenko, N., Khomutov, A., Epstein, H., Yu, Q., Jia, J., Comiso, J., Kaplan, J. 2008. Cumulative impacts analysis on the Yamal Peninsula, Russia: A blueprint for a comparative study in Northern Alaska?. 20th Annual Meeting and Arctic Forum. Washington, D.C. 13-15 May . (Poster)
    76. Walker, D.A., Leibman, M.O., Forbes, B.C., Epstein, H.E. 2008. Cumulative effects of rapid climate and land-use changes on the Yamal Peninsula, Russia. Abstract GC52A-07, presented at AGU Fall Meeting. San Francisco, CA, December 15-19, 89:GC52A-07. (Talk)
    77. Walker, D.A., Murray, M. 2008. Linked Response to Rapid Climate Change and Land-Use Change in the Arctic. Human Dimensions of the Arctic. San Francisco, CA December 18. (Talk)
    78. Walker, D.A., Raynolds, M.K., Gould, W.A. 2008. Fred Daniëls, Subzone A, and the North American Arctic Transect. Abhandlungen aus dem Westfälischen Museum für Naturkunde, 70:(3/4):387-400. (PDF)
    79. Yu, Q., Epstein , H. 2008. Modeling Arctic Tundra Vegetation Dynamics in North America and the Yamal Region of Russia. Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28-30. (Talk)
    80. Yu, Q., Epstein, H.E. 2008. Evaluating arctic tundra system resilience to grazing disturbances: a modeling approach. NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, Maryland April 28-May 2. (Poster)
    81. Yu, Q., Epstein, H.E. 2008. Evaluating Arctic tundra system resilience to grazing disturbances: A modeling approach. Abstract EGU2008-A-12154, presented at European Geosciences Union General Assembly 2008. Vienna, Austria, 13 - 18 April, 10:EGU2008-A-12154. (Poster)
  1. 2007

    1. Alcaraz, D., Chuvieco, E., Epstein, H. 2007. Temporal trends in post-fire regeneration patterns of boreal forests using 1km AVHRR NDVI. Abstract B11D-0777, presented at AGU Fall Meeting. San Francisco, CA, December 10-14, 88:5. (Talk)
    2. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C. 2007. Influence of Regional Sea Ice Variability on Arctic Tundra. Abstract Online Proceedings, presented at Seventh International Conference on Global Change: Connection to the Arctic. Fairbanks, Alaska, February 19-20, 76-78. (Poster)
    3. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C. 2007. The relationship between sea ice variability and arctic tundra on the pan-Arctic, regional, and site scales. Abstract U42C-0612, presented at AGU Fall Meeting. San Francisco, CA, December 10, 88:5. (Poster)
    4. Cook, B.I., Bonan, G.B., Levis, S., Epstein, H.E. 2007. Dynamic vegetation amplifies climate model response to snow cover changes. Climate Dynamics .
    5. Daanen, R., Misra, D., Epstein, H.E. 2007. Active-layer hydrology in nonsorted circle ecosystems of the arctic tundra. Vadose Zone Journal, 6(4):694-704.
    6. Daanen, R.P., Misra, D., Epstein, H.E. 2007. Active-layer hydrology in non-sorted circle ecosystems of the Arctic tundra. Vadose Zone Journal, 6:694-704. (Permanent link) (PDF)
    7. Epstein, H.E., Yu, Q., Kaplan, J.O., Lischke, H. 2007. Simulating future changes in arctic and subarctic vegetation. Computing in Science and Engineering, 9(4):12-23. doi:10.1109/MCSE.2007.84. (PDF)
    8. Jia, G.J., Epstein, H.E., Walker, D.A. 2007. Trends of Vegetation Greenness in the Arctic from 1982-2005. Abstract B21A-0041, presented at AGU Fall Meeting. San Francisco, CA, December 10-14, 88:5. (PDF)
    9. Kuss, K., Walker, D.A. 2007. Project for interlinked Flora Arctica and Arctic Vegetation databases. Abstract CAFF Flora Group, presented at Proceedings of the Fourth International Conservation of Arctic Flora and Fauna (CAFF) Flora Group Workshop, Tórshavn, Faroe Islands, May 15-18, 2007. Akureyri, Iceland, , 63-65. (Poster)
    10. Munger, C.A. 2007. Spatial and temporal patterns of vegetation, terrain, and greenness in the Toolik Lake and Upper Kuparuk River region. M.S. Thesis, University of Alaska Fairbanks, 69. (PDF)
    11. Ping, C.L., Kimble, J., Michaelson, G.J., Walker, D.A. 2007. Cryogenesis and Carbon Stores in Arctic Tundra Soils, Alaska. Arctic Science Conference. Anchorage, AK September 24-26. (Talk)
    12. Raynolds, M.K. 2007. The relationship between permafrost characteristics and the distribution of arctic vegetation types. Arctic Science Conference, Arctic AAAS Division Meeting. Anchorage, AK 24-26 September. (PDF)
    13. Raynolds, M.K. 2007. Arctic vegetation: its distribution and characteristics. GLOBE. Fairbanks, AK March 23.
    14. Raynolds, M.K. 2007. Searching for the effects of climate change on arctic vegetation. Science Cafe Fairbanks, AK May 29. (Talk)
    15. Walker, D.A. 2007. The Circumpolar Arctic Vegetation Map and the Arctic Geobotanical Atlas. Fourth International CAFF Flora Group Workshop. Faroe Islands, Denmark May 15-17 . (Talk)
    16. Walker, D.A. 2007. A Circum-Boreal Vegetation Map Inititiative: The U.S. Perspective. Fourth International CAFF Flora Group Workshop. Faroe Islands, Denmark May 15-17. (Talk)
    17. Walker, D.A. 2007. Interactions of climate, sea-ice, land-temperatures carbon, and humans in the Arctic: an overview. Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 4 - 6. (Talk)
    18. Walker, D.A. 2007. Application of Space-based Technologies and Models to Address Land-cover/Land-use Change problems on the Yamal Peninsula, Russia. AGC Annual Report, 15 pp. (PDF)
    19. Walker, D.A. 2007. A Hierarchic Geobotanical Atlas. 41st Alaska Surveying and Mapping Conference. Fairbanks, AK 19-23 March. (Talk)
    20. Walker, D.A. 2007. Collaborative Research: Greening of the Arctic - Synthesis and Models to Examine the Effects of Climate, Sea-ice, and Terrain on Circumpolar Vegetation Change. AGC Annual Report, 8 pp. (PDF)
    21. Walker, D.A. 2007. The Circumpolar Arctic Vegetation Map, the Alaska Arctic Tundra Vegetation Map, and the Arctic Geobotanical Atlas. Proceedings of the Fourth International CAFF Flora Group Workshop, 15:60-62. (CAFF Website) (PDF)
    22. Walker, D.A., Maier, H.A., Barbour, E.M., Balser, A.W., Grimes, J.P., Heinrichs, T.A., Nolan, M., Prokein, P., Pylant, C.L., Raynolds, M.K., Rogan, L.M., Sharpton, V.L., Stahlke, D.L., Vockeroth, S.G. 2007. Legacy IPY Hierarchic GIS Database for the Arctic Observatory at Toolik Lake.. 41st Alaska Surveying and Mapping Conference. Westmark Hotel, Fairbanks, AK 19-23 March. (Poster)
    23. van Bogaert, R., Walker, D.A., Jia, G.J., Grau, O., Hallinger, M., De Dapper, M., Jonasson, C., Callaghan, T.V. 2007. Recent changes in vegetation. in Richter-Menge, J., Jeffries, M.O., Overland, J.E. (eds.) Arctic Report Card 2007. NOAA. pp. 8. (Website) (PDF)
  1. 2006

    1. Barbour, E.M., Walker, D.A., Maier, H.A., Balser, A.W., Grimes, J.P., Heinrichs, T.A., Nolan, M., Prokein, P., Pylant, C.L., Raynolds, M.K., Rogan, L.M., Sharpton, V.L., Stahlke, D.L., Vockeroth, S.G. 2006. Arctic Geobotanical Atlas. Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Poster)
    2. Barreda, J.E., Knudson, J.A., Walker, D.A., Raynolds, M.K., Kade, A.N., Munger, C.A. 2006. Biocomplexity of Patterned Ground Data Report, Dalton Highway, 2001-2005. AGC Data Report, 252 pp. (PDF)
    3. Cook, B.I., Bonan, G.B., Levis, S., Epstein, H.E., Smith, T.M. 2006. Amplification of climate model response to snow cover fraction parameterization through dynamic vegetation. Abstract C21C-1181, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C21C-1181. (Talk)
    4. Daanen, R.P., Misra, D., Epstein, H.E., Walker, D.A. 2006. Modeling hydrology-vegetation interactions in non-sorted-circle ecosystems. Abstract C44A-07, presented at AGU Fall Meeting. San Francisco, CA, December 11 - 15, C44A-07.
    5. Daanen, R.P., Peterson, R., Misra, D., Nicolsky, D., Epstein, H.E., Walker, D.A. 2006. Modeling self organization of non-sorted circles. European Geosciences Union General Assembly. Vienna, Austria April 2-7. (Poster)
    6. Epstein, H.E. 2006. Greening of the Arctic: Assessing tundra dynamics with remote sensing and modeling. Earth System Science Partnership Open Science Conference. Beijing, China November 9-12. (Talk)
    7. Epstein, H.E., Kelley, A.M., Walker, D.A., Jia, G.J., Raynolds, M.K. 2006. Regional-scale vegetation dynamics in patterned-ground ecosystems of arctic tundra. Abstract C51A-0396, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C51A-0396. (Talk)
    8. Epstein, H.E., Walker, D.A., Jia, G.J., Kelley, A.M., Raynolds, M.K. 2006. Climate, plant biomass, and NDVI relationships along the full arctic bioclimate gradient. Arctic Forum. Washington, DC May 12. (Poster)
    9. Forbes, B. 2006. Effects of petroleum development on reindeer herding in Northwest Siberia: Combining scientific and traditional knowledge. Earth System Science Partnership. Beijing, China November 9-12. (Talk)
    10. Gould, W.A., González, G., Walker, D.A. 2006. Integrating research and education in a study of biocomplexity in arctic tundra ecosystems: costs, results, and benefits to the research agenda. Abstract C44A-08, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, C44A-08.
    11. Jia, G.J., Epstein, H.E., Walker, D.A. 2006. Spatial heterogeneity of tundra vegetation response to recent temperature changes. Global Change Biology, 12:42-55. (Permanent link) doi:10.1111/j.1365-2486.2005.01079.x. (PDF)
    12. Jia, G.J., Epstein, H.E., Walker, D.A. 2006. Decadal changes of vegetation greenness in the Canadian Arctic. Abstract C51A-0383, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C51A-0383. (Talk)
    13. Kade, A. 2006. Biocomplexity of nonsorted circles in the Low Arctic, Alaska. Thesis, University of Alaska Fairbanks, 245.
    14. Kade, A., Romanovsky, V.E., Walker, D.A. 2006. The N-factor of nonsorted circles along a climate gradient in Arctic Alaska. Permafrost and Periglacial Processes, 17(4):279-289. doi:10.1002/ppp.563. (PDF)
    15. Kelley, A.M., Epstein, H.E., Walker, D.A., Ping, C. 2006. Soil nitrogen transformations associated with small patterned-ground features along the complete arctic bioclimatic gradient. Abstract C51A-0395, presented at AGU Fall Meeting. San Francisco, CA, December 11 - 15, C51A-0395. (Talk)
    16. Kuss, P., Kade, A.N., Vonlanthen, C.M., Raynolds, M.K., Matveyeva, N.V., Daniels, F.J.A., Walker, D.A. 2006. Vegetation differentiation of arctic patterned-ground ecosystems. Abstract C44A-05, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C44A-05.
    17. Maier, H.A., Walker, D.A., Barbour, E.M., Balser, A.W., Grimes, J.P., Heinrichs, T.A., Nolan, M., Prokein, P., Pylant, C.L., Raynolds, M.K., Rogan, L.M., Sharpton, V.L., Stahlke, D.L., Vockeroth, S.G. 2006. Arctic Geobotanical Atlas. 26th Annual ESRI International User Conference. San Diego, CA August 7-12. (Poster)
    18. Michaelson, G.J., Ping, C.L., Epstein, H.E., Kimbel, J.M., Romanovsky, V.E., Tarnocai, C.T., Walker, D.A. 2006. Soil Properties and Patterned Ground Across the North American Arctic Transect. Abstract C51A-0397, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, C51A-0397.
    19. Munger, C.A., Walker, D.A., Raynolds, M.K., Kade, A.N., Vonlanthen, C.M., Kuss, P., Daanen, R.P. 2006. The North American Arctic Transect: baseline vegetation and active layer maps for the IPY. Abstract C51A-0382, presented at AGU Fall Meeting. San Francisco, CA, December 11 - 15, C51A-0382.
    20. Nickolsky, D.J., Romanovsky, V.E., Tipenko, G.S., Walker, D.A., Daanen, R.P., Overduin, P.P. 2006. Modeling reaction of non-sorted circles to changes in climate and vegetation cover. Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Poster)
    21. Raynolds, M.K., Comiso, J.C., Walker, D.A. 2006. Comparison of arctic tundra bioclimate subzones and AVHRR surface temperature, and relationship to NDVI. 9th Bi-Annual Circumpolar Remote Sensing Symposium. Seward, Alaska May 16-19. (Talk)
    22. Raynolds, M.K., Walker, D.A. 2006. Satellite land surface temperatures and tundra vegetation. Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4.
    23. Raynolds, M.K., Walker, D.A., Kade, A.N., Vonlanthen, C.M., Vockeroth, S.G., Munger, C.A., Kuss, H.P. 2006. Aboveground Phytomass of Vegetation Communities Along an Arctic Climate Gradient. Abstract C51A-0385, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C51A-0385. (PDF)
    24. Raynolds, M.K., Walker, D.A., Maier, H.A. 2006. NDVI patterns and phytomass distribution in the circumpolar Arctic. Remote Sensing of Environment, 102:271-281. (Permanent link) doi:10.1016/j.rse.2006.02.016. (PDF)
    25. Richter-Menge, J., Overland, J., Proshutinsky, A., Romanovsky, V., Bengtsson, L., Brigham, L., Dyurgerov, M., Gascard, J.C., Gerland, S., Graversen, R., Hass, C., Karcher, M., Kuhry, P., Maslanik, J., Melling, H., Maslowski, W., Morison, J., Perovich, D., Przybylak, R., Rachold, V., Rigor, I., Shiklomanov, A., Stroeve, J., Walker, D., Walsh, J. 2006. State of the Arctic Report. NOAA/OAR/PMEL. Seattle, WA. NOAA OAR Special Report(2952). 36 . (State of the Arctic) (PDF)
    26. Romanovsky, V., Marchenko, S., Brown, J. 2006. Thermal State of Permafrost (TSP): The US Contribution to the International Network of Permafrost Observatories. NEESPI Focus Center Workshop. Fairbanks, AK April 6-8. (Talk)
    27. Romanovsky, V., Marchenko, S., Duguay, C.R., Walsh, J. 2006. Permafrost dynamics within the Northern Eurasia region and related impacts on surface and sub-surface hydrology. NEESPI Focus Center Workshop. Fairbanks, AK April 6-8. (Talk)
    28. Romanovsky, V.E., Marchenko, S.S., Daanen, R., Nikolsky, D., Sergeev, D.O., Walker, D.A. 2006. Soil climate and frost heave along the permafrost/ecological North American Arctic Transect. Abstract C44A-06, presented at AGU Fall Meeting. San Francisco, CA, December 11 - 15, C44A-06. (Talk)
    29. Romanovsky, V.E., Marchenko, S.S., Grosse, G., Duguay, C.R., Zheleznyak, M.N., Sergeev, D.O. 2006. Monitoring and Modeling of the Northern Eurasia Permafrost Dynamics. Abstract GC21B-04 INVITED, presented at AGU Fall Meeting. San Francisco, CA, December 11-15, 87:52.
    30. Vonlanthen, C.M., Raynolds, M.K., Munger, C.A., Kade, A.N., Walker, D.A. 2006. Biocomplexity of Patterned Ground Isachsen Expedition, July 2005. AGC Data Report, 86 pp. (PDF)
    31. Walker, D., Daanen, R., Epstein, H.E., Gould, W., Gonzalez, G., Kade, A., Kelley, A., Krantz, W., Kuss, J.P., Michaelson, G., Munger, C., Nickolsky, D., Peterson, R., Ping, C., Raynolds, M.K., Romanovsky, V., Tarnocai, C., Vonlanthen, C. 2006. Biocomplexity of Arctic Patterned Ground: A tale of cracking, heaving, and smothering. Abstract C44A-04, presented at AGU Fall Meeting. San Francisco, CA, December 14, 87:C44A-04. (Talk)
    32. Walker, D.A. 2006. Application of space-based technologies and models to address landcover/land-use change problems on the Yamal Peninsula, Russia. NEESPI-CLAC meeting. Fairbanks, AK April 6-8. (Talk)
    33. Walker, D.A. 2006. Greening of the Arctic: an IPY initiative. Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Talk)
    34. Walker, D.A. 2006. Complexity in natural biological ecosystems: Interactions of physical and biological processes in the formation of small patterned-ground features across the Arctic climate gradient. Dynamics of Complex Systems: Common Threads Workshop. Fairbanks, AK July 5-7. (Talk)
    35. Walker, D.A., Bhatt, U.S., Comiso, J.C., Epstein, H.E., Forbes, B.C., Jia, J., Kaplan, J.O., Kofinas, G.P., Leibman, M.O., Maier, H.A., Moskalenko, N.G., Raynolds, M.K., Romanovsky, V.E. 2006. Application of Space-based Technologies and Models to Address Land-cover/Land-use Change Problems on the Yamal Peninsula, Russia. Land Cover, Land Use Change Meeting. College Park, MD October 10-12. (Poster)
    36. Walker, D.A., Daanen, R., Kade, A.N., Michaelson, G.J., Nicolsky, D.J., Peterson, R., Ping, C.L., Munger, C.A., Raynolds, M.K., Romanovsky, V.E., Vonlanthen, C.M., Epstein, H.E., Kelley, A.M., Gould, W.A., Gonzalez, G., Krantz, W.B., Tarnocai, C.T. 2006. Interactions of physical and biological processes in the formation of small patterned-ground features across the arctic climate gradient. Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Talk)
    37. Walker, D.A., Epstein, H.E., Jia, G.J., Bhatt, U.S., Romanovsky, V.E., Comiso, J.C., Kaplan, J.O., Markon, C.J., Leibman, M.E., Moskalenko, N.G., Forbes, B.C., Kofinas, G.P., Tarnocai, C., Ping, C.L., Michaelson, G., Gould, W.A., Maier, H.A., Barbour, E.M., Raynolds, M.K., Munger, C.A., Nolan, M., Prokein, P., Heinrichs, T.A., Grimes, J.P., Sharpton, V.L., Balser, A.W., Kuss, H.P. 2006. Greening of the Arctic: An IPY Initiative. Arctic Forum. Washington, D.C. 25-26 May. (Poster)
    38. Zhurbenko, M.P., Matveeva, N.V., Vonlanthen, C., Walker, D.A., Raynolds, M.K. 2006. Lichens from Ellef Ringnes Island, Canadian Arctic Archipelago. Evansia, 23:(3):69-78. (PDF)
  1. 2005

    1. Afonina, O.M., Raynolds, M.K., Walker, D.A. 2005. On the moss flora of Mould Bay (Prince Patrick Island, Canadian Arctic Archipelago). Arctoa, 14:135-142. (PDF)
    2. Chapin, F.S.I., Sturm, M., Serreze, M.C., McFadden, J.P., Key, J.R., Lloyd, A.H., McGuire, A.D., Rupp, T.S., Lynch, A.H., Schimel, J.P., Beringer, J., Chapman, W.L., Epstein, H.E., Euskirchen, E.S., Hinzman, L.D., Jia, G., Ping, C.-L., Tape, K.D., Thompson, C.D.C., Walker, D.A., Welker, J.M. 2005. Role of land-surface changes in Arctic summer warming. Science, 310:(5748):657-660. (Permanent link) (PDF)
    3. Daanen, R., Misra, D., Epstein, H.E. 2005. Modeling the Hydrology and the Effect of Climate Warming on the Non-Sorted Circle Ecosystem in the Arctic Tundra. Abstract H53C-0477, presented at AGU Fall Meeting. San Francisco, CA, December 5-9. (Poster)
    4. Epstein, H.E., D.A. Walker, G.J. Jia, Kelley, A.M. 2005. Climate, plant biomass, NDVI, and LAI relationships along the full arctic bioclimate gradient. Abstract B33E-1092, presented at AGU Fall Meeting. San Francisco, CA, December 5-9, 86:B33E-1092. (Talk)
    5. Hinzman, L.D., Bettez, N.D., Bolton, W.R., Chapin, F.S., III, Dyurgerov, M.B., Fastie, C.L., Griffith, B., Hollister, R.D., Hope, A., Huntington, H.P., Jensen, A., Jia, G.J., Jorgenson, T., Kane, D.L., Klein, D.R., Kofinas, G., Lynch, A.H., Lloyd, A.H., McGuire, A.D., Nelson, F., Oechel, W.C., Osterkamp, T.E., Racine, H.C., Romanovsky, V.E., Stone, R., Stow, D.A., Sturm, M., Tweedie, C.E., Vourlitis, G.L., Walker, M.D., Walker, D.A., Webber, P.J., Welker, J.M., Winker, K.S., Yoshikawa, K. 2005. Evidence and implications of recent climate change in northern Alaska and other Arctic regions. Climatic Change, 72:251-298. (Abstract) doi:10.1007/s10584-005-5352-2. (PDF)
    6. Jia, G.J., Epstein, H.E., Walker, D.A. 2005. Uneven response of arctic tundra to recent environmental changes. Abstract B33E-1091, presented at AGU Fall Meeting. San Francisco, CA, December 5-9, 86:B33E-1091. (Talk)
    7. Kade, A., D.A. Walker, Romanovsky, V.E. 2005. The N-factor along a climate gradient in patterned-ground ecosystems. 2nd European Conference on Permafrost. Potsdam, Germany June 12 - 16. (Talk)
    8. Kade, A., Walker, D.A., Raynolds, M.K. 2005. Plant communities and soils in cryoturbated tundra along a bioclimate gradient in the Low Arctic, Alaska. Phytocoenologia, 35:(4):761-820. (Abstract) (PDF)
    9. Kade, A., Walker, D.A., Romanovsky, V.E. 2005. The effect of vegetation, soil organic layer and snow on the modified N-factor in patterned-ground ecosystems. Abstract C21C-1135, presented at AGU Fall Meeting. San Francisco, CA, December 5-9, 86:C21C-1135. (Talk)
    10. Kelley, A.M., Epstein, H.E., Walker, D.A. 2005. Soil nitrogen cycling associated with small patterned ground features along a high-latitude temperature gradient in northern Alaska. AGU Fall Meeting. San Francisco, CA, December 5-9, B51A-0193. (B51A-0193). (Talk)
    11. Misra, D., Daanen, R. 2005. Visualizing Frost Boils. Challenges - in science and engineering, 13:(1):18-19, 23. (PDF)
    12. Munger, C.A., Raynolds, M.K., Kade, A.N., Walker, D.A. 2005. Biocomplexity of Patterned Ground: Mould Bay Expedition. AGC Data Report, 62 pp. (PDF)
    13. Nicolsky, D.J., Romanovsky, V.E., Tipenko, G.S., Walker, D.A. 2005. Modeling non-sorted circles along low Arctic climate gradient, Dalton Highway, Alaska. Abstract C31A-07, presented at AGU Fall Meeting. San Francisco, CA, December 5-9, 86:C31A-1107. (Poster)
    14. Ping, C.-L., G.J. Michaelson, Y. Shur, C. Tarnocai, Walker, D.A. 2005. Nonsorted circles and soil formation in Arctic Canada. 2nd European Conference on Permafrost. Potsdam, Germany 12-16 June.
    15. Ping, C.-L., Kimble, J.M., Michaelson, G.J., Tarnocai, C., Walker, D.A. 2005. Carbon stores and their distribution in different arctic ecosystems. 1st Climate and Cryosphere International Science Conference. Beijing, China April 11 - 15. (Talk)
    16. Ping, C.-L., Michaelson, G.J., Kimble, J.M., Walker, D.A. 2005. Soil acidity and exchange properties of cryogenic soils in Arctic Alaska. Journal of Soil Science and Plant Nutrition, 51(5):649-653. (Abstract) doi:10.1111/j.1747-0765.2005.tb00083.x. (PDF)
    17. Ping, C.-L., Michaelson, G.J., Tarnocai, C., Walker, D.A. 2005. Cryogenic features of tundra soils along a bioclimate gradient in arctic Alaska and Canada. Abstract C24A-05, presented at AGU Fall Meeting. San Francisco, CA, December 5-9, 86:C24A-05. (Talk)
    18. Raynolds, M.K. 2005. Addendum to the 2003 Green Cabin, Banks Island Data Report. AGC Data Report, 39 pp. (PDF)
    19. Raynolds, M.K., Walker, D.A., Kade, A.N., Munger, C.A. 2005. Small-scale patterned ground in the Arctic: Maps of vegetation and thaw depth on a north-south transect. Abstract C24A-06, presented at AGU Fall Meeting. San Francisco, CA, December 5-9, 86:C24A. (Talk)
    20. Raynolds, M.K., Walker, D.A., Maier, H.A. 2005. Plant community-level mapping of arctic Alaska based on the Circumpolar Arctic Vegetation Map. Phytocoenologia, 35(4):821-848. (Abstract) doi:10.1127/0340-269X/2005/0035-0821. (PDF)
    21. Riedel, S.M., Epstein, H.E., Walker, D.A. 2005. Biotic controls over spectral reflectance of arctic tundra vegetation. International Journal of Remote Sensing, 26(11):2391-2405. doi:10.1080/01431160512331337754. (PDF)
    22. Riedel, S.M., Epstein, H.E., Walker, D.A., Richardson, D.L., Calef, M.P., Edwards, E., Moody, A. 2005. Spatial and temporal heterogeneity of vegetation properties among four tundra plant communities at Ivotuk, Alaska, USA. Arctic, Antarctic, and Alpine Research, 37(1):25-33. doi:10.1657/1523-0430(2005)037[0025:SATHOV]2.0.CO;2. (PDF)
    23. Sappington, N. 2005. ESRI Map Book, Volume 20. ESRI Press. Redlands, CA. 20 (20). 120 . (ESRI Map Book, Volume 20: Circumpolar Arctic Vegetation) (PDF)
    24. Shur, Y., Ping, C.L., Walker, D.A. 2005. Comprehensive model of frost boils and earth hummocks formation. 2nd European Conference on Permafrost. Potsdam, Germany 12-16 June. (Talk)
    25. Tarnocai, C., Walker, D. 2005. Turf hummocks along a climatic gradient in Arctic Canada: characteristics and development. 2nd European Conference on Permafrost. Potsdam, Germany June 12-16.
    26. Walker, D.A. 2005. Biocomplexity of frost-heave features. University of Alaska Anchorage Complex Systems Group. Anchorage, Alaska March 21. (Talk)
    27. Walker, D.A. 2005. Application of space-based technologies and models to address land-cover/land-use change problems on the Yamal Peninsula, Russia. NEESPI Briefing for IGBP Leadership. San Francisco, CA December 4. (Talk)
    28. Walker, D.A. 2005. Recent changes to arctic tundra vegetation. NOAA State of the Arctic Workshop. Woods Hole, MA October 24-26. (Talk)
    29. Walker, D.A. 2005. Polygenetic origin of small patterned-ground features. Biocomplexity of Frost Boils Modeling Workshop. Fairbanks, AK March 14-16. (Talk)
    30. Walker, D.A. 2005. Biocomplexity of small patterned-ground features: A North American Arctic Transect. Institute of Arctic Biology Seminar. Fairbanks, AK October 28. (Talk)
    31. Walker, D.A. 2005. Biocomplexity of Small Patterned-Ground Ecosystems in the Arctic. AGC Data Report. , 26. (PDF)
    32. Walker, D.A., Daanen, R.P., Epstein, H.E., Gonzalez, G., Gould, W.A., Kade, A.N., Kelley, A.M., Krantz, W.B., Michaelson, G.J., Munger, C.A., Nickolsky, D.J., Peterson, R.A., Ping, C.L., Raynolds, M.K., Romanovsky, V.E., Shur, Y.L., Tarnocai, C.T., Tipenko, G.S., Timling, I., Vonlanthen, C.M. 2005. The North American Arctic Transect: Patterned ground ecosystems across the full arctic bioclimate gradient. Abstract C24A-03, presented at AGU Fall Meeting. San Francisco, CA, December 5-9, 86:C24A-03. (Talk)
    33. Walker, D.A., Elvebakk, A., Talbot, S.S., Daniels, F.J.A. 2005. The Second International Workshop on Circumpolar Vegetation Classification and Mapping: a tribute to Boris A. Yurtsev. Phytocoenologia, 35(4):715-725. (Abstract) doi:10.1127/0340-269X/2005/0035-0715. (PDF)
    34. Walker, D.A., Epstein, H.E., Jia, G.J., Bhatt, U.S., Romanovsky, V., Comiso, J., Kaplan, J., Markon, C.J., Leibman, M.E., Moskalenko, N.G., Forbes, B., Kofinas, G.P., Tarnocai, C.T., Ping, C.L., Maier, H.A., Nolan, M., Prokein, P., Heinrichs, T.A., Grimes, J.P., Raynolds, M.K., Munger, C.A., Sharpton, V.L., Balser, A.W. 2005. Greening of the Arctic: an IPY initiative. ICARP II. Copenhagen, Denmark November 10-12. (Poster)
    35. Walker, D.A., Kade, A.N., Michaelson, G.J., Ping, C.L., Raynolds, M.K., Romanovsky, V.E., Epstein, H.E., Kelley, A.M., Gould, W.A., Gonzalez, G., Krantz, W.B. 2005. Biocomplexity of small periglacial patterned-ground forms: Polygenetic formation of surface forms along the Arctic bioclimate gradient. Biocomplexity in the Environment Awardees Meeting. Arlington, VA March 21 - 23.
    36. Walker, D.A., Raynolds, M.K., Daniëls, F.J.A., Einarsson, E., Elvebakk, A., Gould, W.A., Katenin, A.E., Kholod, S.S., Markon, C.J., Melnikov, E.S., N.G., M., Talbot, S.S., Yurtsev, B.A., CAVM Team 2005. The Circumpolar Arctic Vegetation Map. Journal of Vegetation Science, 16(3):267-282. (Permanent link) doi:10.1658/1100-9233(2005)016[0267:TCAVM]2.0.CO;2. (PDF)
    37. Walker, D.A., Raynolds, M.K., Maier, H.A. 2005. Circumpolar Arctic Vegetation Map: application for a plant-community-level map. Arctic Network Terrestrial Scoping Workshop. Fairbanks, AK April 26 - 28. (Talk)
    38. Zhurbenko, M.P., Laursen, G.A., Walker, D.A. 2005. New and rare lichenicolous fungi and lichens from the North American Arctic. Mycotaxon, 92:201-212. (Abstract) (PDF)
    39. Zhurbenko, M.P., Raynolds, M.K., Walker, D.A., Matveeva, N.V. 2005. Lichens and lichenicolous fungi from the Kolyma delta region, Russian Arctic. Graphis Scripta, 17:27-29. (PDF)
  1. 2004

    1. Chappell, G.G., Brody, B., Webb, P., Chord, J., Romanovsky, V., Tipenko, G. 2004. Virtual Reality Visualization of Permafrost Dynamics Along a Transect Through Northern Alaska. Abstract C43B-0231, presented at AGU Fall Meeting. San Francisco, CA, December 13-17, 85:C43B-0231. (Talk)
    2. Epstein, H.E., Beringer, J., Copass, C., Gould, W., Lloyd, A., Chapin III, F.S., Ping, C.L., Michaelson, G., Rupp, S., Walker, D.A. 2004. The nature of spatial transitions in arctic ecosytems. Journal of Biogeography, 31:1917-1933. (Abstract) doi:10.1111/j.1365-2699.2004.01140.x. (PDF)
    3. Gould, W.A., Walker, D.A., Raynolds, M.K., Daniels, F.J.A., Elvebakk, A., Matveyeva, N. 2004. Variation in plant community composition along topographic and climatic gradients in the Canadian Arctic: results of the CAVM Canadian transect. Second International Workshop on Circumpolar Vegetation Classification and Mapping. Tromsø, Norway June 2-6.
    4. Hinzman, L.D., Bettez, N., Bolton, W.R., Chapin, F.S., III, Dyurgerov, M.B., Fastie, C.L., Griffith, B., Hollister, R.D., Hope, A., Huntington, H.P., Jensen, A.M., Jia, G.J., Jorgensen, T., Kane, D.L., Klein, D.R., Kofinas, G.P., Lynch, A.H., Lloyd, A.H., Nolan, M., Oechel, W.C., Osterkamp, T.E., Racine, C.H., Romanovsky, V.E., Stone, R.S., Stow, D.A., Sturm, M., Tweedie, C.E., Vourlitis, G.L., Walker, M.D., Walker, D.A., Webber, P.J., Welker, J.M., Yoshikawa, K. 2004. Evidence and Implications of Recent Climate Change in Northern Alaska and Other Arctic Regions. Abstract GC51A-1052, presented at AGU Fall Meeting. San Francisco, CA, December 13-17, 85:GC51A-1052. (Talk)
    5. Jia, G.J., Epstein, H.E., Walker, D.A. 2004. Controls over intra-seasonal dynamics of AVHRR NDVI for the Arctic tundra in northern Alaska. International Journal of Remote Sensing, 25(9):1547-1564. doi:10.1080/0143116021000023925. (PDF)
    6. Kade, A., D.A. Walker, Raynolds, M.K. 2004. Classification and ordination of frost-boil ecosystems along a climate gradient in the Low Arctic, Alaska. Second International Workshop on Circumpolar Vegetation Classification and Mapping. Tromsø, Norway June 2-6.
    7. Kelley, A.M., Epstein, H., Walker, D.A. 2004. Role of vegetation and climate in permafrost active layer depth in arctic tundra of Northern Alaska and Canada. Journal of Glaciology and Climatology, 26:269-273. (PDF)
    8. Kuss, P. 2004. Cassiope tetragona - Dryas integrifolia Non-acidic Snowbed Communities Along the Thompson River, Banks Island, Canada. Second International Workshop on Circumpolar Vegetation Classification and Mapping. Tromsø, Norway June 2-6. (Poster)
    9. Munger, C.A., Raynolds, M.K., Walker, D.A. 2004. July 2003 Banks Island Expedition: Vegetation, biomass, NDVI, soil, thaw layer, invertebrates, decomposition, biogeochemistry and turf-hummock studies. AGC Data Report, 72 pp. (PDF)
    10. Nicolsky, D.J., Romanovsky, V.E., Tipenko, G.S., Walker, D.A. 2004. A coupled thermo-mechanical model of differential frost heave. Abstract C13B-0282, presented at AGU Fall Meeting. San Francisco, CA, December 13-17, 85:C13B-0282. (Talk)
    11. Ping, C.L., Jorgensen, T., Shur, Y. 2004. Soil cryogenic structures and their implications for land use in Alaska. Journal of Glaciology and Geocryology, 26:(z1).
    12. Ping, C.L., Swanson, D.K., Clark, M.H. 2004. Cryosols in Alaska. in J. M. Kimble (eds.) Permafrost-affected soils. Springer-Verlag. Heidelberg. pp. 727. (PDF)
    13. Raynolds, M.K., Walker, D.A. 2004. The Circumpolar Arctic Vegetation Map: Analysis of distribution and NDVI of vegetation types. 8th Circumpolar Symposium on Remote Sensing of Polar Environments. Chamonix, France June 8 - 12.
    14. Raynolds, M.K., Walker, D.A., Maier, H.A. 2004. Plant-community-level mapping of Alaska based on the Circumpolar Arctic Vegetation Map. Second International Workshop on Circumpolar Vegetation Classification and Mapping. Tromsø, Norway June 2 - 6.
    15. Raynolds, M.K., Walker, D.A., Martin, C.R. 2004. Biocomplexity of Frost-Boil Ecosystems: Snow Data Report. AGC Data Report, 32 pp. (PDF)
    16. Stow, D.A., Hope, A., D., M., Verbyla, D., Gamon, J., Huemmrich, F., Houston, S., Racine, C., Sturm, M., Tape, K., Hinzman, L., Yoshikawa, K., Tweedie, C., Noyle, B., Silapaswan, C., Douglas, D., Griffith, B., Jia, G., Epstein, H., Walker, D., Daeschner, S., Petersen, A., Zhou, L., Myneni, R. 2004. Remote sensing of vegetation and land-cover change in arctic tundra ecosystems. Remote Sensing of Environment, 89:281-308. (Abstract) doi:10.1016/j.rse.2003.10.018. (PDF)
    17. Tipenko, G.S., Marchenko, S., Romanovsky, V.E., Groshev, V., Sazonova, T. 2004. Spatially Distributed Model of Permafrost Dynamics in Alaska. Abstract C12A-02, presented at AGU Fall Meeting. San Francisco, CA, December 13-17, 85:C12A-02. (Talk)
    18. Walker, D.A. 2004. Greening of the Arctic: A transect to monitor terrestrial change across the full Arctic bioclimate gradient. IPY Workshop. Fairbanks, AK November 29. (Talk)
    19. Walker, D.A., Epstein, H.E., Gould, W.A., Kelley, A.M., Kade, A.N., Knudson, J.A., Krantz, W.B., Michaleson, G., Peterson, R.A., Ping, C.L., Raynolds, M.K., Romanovsky, V.E., Shur, Y.L. 2004. Frost-boil ecosystems: complex interactions between landforms, soils, vegetation, and climate. Permafrost and Periglacial Processes, 15(2):171-188. (Abstract) doi:10.1002/ppp.487. (PDF)
    20. Walker, D.A., Epstein, H.E., Kuss, P., Michaelson, G., Ping, C.L., Raynolds, M.K., Romanovsky, V.E., Tarnocai, C.T. 2004. Interactions of multiple factors for patterned-ground features across the Arctic bioclimate gradient. Abstract C12A-07, presented at AGU Fall Meeting. San Francisco, CA, December 13-17, 85:F424. (Talk)
    21. Walker, D.A., Raynolds, M.K., Maier, H.A., Team, C. 2004. A Vegetation Map of the Arctic Tundra Biome (1:1,750,000 scale): Overview, methods, legend and analysis. Second International Workshop on Circumpolar Vegetation Classification and Mapping. Tromsø, Norway June 2-6.
  1. 2003

    1. Bigelow, N.H., Brubaker, L.B., Edwards, M.E., Harrison, S.E., Prentice, I.C., Anderson, P.M., Andreev, A.A., Bartlein, P.J., Christensen, T.R., Cramer, W., Kaplan, J.O., Lozhkin, A.V., Matveyeva, N.V., Murray, D.F., McGuire, A.D., Razzhivin, Y.Y., Ritchie, J.C., Smith, B., Walker, D.A., Gajewski, K., Wolf, V., Holmqvist, B.H., Igarashi, Y., Kremenetskii, K.V., Paus, A., Pisaric, M.F.J., Volkova, V.S. 2003. Climate change and Arctic ecosystems I: Vegetation changes north of 55° N between the last glacial maximum, mid-Holocene and present. Journal of Geophysical Research, 108(D19). doi:10.1029/2002JD002558. (PDF)
    2. Comiso, J.C. 2003. Warming trends in the Arctic from clear sky satellite observations. Journal of Climate, 16:3498-3510. (Permanent link) (PDF)
    3. Epstein, H.E., Calef, M., Jia, G.J., Chapin, F.S., III, Walker, D.A., Walker, M.D., Starfield, A. 2003. Dynamics of Vegetation and Soils in Arctic Tundra Ecosystems. Field talk. Toolik Field Station, AK June 30. (PDF)
    4. Gonzalez, G. 2003. Biocomplexity of Frost boil Ecosystems: Educational Component. Toolik Field Station, AK June 30 - July 15. (PDF)
    5. Gould, W.A., Gonzalez, G., Walker, D.A. 2003. Integrating research and education in a study of Arctic frost-boil ecosystems. Abstract ED21B-1218, presented at AGU Fall Meeting. San Francisco, CA, December 8 - 12, 84:ED21B-1218. (Talk)
    6. Gould, W.A., Gonzalez, G., Walker, D.A. 2003. Biocomplexity of Frost-boil Ecosystems: Integrating science and education. Biocomplexity in the Environment Awardees Meeting. Arlington, Virginia 14 - 17 September. (Poster)
    7. Gould, W.A., Quijano, A., Gonzalez, G., Walker, D.A. 2003. Variation in frost-boil morphology and associated vegetation characteristics along a climatic gradient. Abstract B31C-0311, presented at AGU FAll Meeting. San Francisco, CA, December 8-12, 84:B31C-0311.
    8. Gould, W.A., Raynolds, M.A., Walker, D.A. 2003. Vegetation, plant biomass, and net primary productivity patterns in the Canadian Arctic. Journal of Geophysical Research, 108(D2):1-14. (Abstract) doi:10.1029/2001JD000948. (PDF)
    9. Gould, W.A., Walker, D.A., Biesboer, D. 2003. Combining research and education: Bioclimatic Zonation along a Canadian Arctic Transect. Arctic, 56:(1):45-54. (Abstract) (PDF)
    10. Jia, G.J., Epstein, H.E., Walker, D.A. 2003. Greening of arctic Alaska, 1981-2001. Geophysical Research Letters, 30(20):1-4. (Abstract) doi:10.1029/2003GL018268. (PDF)
    11. Kade, A., D., W. 2003. Experimental Alteration of Vegetation Canopy and the Effects on Cryoturbation Regime. 54th Arctic Science Conference. Fairbanks, AK 22 - 24 September. (Poster)
    12. Kade, A.N., Walker, D.A. 2003. Experimental Alteration of Plant Canopy and the Effects on Cryoturbation Regime. Field talk. Toolik Field Station, AK June 30. (PDF)
    13. Kade, A.N., Walker, D.A. 2003. Manipulation of vegetation canopy and the effects on cryoturbation regime in Alaskan Arctic tundra. 54th Arctic Science Conference. Fairbanks, AK 22-24 September. (Poster)
    14. Kaplan, J.O., Bigelow, N.H., Prentice, I.C., Harrison, S.P., Bartlein, P.J., Christensen, T.R., Cramer, W., Matveyeva, N.V., McGuire, A.D., Murray, D.F., Razzhivin, V.Y., Smith, B., Walker, D.A., Anderson, P.M., Andreev, A.A., Brubaker, L.B., Edwards, M.E., Lozhkin, L.V. 2003. Climate change and Arctic ecosystems II: Modeling, paleodata-model comparisons, and future projections. Journal of Geophysical Research, 108 (D19). (Abstract) doi:10.1029/2002JD002559. (PDF)
    15. Kelley, A.M., Epstein, H.E. 2003. Plant Community and Nitrogen Cycling in Arctic Frost-Boil Ecosystems. Toolik Field Station, AK June 30 - July 15. (PDF)
    16. Krantz, W.B. 2003. Geophysical Self-Organization as an Indicator of Global Climate Change. Toolik Field Station, AK June 30 - July 15. (PDF)
    17. Michaelson, G.J., Ping, C.L., Walker, D.A. 2003. Biogeochemistry of Soils Associated with Cryptogamic Crusts on Frost Boils. Field talk. Toolik Field Station, AK June 30. (PDF)
    18. Munger, C.A., Walker, D.A. 2003. Vegetation of the upper Kuparuk River region in relationship to glacial geology and surficial geomorphology. 54th Arctic Science Conference. Fairbanks, AK 22-24 September. (Poster)
    19. NRC, Orians, G., Albert, T., Brown, G., Cameron, R., Cochran, P., Gerlach, S., Gramling, R., Gryc, G., Hite, D., Kennicutt II, M., Lachenbruch, A., Lowry, L., L., M., Pielou, C., Sedingr, J., Lindstedt-Siva, K.J., Speer, L., Walker, D.A., NAS, N.A.o.S.-., NRC, N.R.C.-. 2003. Cumulative Environmental Effects of Oil and Gas Activities on Alaska's North Slope (Summary). (PDF)
    20. NRC, Orians, G., Albert, T., Brown, G., Cameron, R., Cochran, P., Gerlach, S., Gramling, R., Gryc, G., Hite, D., Kennicutt II, M., Lachenbruch, A., Lowry, L., L., M., Pielou, C., Sedingr, J., Lindstedt-Siva, K.J., Speer, L., Walker, D.A., NAS, N.A.o.S.-., NRC, N.R.C.-. 2003. Cumulative Environmental Effects of Oil and Gas on the North Slope (Brief). (PDF)
    21. NRC, Orians, G., Albert, T., Brown, G., Cameron, R., Cochran, P., Gerlach, S., Gramling, R., Gryc, G., Hite, D., Kennicutt II, M., Lachenbruch, A., Lowry, L., L., M., Pielou, C., Sedingr, J., Lindstedt-Siva, K.J., Speer, L., Walker, D.A., NAS, N.A.o.S.-., NRC, N.R.C.-. 2003. Cumulative Environmental Effects of Oil and Gas Activities on Alaska's North Slope. National Academies Press. Washington, D.C. 288 . (Website) (PDF)
    22. Nicolsky, D.J., Tipenko, G.S., Romanovsky, V.E. 2003. Developing a numerical model of frost boils dynamics. Abstract C21B-0813, presented at AGU Fall Meeting. San Francisco, CA, December 8-12, 84:C21B-0813.
    23. Peterson, R.A., Krantz, W.B. 2003. A mechanism for differential frost heave and its implications for patterned ground formation. Journal of Glaciology, 49:(164):69-80. (Abstract) (PDF)
    24. Peterson, R.A., Walker, D.A., Romanovsky, V.E., Knudson, J.A., Raynolds, M.K., Krantz, W.B. 2003. A differential frost heave model: cryoturbation-vegetation interactions. Abstract Complete set of PDFs, presented at Proceedings of the Eighth International Conference on Permafrost. Lisse, 21-25 July, 2:885-890. (Talk)
    25. Ping, C.-L., Michaelson, G.J., Overduin, P.P., Stiles, C.A. 2003. Morphogenesis of frost boils in the Galbraith Lake area, arctic Alaska. Eighth International Conference on Permafrost Extended Abstracts. Zurich, Switzerland, July 21 - 25, 2:897-900. (Poster)
    26. Ping, C.L., Michaelson, G.J., Kimbel, J.M., Shur, Y.L., Walker, D.A. 2003. Morphogenesis of Soils Associated with Frost Boils. Field talk. Toolik Field Station, AK June 30. (PDF)
    27. Raynolds, M.K., Burian, J.C., Walker, D.A., Maier, H.A. 2003. Relationship between plant biomass and arctic tundra bioclimate subzones based on the Circumpolar Arctic Vegetation Map. 54th Arctic Science Conference. Fairbanks, AK 22 - 24 September. (Poster)
    28. Raynolds, M.K., Walker, D.A. 2003. Banks Island July 2003 Field Report. AGC Field Report, 19 pp. (PDF)
    29. Romanovsky, V. 2003. Permafrost, Active Layer, Soil Temperature and Moisture, Frost Heave and other Things. Toolik Field Station, AK June 30. (PDF)
    30. Shur, Y.L., Ping, C.L. 2003. The Driving Force of Frost Boils and Hummocks Formation. Abstract C21B-0823, presented at AGU Fall Meeting. San Francisco, CA, December 8-12, 84:C21B-0823. (Talk)
    31. Tarnocai, C. 2003. Banks Island Photos. Toolik Field Station, AK June 30. (PDF)
    32. Tarnocai, C.T. 2003. Geology and Soils. Toolik Field Station, AK June 30. (PDF)
    33. Tarnocai, C.T. 2003. Turf hummocks along the Arctic Bioclimate Gradient: Their characteristics and development. AGC Field Report. , 3. (PDF)
    34. Walker, D.A. 2003. Biocomplexity of frost-boil ecosystems: 2003 Expedition to Banks Island. Institute of Arctic Biology Seminar. Fairbanks, AK 2003. (Talk)
    35. Walker, D.A., Balser, A.W., Maier, H.A., Sharpton, V.L. 2003. Towards a Web-based Arctic Geographic Information System: A hierarchic GIS geobotanical atlas for the Toolik Lake-Kuparuk River region. SEARCH. unknown . (Talk)
    36. Walker, D.A., Epstein, H.E., Jia, J.G., Balser, A.W., Copass, C., Edwards, E.J., Gould, W.A., Hollingsworth, J., Knudson, J., Maier, H.A., Moody, A., Raynolds, M.K. 2003. Phytomass, LAI, and NDVI in northern Alaska: Relationships to summer warmth, soil pH, plant functional types, and extrapolation to the circumpolar Arctic. Journal of Geophysical Research - Atmospheres, 108(d2):8169. (Abstract) doi:10.1029/2001JD000986. (PDF)
    37. Walker, D.A., Hamilton, T.D., Balser, A.W., Anderson, J.A. 2003. Glacial Geology of Toolik Lake and the Upper Kuparuk River Region. University of Alaska Printing Services. Fairbanks, AK. 24 . (Digital data) (PDF)
    38. Walker, D.A., Jia, G.J., Epstein, H.E., Raynolds, M.K., Chapin , F.S., III, Copass, C.D., Hinzman, L.D., Knudson, J.A., Maier, H.A., Michaelson, G.J., Nelson, F., Ping, C.L., Romanovsky, V.E., Shiklomanov, N. 2003. Vegetation-soil-thaw-depth relationships along a low-arctic bioclimate gradient, Alaska: synthesis of information from the ATLAS studies. Permafrost and Periglacial Processes, 14(2):103-123. (Abstract) doi:10.1002/ppp.452. (PDF)
    39. Walker, D.A., Kade, A.N., Michaelson, G., Ping, C.L., Raynolds, M.K., Romanovsky, V.E., Epstein, H.E., Kelley, A.M., Gould, W.A., González, G., Krantz, W.B., Tarnocai, C.T. 2003. Biocomplexity of frost boil ecosystems: 2003 expedition to Banks Island and Prince Patrick Island, Canada. 54th Arctic Science Conference. Fairbanks, Alaska 22 - 24 September. (Talk)
    40. Walker, D.A., Kade, A.N., Michaelson, G.J., Ping, C.L., Raynolds, M.K., Romanovsky, V.E., Epstein, H.E., Kelley, A.M., Gould, W.A., Gonzalez, G., Krantz, W.B., Tarnocai, C.T. 2003. Biocomplexity of Frost-Boil Ecosystems: Models for self-organization across the Arctic Bioclimate Gradient. Biocomplexity in the Environment Awardees Meeting. Arlington, VA 14 - 17 September.
    41. Walker, D.A., Raynolds, M.A., Moskalenko, N.G., Team, C. 2003. A physiognomic-based circumpolar Arctic Vegetation map. Eighth International Conference on Permafrost Extended Abstracts. Zurich, Switzerland, July 21 - 25, 177-178. (Poster)
    42. Walker, D.A., Raynolds, M.K., Maier, H.A. 2003. The Circumpolar Arctic Vegetation Map: A tool for analysis of change in permafrost regions. Abstract C11E-05, presented at AGU Fall Meeting. San Francisco, CA, December 8 - 12, 84:C11E-05. (Talk)
    43. Walker, D.A., Raynolds, M.K., Martin, C.R. 2003. Snow on the Alaska North Slope Grids, April 2003. AGC Data Report, 28 pp. (PDF)
  1. 2002

    1. Cushing, E.E., Walker, D.A., Kade, A.N., Kelley, A.M. 2002. Differences in vegetation and thaw depths of frost boils and interboils of acidic and non-acidic tundra. 53rd Alaska Science Conference of the American Association for the Advancement of Science Arctic Division. Fairbanks, AK September 18-21. (PDF)
    2. Gould, W.A. 2002. Integrating Research and Education: Biocomplexity associated with biogeochemical cycles in arctic frost-boil ecosystems. AGC Field Report. , 10. (PDF)
    3. Gould, W.A., Edlund, S., Zoltai, S., Raynolds, M.K., Walker, D.A., Maier, H.A. 2002. Canadian Arctic vegetation mapping. International Journal of Remote Sensing, 23(21):4597-4609. (Abstract) doi:10.1080/01431160110113962. (PDF)
    4. Gould, W.A., Walker, D.A., Gonzalez, G. 2002. Biocomplexity Western Canadian Transect Reconnaisance. AGC Field Report. , 10. (PDF)
    5. Jia, G.J., Epstein, H.E., Walker, D.A. 2002. Spatial characteristics of AVHRR-NDVI along latitudinal transects in northern Alaska. Journal of Vegetation Science, 13:(3):315-326. (Jstor link) (PDF)
    6. Kade, A.N., Walker, D.A. 2002. Vegetation and Cryoturbation Interactions in Alaskan Arctic Tundra. 53rd Alaska Science Conference of the American Association for the Advancement of Science Arctic Division. Fairbanks, AK September 18-21. (Poster)
    7. Kade, A.N., Walker, D.A. 2002. Experimental investigation of vegetation and cryoturbation interactions in Alaskan arctic tundra. 53rd Arctic Science Conference. Fairbanks, AK 18-21 September. (Poster)
    8. Knudson, J.A., Walker, D.A., Epstein, H.E., Jia, G.J., Raynolds, M.K., Copass, C.D., Edwards, E.J., Hollingsworth, J., Kiesz, L., Moody, A., Wirth, D. 2002. Synthesis of the Effects of the Climate Gradient and Substrate on Vegetation in the Alaskan Arctic at the ATLAS Sites: 1998-2001. ARCSS All-Hands Workshop. Seattle, WA February 20. (Poster)
    9. Kruckeberg, A.R. 2002. Geology and Plant Life: The Effects of Landforms and Rock Types on Plants. Reviewed in Ecoscience, 362.
    10. Litaor, M.I., Seastedt, T.R., Walker, D.A. 2002. Spatial analysis of selected soil attributes across an alpine topographic/snow gradient. Landscape Ecology, 17:71-85. (PDF)
    11. McGuire, A.D., Wirth, C., Apps, M., Beringer, J., Clein, J., Epstein, H., Kicklighter, D.W., Blatti, J., Chapin III, F.S., de Groot, B., Efremov, D., Eugster, W., Fukuda, M., Gower, T., Hinzman, L., Huntley, B., Jia, G.J., Kasischke, E., Melillo, J., Romanovsky, V., Shvidenko, A., Vaganov, E., Walker, D. 2002. Environmental variation, vegetation distribution, carbon dynamics and water/energy exchange at high latitudes. Journal of Vegetation Science, 13:(3):301-314. (BioOne online article) (PDF)
    12. Michaelson, G.J., Ping, C.L., Walker, D.A. 2002. Biogeochemistry of Soils Associated with Cryptogamic Crusts on Frost Boils. Abstract B12A-0778, presented at AGU Fall Meeting. San Francisco, CA, December 6-10, 83:F260.
    13. Ping, C.-L., Michaelson, G.J., Kimble, J., Shur, Y.L., Walker, D.A. 2002. Morphogenesis of soils associated with frost boils. Abstract B12A-0775, presented at AGU Fall Meeting. San Francisco, CA, December 6-10, 83:F259. (PDF)
    14. Raynolds, M.K., Ananjeva, G.V., Drozdov, D.S., Daniëls, F.J.A., Einarsson, E., Elvebakk, A., Gould, W.A., Katenin, A.E., Kholod, S.S., Korostelev, Y.V., Maier, H.A., Markon, C.J., Moskalenko, N., Talbot, S.S., Walker, D.A. 2002. Second Draft of the Circumpolar Arctic Vegetation Map. ARCSS All-Hands Workshop. Seattle, WA February 20. (Talk)
    15. Raynolds, M.K., Martin, C.R., Walker, D.A., Moody, A., Wirth, D., Thayer-Snyder, C. 2002. ATLAS Vegetation Studies: Seward Peninsula, Alaska, 2000: Vegetation, Soil, and Site Information, with Seward Vegetation Map. AGC Data Report, 125 pp. (PDF)
    16. Raynolds, M.K., Walker, D.A. 2002. Draft of the Circumpolar Arctic Vegetation Map. 53rd Arctic Science Conference. Fairbanks, AK September 18-21. (Talk)
    17. Schickhoff, U., Walker, M.D., Walker, D.A. 2002. Riparian willow communities on the Arctic Slope of Alaska and their environmental relationships: A classification and ordination analysis. Phytocoenologia, 32(2):145-204. (Abstract) doi:10.1127/0340-269X/2002/0032-0145. (PDF)
    18. Walker, D.A. 2002. Active-layer-vegetation interactions: The Circumpolar Arctic Vegetation Map and a network of active layer monitoring sites as part of the Biocomplexity in the Environment initiative. Circumpolar Active Layer Monitoring (CALM) Workshop. Lewes, Delaware November 11 - 15. (Talk)
    19. Walker, D.A. 2002. Field Report for Walker ATLAS and Biocomplexity projects. AGC Field Report. , 11. (PDF)
    20. Walker, D.A., Epstein, H.E., Gould, W.A., Krantz, W.B., Tipenko, G., Ping, C.L., Romanovsky, V., Walker, M.D. 2002. Biocomplexity of Frost-boil Ecosystems. Artic Forum. Washington, D. C. May 16-17. (Talk)
    21. Walker, D.A., Epstein, H.E., Gould, W.A., Krantz, W.B., Tipenko, G., Ping, C.L., Romanovsky, V., Walker, M.D. 2002. Biocomplexity of Frost-boil Ecosystems. 53rd Arctic Science Conference. Fairbanks, AK September 18-21. (Talk)
    22. Walker, D.A., Gould, W.A., Maier, H.A., Raynolds, M.K. 2002. The Circumpolar Arctic Vegetation Map: AVHRR-derived base maps, environmental controls, and integrated mapping procedures. International Journal of Remote Sensing, 23(21):4551-4570. (Abstract) doi:10.1080/01431160110113854. (PDF)
    23. Walker, D.A., Jia, G.J., Epstein, H.E., Shiklomanov, N.I., Nelson, F.E., Hinzman, L.D., Romanovsky, V.E. 2002. Vegetation-soil-active layer relationships along a low-arctic bioclimate gradient, Alaska. Abstract B72D-02, presented at AGU Fall Meeting. San Francisco, CA, December 6-10, 83:B72D-02. (Talk)
    24. Walker, D.A., Knudson, J.A. 2002. Biocomplexity of frost boil ecosystems. 53rd Arctic Science Conference. Fairbanks, AK September 18-21. (Talk)
    25. Walker, D.A., Raynolds, M.K., Maier, H.A., Murray, D.F., Markon, C.J., Talbot, S.S., Gould, W.A., Bliss, L.C., Edlund, S.A., Zoltai, S.C., Daniels, F.J.A., Wilhelm, M., Bay, C., Einarsson, E., Gundjonsson, G., Moskalenko, N.G., Ananjeva, G.V., Drozdov, D.S., Konchenko, L.A., Korostelev, Y.V., Melnikov, E., Ponomareva, O.E., Katenin, A.E., Kholod, S.S., Matveyeva, N.V., Safranova, I.N., Shelkunova, R., Yurtsev, B.A., Polezhaev, A.N., Elvebakk, A., Johansen, B.E., Trahan, N.G., Charron, T.M. 2002. Draft of the Circumpolar Arctic Vegetation Map. 53rd Alaska Science Conference of the American Association for the Advancement of Science Arctic Division. Fairbanks, AK September 18-21. (Talk)
    26. Walker, D.A., Raynolds, M.K., Matveyeva, N. 2002. Trip Report Russia ATLAS project. AGC Field Report. , 38. (PDF)
    27. Walker, D.A., V.E. Romanovsky, Krantz, W.B. 2002. Cryoturbation-ecosystem interactions: Field observations and experiments to validate a new model of frost-boil formation and its relevance to climate change. IARC/CIFAR PI Final Results Meeting. Boulder, CO October 20 - 22. (Talk)
    28. Walker, D.A., V.E. Romanovsky, W.B. Krantz, C.L. Ping, R.A. Peterson, M.K. Raynolds, H.E. Epstein, G.J. Jia, Wirth, D.C. 2002. Biocomplexity of frost boil ecosystems on the Arctic Slope, Alaska. 14th Annual Meeting and Arctic Forum. Arlington, VA May 16 - 17. (Talk)
  1. 2001

    1. Epstein, H.E., Chapin, F.S., III, Walker, M.D., Starfield, A.M. 2001. Analyzing the functional type concept in arctic plants using a dynamic vegetation model. Oikos, 95:(2):239-252. (Abstract) (PDF)
    2. Gould, W.A., Raynolds, M.K., Walker, D.A. 2001. Vegetation Characteristics Derived from an Integrated Vegetation Complex Map for the Canadian Arctic. Abstract Abstract, presented at Arctic GIS Workshop. Seattle, WA, 22-24 January. (Poster)
    3. Gould, W.A., Raynolds, M.K., Walker, D.A., Edlund, S.A. 2001. Canadian Arctic vegetation and ecosystem properties. Fourth International Circumpolar Arctic Vegetation Mapping Workshop. Moscow, Russia April 10-13. (Talk)
    4. Jia, G.J., Epstein, H.E., Walker, D.A., Burian, J.C., Maier, H.A., Raynolds, M.K., Riedel, S.M. 2001. Patterns of NDVI in Arctic Tundra from Local to Circumpolar Scales. LAII All Hands Meeting. Salt Lake City, UT 14-17 November. (Poster)
    5. Jones, H.G., Pomeroy, J., Walker, D.A., Hoham, R.W. 2001. Snow Ecology. Cambridge University Press. Cambridge, UK. 378 .
    6. Knudson, J.A., Hollingsworth, J., Maier, H.A., Raynolds, M.K., Walker, D.A. 2001. A framework for a web-based GIS for a circumpolar arctic geobotanical atlas. Arctic GIS Workshop. Seattle, WA 22-24 Jan. (Poster)
    7. Pomeroy, J.W., Hoeller, P., Marsh, P., Walker, D.A., Williams, M.W. 2001. Snow vegetation interactions: Issues for a new initiative. in A.J. Dolman, A.J. Hall, M.L. Kavvas, T. Oki, J.W. Pomeroy (eds.) Soil, Vegetation, Atmosphere Transfer Schemes and Large Scale Hydrological Models. IAHS Press. Wallingford, UK. (IAHS Publ. No. 270). pp. 299-306.
    8. Raynolds, M.K., Ananjeva, G.V., Drozdov, D.S., Daniels, F.J.A., Einarsson, E., Elvebakk, A., Gould, W.A., Katenin, A.E., Kholod, S.S., Korostelev, Y.V., Maier, H.A., Markon, C.J., Moskalenko, N.G., Talbot, S.S., Walker, D.A., Wilhelm, M. 2001. First draft of the Circumpolar Arctic Vegetation Map. LAII All Hands Meeting. Salt Lake City, UT 14-17 November .
    9. Raynolds, M.K., Markon, C.J. 2001. Fourth International Circumpolar Arctic Vegetation Mapping Workshop. US Geological Survey Open File Report 02-181. , 98. (PDF)
    10. Raynolds, M.K., Walker, D.A., Gould, W.A., Markon, C.J. 2001. Synthesis of Alaska and Canada. Fourth International Circumpolar Arctic Vegetation Mapping Workshop. Moscow, Russia April 10-13. (Talk)
    11. Walker, D.A. 2001. Circumpolar Arctic Vegetation Map: Plan for Synthesis. unknown. unknown . (Talk)
    12. Walker, D.A. 2001. Welcome, history, progress, and future of the CAVM. Fourth International Circumpolar Arctic Vegetation Mapping Workshop. Moscow, Russia April 10-13. (Talk)
    13. Walker, D.A., Billings, W.D., de Molenaar, J.G. 2001. Snow-vegetation interactions in tundra environments. in H.G. Jones, R.W. Hoham, J.W. Pomeroy, D.A. Walker (eds.) Snow Ecology. Cambridge University Press. Cambridge. pp. 266-324. (Google Books) (PDF)
    14. Walker, D.A., Bockheim, J.G., Chapin, F.S., III, Eugster, W., Nelson, F.E., Ping, C.L. 2001. Calcium-rich tundra, wildlife, and ''the Mammoth Steppe''. Quaternary Science Reviews, 20:149-163. (Permanent link) doi:10.1016/S0277-3791(00)00126-8. (PDF)
    15. Walker, D.A., Burian, J.C., Epstein, H.E., Gould, W.A., Jia, G.J., Maier, H.A., Raynolds, M.K. 2001. Controls on Arctic NDVI Patterns: a Zonal Analysis. Abstract B22C-0176, presented at AGU Fall Meeting. San Francisco, CA, December 10-14, 82:B22C-0176. (Talk)
    16. Walker, M.D., Walker, D.A., Theodose, T.A., Webber, P.J. 2001. Vegetation: hierarchical species-environment relationships. in W.D. Bowman, T.R. Seastedt (eds.) Structure and Function of an Alpine Ecosystem: Niwot Ridge, Colorado. Oxford University Press. New York. pp. 99-127. (PDF)
  1. 2000

    1. Borner, A.P., Walker, M.D. 2000. Effects of snowpack on thaw depth and growth of Salix pulchra at the Toolik Snowfence Experiment and a natural snowbed. ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    2. Chapin, F.S., III, Eugster, W., McFadden, J.P., Lynch, A.H., Walker, D.A. 2000. Summer differences among arctic ecosystems in regional climate forcing. Journal of Climate, 13(12):2002-2010. (Permanent link) doi:10.1175/1520-0442(2000)013<2002:SDAAEI>2.0.CO;2. (PDF)
    3. Copass, C., Beringer, J., McGuire, A.D., Chapin, F.S., III, Walker, D.A. 2000. Characterization of Vegetation Biomass and Structure Along a Gradient from Tundra to Forest at Treeline in Council, Alaska. Abstract B72B-09, presented at AGU Fall Meeting. San Francisco, CA, December 15-19, 81:B72B-09. (Poster)
    4. Edwards, E.J., Moody, A., Walker, D.A. 2000. A western Alaskan transect to examine interactions of climate, substrate, vegetation, and spectral reflectance: ATLAS grids and transects, 1998-1999. NEAML Data Report. , 44 pp. + appendices.
    5. Epstein, H.E., Walker, M.D., Chapin, F.S., III, Starfield, A.M. 2000. A transient, nutrient-based model of arctic plant community response to climatic warming. Ecological Applications, 10(3):824-841. (Permanent link) doi:10.1890/1051-0761(2000)010[0824:ATNBMO]2.0.CO;2. (PDF)
    6. George, S., Hay, B., Knudson, J., Maier, H.A., Nance, K., Raynolds, M.K., Walker, D.A. 2000. The University of Alaska Fairbanks: A member of an Arctic GIS community. Arctic GIS Workshop. Seattle, WA January 22 - 24. (Talk)
    7. Gonzalez, G., Gould, W.A., Raynolds, M.K. 2000. 1999 Canadian transect for the Circumpolar Arctic Vegetation Map. AGC Data Report, 89 pp.
    8. Gould, W.A., D.A. Walker, Raynolds, M.K. 2000. Canadian transect and mapping for the Circumpolar Arctic Vegetation Map. ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    9. Gould, W.A., Raynolds, M.K., Walker, D.A. 2000. Vegetation Characteristics Derived from an Integrated Vegetation Complex Map for the Canadian Arctic. Abstract B72B-13, presented at AGU Fall Meeting. San Francisco, CA, December 15-19, 81:B72B-13.
    10. Gould, W.A., Raynolds, M.K., Walker, D.A., Maier, H.A., Edlund, S.A., Zoltai, S.C. 2000. Canadian arctic vegetation: An integrated vegetation complex map for the Circumpolar Arctic Vegetation Mapping project. 6th Circumpolar Symposium on Remote Sensing of Polar Environments. Yellowknife, NWT, Canada 12-14 May. (Poster)
    11. Jia, G.J., Epstein, H.E., Walker, D.A. 2000. Spatial and intraseasonal characteristics of AVHRR-NDVI for the arctic tundra in northern Alaska. ARCSS LAII Science Workshop. Seattle, WA 23-26 February. (Poster)
    12. Moody, A., Edwards, E.J., Walker, D.A., Epstein, H.E., Jia, G.J., Ping, C.L., Michaelson, G.J., Hinzman, L.D. 2000. A western Alaska transect to examine interactions of climate, substrate, vegetation, and spectral reflectance: ATLAS grids at Barrow, Atqasuk, Oumalik, and Ivotuk, Alaska, 1999. ARCSS LAII Science Workshop. Seattle, WA 23-26 February. (Poster)
    13. Muller, S.V., D.A. Walker, Moody., A. 2000. Accuracy assessment of a MSS-derived landcover map of Northern Alaska. ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    14. Ping, C.L., Michaelson, G.J., Dai, X., Everett, L., Kimble, J.M., Walker, D.A. 2000. Characteristics of Soils Associated With ATLAS Sites in Western Alaska. Abstract B72B-15, presented at AGU Fall Meeting. San Francisco, CA, December 15-19, 81:B72B-15.
    15. Riedel, S.M., Epstein, H.E., Walker, D.A. 2000. Biotic controls on spectral reflectance indices of tundra vegetation. Abstract B71D-11, presented at AGU Fall Meeting. San Francisco, CA, December 15-19, 81:B71D-11.
    16. Riedel, S.M., Epstein, H.E., Walker, D.A., Richardson, D.L., Calef, M.P. 2000. Seasonal variations in NDVI, LAI, and biomass on four tundra vegetation types at Ivotuk, Alaska. ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    17. Walker, D.A. 2000. Hierarchical subdivision of arctic tundra based on vegetation response to climate, parent material, and topography. Global Change Biology, 6(S1):19-34. (Wiley online library) doi:10.1046/j.1365-2486.2000.06010.x. (PDF)
    18. Walker, D.A., Epstein, H.E., Jia, J.G., Edwards, E.J., Moody, A. 2000. Climate, Vegetation, Soil, and Spectral Reflectance Patterns Across Zonal Vegetation Boundaries in Arctic Alaska. Abstract B71F-08, presented at AGU Fall meeting. San Francisco, CA, December 15-19, 81:F223. (Talk)
    19. Walker, D.A., Gould, W.A., Maier, H.A., Raynolds, M.K., Board., C.E. 2000. An AVHRR-image-based Circumpolar Arctic Vegetation Map: A hierarchical approach using image intepretation and integrated mapping methods. ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    20. Walker, D.A., Gould, W.A., Maier, H.A., Raynolds, M.K., Muller, S.V. 2000. The Circumpolar Arctic Vegetation Map: Environmental controls, AVHRR-derived base maps, and integrated mapping procedures. 6th Circumpolar Symposium on Remote Sensing of Polar Environments. Yellowknife, NWT, Canada 12-14 May. (Talk)
    21. Walker, D.A., V.E. Romanovsky, W.B. Krantz, al., e. 2000. Cryoturbation-ecosystem interactions: project overview and first field season results. IARC/CIFAR Principal Investigators Meeting. Fairbanks, AK October 23 - 25. (Poster)
    22. Wielgolaski, F.E. 2000. Polar and Alpine Tundra. Reviewed in Arctic, Antarctic, and Alpine Research, 32:930. (PDF)
  1. 1999

    1. Comiso, J. 1999. Bootstrap sea ice concentrations for NIMBUS-7SMMR and DMSP SSM/I, June to September 2001.
    2. Markon, C.J., Walker, D.A. 1999. Proceedings of the Third International Circumpolar Arctic Vegetation Mapping Workshop. USGS Open File Report No. 99-551. , 79. (PDF)
    3. Mucinal, L., Pignatti, S., Rodwell, J.S., Schaminée, J.H.J., Chytrý, M. 1999. European Vegetation Survey: Case Studies. Reviewed in Journal of Vegetation Science, 10:(1):138. (Jstor link) (PDF)
    4. Muller, S.V., Racoviteanu, A.E., Walker, D.A. 1999. Landsat MSS-derived land-cover map of northern Alaska: extrapolation methods and a comparison with photo-interpreted and AVHRR-derived maps. International Journal of Remote Sensing, 20:2921-2946. (Permanent link) doi:10.1080/014311699211543. (PDF)
    5. Walker, D.A. 1999. An integrated vegetation mapping approach for northern Alaska (1:4 M scale). International Journal of Remote Sensing, 20(15-16):2895-2920. (Permanent link) doi:10.1080/014311699211534. (PDF)
    6. Walker, D.A., Anderson, J.A., Lillie, A.C. 1999. A western Alaska transect to examine interactions of climate, substrate, vegetation, and spectral reflectance: ATLAS grids at Barrow, Atqasuk, and Ivotuk, Alaska, 1998. ARCSS LAII Science Workshop. Seattle, WA March 11-13. (Poster)
    7. Walker, M.D., Walker, D.A., Welker, J.M., Arft, A.M., Bardsley, T., Brooks, P.D., Fahnestock, J.T., Jones, M.H., Losleben, M., Parsons, A.N., Seastedt, T.R., Turner, P.L. 1999. Long-term experimental manipulation of winter snow regime and summer temperature in arctic and alpine tundra. Hydrological Processes, 13:2315-2330. (Abstract) doi:10.1002/(SICI)1099-1085(199910)13:14/15<2315::AID-HYP888>3.0.CO;2-A. (PDF)
  1. 1998

    1. Bockheim, J.G., Walker, D.A., Everett, L.R., Nelson, F.E., Shiklomanov, N.I. 1998. Soils and cryoturbation in moist nonacidic and acidic tundra in the Kuparuk river basin, arctic Alaska, U.S.A.. Arctic and Alpine Research, 30:(2):166-174. (Jstor link) (PDF)
    2. Fahnestock, J.T., Jones, M.H., Brooks, P.D., Walker, D.A., Welker, J.M. 1998. Winter and early spring CO2 efflux from tundra communities of northern Alaska. Journal of Geophysical Research, 103(D22):29,023-29,027. (Permanent link) doi:10.1029/98JD00805. (PDF)
    3. Hobbie, J.E., Kwiatkowski, B.L., Rastetter, E.B., Walker, D.A., McKane, R.B. 1998. Carbon cycling in the Kuparuk basin: plant production, carbon storage, and sensitivity to future changes. Journal of Geophysical Research, 103:(D22):29065-29073. (Abstract) (PDF)
    4. Jones, M.H., Fahnestock, J.T., Walker, D.A., Walker, M.D., Welker, J.M. 1998. Carbon dioxide fluxes in moist and dry arctic tundra during the snow-free season: responses to increases in summer temperature and winter snow accumulation. Arctic and Alpine Research, 30:(4):373-380. (Jstor link) (PDF)
    5. Muller, S.V., Walker, D.A., Nelson, F.E., Auerbach, N., Bockheim, J., Guyer, S., Sherba, D. 1998. Accuracy assessment of a land-cover map of the Kuparuk River basin, Alaska: considerations for remote regions. Photogrammetric Engineering & Remote Sensing, 64:(6):619-628. (Abstract) (PDF)
    6. Nelson, F.E., Hinkel, K.M., Shiklomanov, N.I., Mueller, G.R., Miller, L.L., Walker, D.A. 1998. Active-layer thickness in north central Alaska: Systematic sampling, scale, and spatial autocorrelation. Journal of Geophysical Research, 103:(D22):28963-28973. (Abstract) (PDF)
    7. Ping, C.-L., Bockheim, J.G., Kimble, J.M., Michaelson, G.J., Walker, D.A. 1998. Characteristics of cryogenic soils along a latitudinal transect in Arctic Alaska. Journal of Geophysical Research, 103:(D22):28917-28928. (Abstract) (PDF)
    8. Reeburgh, W.S., King, J.Y., Regli, S.K., Kling, G.W., Auerbach, N.A., Walker, D.A. 1998. A CH4 emission estimate for the Kuparuk River basin, Alaska. Journal of Geophysical Research, 103(D22):29,005-29,013. (Abstract) doi:10.1029/98JD00993. (PDF)
    9. Stow, D., Hope, A., Boynton, W., Phinn, S., Walker, D., Auerbach, N. 1998. Satellite-derived vegetation index and cover type maps for estimating carbon dioxide flux for Arctic tundra regions. Geomorphology, 21:313-327. (Abstract) doi:10.1016/S0169-555X(97)00071-8. (PDF)
    10. Walker, D.A. 1998. Welcome, History, and Goals of the 3rd International Circumpolar Arctic Vegetation Mapping Workshop. 3rd International Circumpolar Arctic Vegetation Mapping Workshop. Anchorage, AK June 3-7. (Talk)
    11. Walker, D.A. 1998. An Integrated Vegetation Map for Northern Alaska: A Prototype for Circumpolar Arctic Vegetation Mapping. 3rd International Circumpolar Arctic Vegetation Mapping Workshop. Anchorage, AK June 3-7. (Talk)
    12. Walker, D.A. 1998. An integrated vegetation mapping approach for the Circumpolar Arctic Vegetation Map. 3rd International Circumpolar Arctic Vegetation Mapping Workshop. Anchorage, AK June 3-7. (Talk)
    13. Walker, D.A., Auerbach, N.A., Bockheim, J.G., Chapin, F.S., III, Eugster, W., King, J.Y., McFadden, J.P., Michaelson, G.J., Nelson, F.E., Oechel, W.C., Ping, C.L., Reeburg, W.S., Regli, S., Shiklomanov, N.I., Vourlitis, G.L. 1998. Energy and trace-gas fluxes across a soil pH boundary in the Arctic. Nature, 394:469-472. (Permanent link) doi:10.1038/28839. (PDF)
    14. Walker, D.A., J.G. Bockheim, F.S. Chapin, W. Eugster, F.E. Nelson, Ping, C.L. 1998. Calcium-rich tundra and its importance to wildlife: Past, present, and future. 49th Annual Arctic Science Conference. Fairbanks, AK October 25 - 28. (Poster)
    15. Walker, D.A., Walker, M.D., Welker, J.M., Arft, A.M., Bardsley, T., Brooks, P.D., Fahnestock, J.T., Jones, M.H., Losleben, M., Parsons, A.N., Seastedt, T.R., Turner, P.L. 1998. Long-term experimental manipulation of winter snow regime and summer temperature in arctic and alpine tundra: An integrated ecosytem approach. International Conference on Snow Hydrology: The integration of physical, chemical, and biological systems. Brownsville, VT 6-9 October. (Talk)
  1. 1997

    1. Auerbach, N.A., Walker, M.D., Walker, D.A. 1997. Effects of roadside disturbance on substrate and vegetation properties in arctic tundra. Ecological Applications, 7(1):218-235. (Jstor link) doi:/10.1890/1051-0761(1997)007[0218:EORDOS]2.0.CO;2. (PDF)
    2. Bockheim, J.G., D.A. Walker, Everett, L.R. 1997. Soil carbon distribution in nonacidic and acidic tundra of Arctic Alaska. in R. Lal, J. M. Kimble, R. F. Follett, B. A. Stewart (eds.) Soil processes and the carbon cycle. CRC Press. Boca Raton, FL. pp. 143-155. (PDF)
    3. Eugster, W., J. P. McFadden, F. S. Chapin III, Walker, D.A. 1997. Importance of Landscape Age and Plant Community Composition for the Surface Energy Budget and Carbon Fluxes in Alaskan Arctic Tundra. Annales Geophysicae, 15:(Supplement II):C356.
    4. Gould, W.A., Walker, M.D., Walker, D.A., Edmands, T., Dornfield, M.A., Auerbach, N.A., Nettleton, T.K., Muller, S.V. 1997. Decade-scale changes in vegetation in the Brooks Range, Southern Alaska Foothills, Alaska. ARCSS LAII Science Workshop. Seattle, WA 27-29 March. (Poster)
    5. Muller, S.V., D.A. Walker, N.A. Auerbach, J. Bockheim, S. Guyer, F. Nelson, Sherba, D. 1997. Accuracy assessment of a landcover map of the Kuparuk River basin, Alaska. ARCSS-LAII Science Workshop. Seattle, WA March 27 - 29. (Poster)
    6. Nelson, F.E., Shiklomanov, N.I., Mueller, G.R., Hinkel, K.M., Walker, D.A., Bockheim, J.G. 1997. Estimating active-layer thickness over a large region: Kuparuk River Basin, Alaska, U.S.A.. Arctic, Antarctic, and Alpine Research, 29:(4):367-378. (Jstor link) (PDF)
    7. Walker, D.A. 1997. A Circumpolar Arctic Vegetation Map: Statement of purpose, plan for action and an early application to Northern Alaska. 40th International Association for Vegetation Science. Ceske Budejowice, Czech Republic 18-23 August.
    8. Walker, D.A. 1997. Moist nonacidic tundra: possible causes and significance to Beringian paleoenvironments. Beringian Paleoenvironments Workshop. Florissant, CO September 20 - 23. (Talk)
    9. Walker, D.A. 1997. Climatic, topographic, and substrate controls over distribution of arctic vegetation. Extrapolation of Arctic and Boreal Processes that Feedback to Climate Workshop. Santa Barbara, CA April 6 - 9. (Talk)
    10. Walker, D.A. 1997. Mapping of northern Alaska: methodology, legend, results, problems. CAVM-North American Workshop. Anchorage, AK January 14 - 16. (Talk)
    11. Walker, D.A. 1997. Arctic Alaskan vegetation disturbance and recovery: a hierarchic approach to the issue of cumulative impacts. in R.M.M. Crawford (eds.) Disturbance and Recovery in Arctic Lands. Kluwer Academic Publishers Publishers. Dordrecht. pp. 457-479. (Purchase book) (PDF)
    12. Walker, D.A., Auerbach, J.G., Bockheim, F.S., Chapin III, W. Eugster, J. McFadden, G.J. Michaelson, F.E. Nelson, C.L. Ping, W.S. Reeburg, S. Regli, Shiklomanov., N.I. 1997. Moist nonacidic tundra: relevance to arctic land-atmosphere fluxes, wildlife, and human dimensions of arctic systems. ARCSS-LAII Science Workshop. Seattle, WA March 27 - 29. (Talk)
    13. Walker, D.A., Auerbach, N.A., Nettleton, T.K., Gallant, A., Murphy, S.M. 1997. Happy Valley Permanent Vegetation Plots. Arctic System Science Flux Study Data Report. (PDF)
    14. Walker, D.A., Elias, S.A., Auerbach, N.A., Short, S.K. 1997. Final Report: Alpine biodiversity, Fort Richardson, Alaska. Legacy Resource Management Program Project DAMD17-93-J-3038. , 66. (PDF)
    15. Walker, D.A., M. D. Walker, A.M. Arft, J.M. Welker, M.H. Jones, J.T. Fahnstock, P.D. Brooks, T.R. Seastedt, A.N. Parsons, Turner, T.L. 1997. Long-term snow-fence experiments to examine effects of altered climate in arctic and alpine tundra. Western Snow Conference and Eastern Snow Conference. Banff, Alberta May 4 - 8. (Poster)
    16. Walker, D.A., N.A. Auerbach, Kohn, M.J. 1997. A circumpolar arctic vegetation map: statement of purpose, plan for international collaboration, and a prototype map for northern Alaska. ARCSS-LAII Science Workshop. Seattle, WA March 27 - 29. (Poster)
    17. Walker, D.A., Talbot, S.S. 1997. Toward a new circumpolar arctic vegetation map. Arctic Research of the United States, 11:80-81.
  1. 1996

    1. Auerbach, N.A., Walker, D.A. 1996. Modern Vegetation Patterns at Barrow and Barter Island: Relevance to Disturbance and Recovery, and Paleoenvironmental Studies. 26th Annual Arctic Workshop. Boulder, CO March 14 - 16. (Poster)
    2. Auerbach, N.A., Walker, D.A. 1996. An electronic hierarchic geobotanical atlas for arctic system science. Abstract Purchase proceedings, presented at Second Circumpolar Arctic Vegetation Mapping Workshop and The CAVM-North American Workshop. Arendal, Norway, and Anchorage, AK, 19-24 May 1996/14-16 January 1997, Occasional Paper No. 52:26-27. (Talk)
    3. Brown, J., F.E. Nelson, D.A. Walker, Marion., G.M. 1996. A Circumpolar Active Layer Monitoring (CALM) Program. Arctic System Science Flux Study Workshop. Seattle, WA February 22 - 24. (Poster)
    4. Duguay, C.R., Walker, D.A. 1996. Environmental modeling and monitoring with GIS: Niwot Ridge Long-Term Ecological Research Site. in M. F. Goodchild, L.T. Steyaert, B.O. Parks, C.A. Johnston, D.R. Maidment, M. Crane, S. Glendinning (eds.) GIS and Environmental Modeling: Progress and Research Issues. GIS World Books. Fort Collins, CO. pp. 219-223.
    5. Elias, S.A., Short, S.K., Walker, D.A., Auerbach, N.A. 1996. Final Report: Historical Biodiversity at Remote Air Force Sites in Alaska. Legacy Resource Management Program Project #0742. , 123. (PDF)
    6. Murray, D.F., Walker, D.A. 1996. ''Tundra'' and the ''Arctic''. Abstract Purchase proceedings, presented at Second Circumpolar Arctic Vegetation Mapping Workshop and The CAVM-North American Workshop. Arendal, Norway and Anchorage, AK, 19-24 May 1996/14-16 January 1997, 52:14-15. (Talk)
    7. Walker, D.A. 1996. Method for making an integrated vegetation map of northern Alaska (1:4,000,000 scale). Abstract Purchase proceedings, presented at Second Circumpolar Arctic Vegetation Mapping Workshop and The CAVM-North American Workshop. Arendal, Norway and Anchorage, AK, 19-24 May 1996/14-16 January 1997, 52:54-61. (Talk)
    8. Walker, D.A. 1996. Progress since the first CAVM workshop and goals of the second. Abstract Purchase proceedings, presented at Second Circumpolar Arctic Vegetation Mapping Workshop and The CAVM-North American Workshop. Arendal, Norway, and Anchorage, AK, 19-24 May 1996/14-16 January 1997, Occasional Paper No. 52:1-6. (Talk)
    9. Walker, D.A. 1996. Disturbance and recovery of Arctic Alaskan vegetation. in J.F. Reynolds, J.D. Tenhunen (eds.) Landscape Function and Disturbance in Arctic Tundra. Springer-Verlag. Berlin Heidelberg. pp. 35-71. (Purchase book) (PDF)
    10. Walker, D.A., Auerbach, N.A., Lestak, L.R., Muller, S.V., Walker, M.D. 1996. A hierarchic GIS for studies of process, pattern, and scale in arctic ecosystems: the Arctic System Science Flux Study, Kuparuk River Basin, Alaska. ESRI ARC/INFO Users' Conference. Palm Springs, CA May 20-24. (Poster)
    11. Walker, D.A., Lillie, A.C. 1996. Proceedings of the Second Circumpolar Arctic Vegetation Mapping Workshop and the CAVM-North American Workshop. Second Circumpolar Arctic Vegetation Mapping Workshop and The CAVM-North American Workshop. 52. (PDF)
    12. Walker, D.A., M. D. Walker, N.A. Auerbach, L.R. Lestak, Muller., S. 1996. A Landsat-derived landcover map of the Kuparuk River Basin, Alaska: a component of hierarchic GIS for the study of arctic land-atmosphere interactions.. Arctic System Science Flux Study Workshop. Seattle, WA February 22 - 24. (Poster)
    13. Walker, D.A., Markon, C.J. 1996. Circumpolar arctic vegetation mapping workshop: abstracts and short papers. USGS Open File Report No. 96-251. , 121. (PDF)
    14. Walker, D.A., N.A. Auerbach, J.G. Bockheim, C.-L. Ping, G. Michaelson, F.E. Nelson, N.I. Shiklomanov, G.R. Mueller, F.S. Chapin III, W. Eugster, J. McFadden, K.R. Everett, L. Everett, K. Hinkel, L. Miller, W.S. Reeburgh 1996. Studies of process, pattern and scale in arctic ecosystems. AGU Fall Meeting. San Francisco, CA, December 13-16. (Talk)
    15. Walker, D.A., Walker, M.D. 1996. Terrain and vegetation of the Imnavait Creek Watershed. in J. F. Reynolds, J. D. Tenhunen (eds.) Landscape Function: Implications for Ecosystem Disturbance, a Case Study in Arctic Tundra. Springer-Verlag. New York. 120 pp. 73-108. (Purchase book) (PDF)
    16. Walker, D.A., Walker, M.D., Auerbach, N.A., Lestak, L.R., Muller, S.V. 1996. A Hierarchic GIS for Studies of Process, Pattern and Scale for the Kuparuk River Basin: a contribution to the Arctic System Science (ARCSS) Flux Study. 26th Annual Arctic Workshop. Boulder, CO 14-16 March. (Poster)
    17. Walker, D.A., and S.S. Talbot 1996. Progress toward circumpolar arctic vegetation mapping. Alaska Surveying and Mapping Conference. Anchorage, Alaska February 5 - 9.
    18. Walker, M.D., Everett, K.R., Walker, D.A., Birkland, P.W. 1996. Soil development as an indicator of relative pingo age, Northern Alaska, U.S.A.. Arctic and Alpine Research, 28:(3):352-362. (Jstor link) (PDF)
  1. 1995

    1. Brooks, P.D., Williams, M.K., Walker, D.A., Schmidt, S.K. 1995. The Niwot Ridge snowfence experiment: biogeochemical responses to changes in the seasonal snowpack. International Association of Hydrological Sciences, 228:293-302. (PDF)
    2. Brown, J., F.E. Nelson, Walker, D.A. 1995. Circumarctic active layer monitoring (CALM): an international contribution to ITEX. 6th International Tundra Experiment (ITEX) Workshop. Ottawa, Canada April 7 - 11. (Talk)
    3. Comiso, J. 1995. SSM/I sea ice concentrations using the bootstrap algorithm. NASA Techical Report NAS 1.15:111234; NASA-TM-111234. , 53. (PDF)
    4. Elias, S.A., Short, S.K., Walker, D.A., Auerbach, N.A. 1995. Historical biodiversity, DEW line stations, Alaska. Legacy Resource Management Program Project #0742. , 58.
    5. Rodwell, J.S., Pignatti, S., Mucina, L., Schaminée, J.H.J. 1995. European vegetation survey: update on progress. Reviewed in Journal of Vegetation Science, 10:(138):759-762.
    6. Shippert, M.M., Walker, D.A., Auerbach, N.A., Lewis, B.E. 1995. Biomass and leaf-area index maps derived from SPOT images for Toolik Lake and Imnavait Creek areas, Alaska. Polar Record, 31(177):147-154. (Abstract) doi:10.1017/S0032247400013644. (PDF)
    7. Svoboda, J., Freedman, B. 1995. Ecology of a Polar Oasis. Reviewed in Arctic and Alpine Research, 286. (PDF)
    8. Walker, D.A. 1995. Toward a new circumpolar arctic vegetation map: St. Petersburg workshop. Arctic and Alpine Research, 31:169-178.
    9. Walker, D.A. 1995. A review of disturbance and recovery of Arctic Alaska vegetation related to oil-field development. Disturbance and Recovery of Arctic Terrestrial Ecosystems workshop. Rovaniemi, Finland September 24 - 30. (Talk)
    10. Walker, D.A., Auerbach, N.A., Shippert, M.M. 1995. NDVI, biomass, and landscape evolution of glaciated terrain in northern Alaska. Polar Record, 31(177):169-178. (Abstract) doi:10.1017/S003224740001367X. (PDF)
    11. Walker, D.A., Bay, C., Daniels, F.J.A., Einarsson, E., Elvebakk, A., Johansen, B.E., Kapitsa, A., Kholod, S.S., Murray, D.F., Talbot, S.S., Yurtsev, B.A., Zoltai, S.C. 1995. Toward a new arctic vegetation map: a review of existing maps. Journal of Vegetation Science, 6(3):427-436. (Abstract) doi:10.2307/3236242. (PDF)
    12. Walker, D.A., M. D. Walker, N.A. Auerbach, L.R. Lestak, B.E. Lewis, D.S. Schimel, Shippert, M.M. 1995. A hierarchic GIS for studies of process, pattern and scale in arctic ecosytems. ARCSS-LAII Science Workshop. Orcas Island, Washington March 1 - 5. (Talk)
    13. Walker, D.A., M. Walker, N. Auerbach, L. Lestak, B. Lewis, Rose, K. 1995. A vegetation map of the upper Kuparuk River region, Alaska: a component of a hierarchic GIS for studies of arctic land-atmosphere interactions. Tenth Annual ESRI European User Conference. Palm Springs, CA May 22 - 26.
    14. Walker, D.A., N. Auerbach, M. Walker, J. Brown, K. Everett, L. Hinzman, F. Nelson, Moskolenko, N. 1995. Monitoring change in arctic terrestrial ecosystems at multiple scales. Workshop to define research priorities for Russian Arctic land-shelf systems. Columbus, OH, January 10-12, 118-120. (Talk)
    15. Walker, D.A., Walker, M.D., Welker, J.M., Parsons, A.N., Seastedt, T.R., Lewis, B.E., Brooks, P.D. 1995. Long-term snow-fence experiments to examine effects of altered winter precipitation regimes in arctic and alpine tundra. Bulletin of the Ecological Society of America, 76:(2):276.
    16. Walker, M.D. 1995. Patterns and causes of arctic plant community diversity. in F.S. III Chapin, C. Körner (eds.) Arctic and alpine biodiversity: patterns, causes, and ecosystem consequences. Springer-Verlag. Berlin. 113 pp. 3-20. (PDF)
    17. Walker, M.D., Walker, D.A., Everett, K.R. 1995. Pingos as models of arctic landscape development. Bulletin of the Ecological Society of America, 76:(2):276.
    18. Welker, J.M., Parsons, A.N., Walker, M.D., Walker, D.A., Seastedt, T.R., Robinson, C.H., Wookey, P.A. 1995. Comparative responses of Dryas octopetala to simulated changes in climate from alpine, low- and high- arctic ITEX sites. Bulletin of the Ecological Society of America, 76:(2):281.
    19. Weller, G., Chapin, F.S., III, Everett, K.R., Hobbie, J.E., Kane, D.L., Oechel, W.C., Ping, C.L., Reeburgh, W.S., Walker, D.A., Walsh, J. 1995. The Arctic Flux Study: a regional view of trace gas release. Journal of Biogeography, 22:(2/3):365-374. (Jstor link) (PDF)
    20. Zhurbenko, M., Santesson, R., Walker, D.A., Auerbach, N.A., Lewis, B. 1995. New and interesting lichenicolous fungi and lichens from Alaska. Evansia, 12:92-97.
  1. 1994

    1. Auerbach, N.A., Moskalenko, N.G., Walker, D.A. 1994. Barrow DEW Line Station, Alaska, Vegetation transect study. DOD Data Report. (Legacy Management Program), 37.
    2. Brooks, P., Williams, M.W., Walker, D.A., Schmidt, S.K. 1994. Nitrous oxide and carbon dioxide flux from snow covered soils: responses to changes in precipitation and temperature. AGU Fall Meeting. San Francisco, December 5 - 9. (Poster)
    3. Everett, K.R., Brown, J., Walker, D.A., Webber, P.J. 1994. Long-term natural recovery of development related disturbances in northern Alaska. The industrial development of the North and problem of recultivation. Syktyvkar, USSR, July 8-14.
    4. Jones, H.G., Pomeroy, J.W., Walker, D.A., Wharton, R.A. 1994. Snow ecology: a report on a new initiative. Arctic and Alpine Research, 26:(2):195-196. (Permanent link) (PDF)
    5. Jones, H.G., Pomeroy, J.W., Walker, D.A., Wharton, R.A. 1994. Snow Ecology: A Report on a New Initiative. Bulletin of the Ecological Society of America, 75:(1):29-31. (Permanent link) (PDF)
    6. Lewis, B.E., Walker, D.A. 1994. Vegetation survey, Fort Richardson, Alaska. Alpine Biodiversity Project, 1993.
    7. Shippert, M.M., D.A. Walker, N.A. Auerbach, B.E. Lewis 1994. Regional biomass and leaf-area estimates derived from satellite imagery as inputs to spatial trace-gas models for arctic tundra. Annual Ecological Society of America (ESA) Meeting: science and public policy, 75:(2):211. (Abstract)
    8. Shippert, M.M., Walker, D.A., Auerbach, N.A. 1994. Biomass and leaf-area index maps derived from SPOT images for the Toolik Lake and Imnavait Creek area, Alaska. Third Circumpolar Symposium on Remote Sensing of Arctic Environments. Fairbanks, AK 16-20 May. (Talk)
    9. Suding, P.W., Krantz, W.B., Walker, D.A., Lewis, B.E. 1994. Field Study of the Effect of Increased Snow Depth on Frost Penetration. 70th Annual Meeting of the Southwestern and Rocky Mountain Division of the American Association for the Advancement of Science. Durango, Colorado May 22 - 26. (Talk)
    10. Walker, D.A. 1994. Information: Toward a new arctic vegetation map: St. Petersburg workshop. Arctic and Alpine Research, 27:103-104. (Talk)
    11. Walker, D.A. 1994. Background and goals of the Circumpolar Arctic Vegetation Mapping Workshop. Circumpolar Arctic Vegetation Mapping Workshop. Komarov Botanical Institute, St. Petersburg, Russia March 21-25. (Talk)
    12. Walker, D.A. 1994. A hierarchic geographic information system for northern Alaska: insights toward a circumpolar arctic vegetation map. Circumpolar Arctic Vegetation Mapping Workshop. Komarov Botanical Institute, St. Petersburg, Russia March 21-25. (Talk)
    13. Walker, D.A., Auerbach, N.A., Lewis, B.E., Shippert, M.M. 1994. Remote sensing of acid and nonacid tundra regions in northern Alaska and relevance to arctic landscape succession. Third Circumpolar Symposium on Remote Sensing of Arctic Environments. Fairbanks, Alaska May 16-20. (Talk)
    14. Walker, D.A., M. D. Walker, L.R. Lestak, K.R. Everett, Webber, P.J. 1994. Application of geographic information systems to the problem of cumulative impacts in the Prudhoe Bay Oil Field, Alaska. Abstract Full proceedings, presented at The industrial development of the North and problem of recultivation. Syktyvkar, USSR, July 8-14, 1991, 151. (Talk)
    15. Walker, M.D., Walker, D.A., Auerbach, N.A. 1994. Plant communities of a tussock tundra landscape in the Brooks Range Foothills, Alaska. Journal of Vegetation Science, 5:(6):843-866. (Jstor link) (PDF)
  1. 1993

    1. Duguay, C.R., Walker, D.A. 1993. Environmental modeling and monitoring at the Niwot LTER site: an overview of recent research activities using GIS. Second International Conference/Workshop on Integrating Geographic Information Systems and Environmental Modeling. Breckenridge, CO, September. (Talk)
    2. Lewis, B.E., E.T. Price, Walker, D.A. 1993. A snow fence experiment to examine long-term ecosystem response to altered snow regimes in the Colorado alpine. Bulletin of the Ecological Society of America, 74:(2):328-329.
    3. Price, E.T., Krantz, W.B., Walker, D.A. 1993. Thermal characteristics and frost penetration rate of alpine soils with diffrential snow cover. Southwestern and Rocky Mountain Division, AAAS 69th annual meeting. Albuquerque, NM May 23 - 27.
    4. Walker, D.A. 1993. Long-term research in the alpine: overview of the Long-Term Ecological Resarch (LTER) project and the International Tundra Experiment (ITEX). Wildlife Institute of India. Dehradun, India October 21. (Talk)
    5. Walker, D.A. 1993. Hierarchic geographic information systems: applications to alpine research, disturbance studies, and climate change. Wildlife Institute of India. Dehradun, India October 21. (Talk)
    6. Walker, D.A., Auerbach, N.A., Everett, K.R., Shippert, M.M., Walker, M.D. 1993. Large-scale disturbance features in northern Alaska affect regional carbon budgets. Bulletin of the Ecological Society of America, 74:(2):475.
    7. Walker, D.A., Halfpenny, J.C., Walker, M.D., Wessman, C. 1993. Long-term studies of snow-vegetation interactions. BioScience, 43:(5):287-301. (Jstor link) (PDF)
    8. Walker, D.A., Krantz, W.B., Lewis, B.L., Price, E.T., Tabler, R.T. 1993. Hierarchic studies of snow-ecosystem interactions: a 100-year snowpack-alteration experiment. Abstract Online Proceedings, presented at Proceedings of the 50th Eastern Snow Conference 61st Western Snow Conference. Quebec City, Quebec, June 8-10, 407-414. (Talk)
    9. Walker, D.A., W.B. Krantz, B.E. Lewis, E.T. Price, R.D. Tabler, M. D. Walker, Wessman, C.A. 1993. Multi-scale studies of snow-vegetation interactions in the alpine zone. International Workshop on Snow Ecology. Quebec City, Canada June 3 - 7. (Talk)
  1. 1992

    1. Coates, P.A. 1992. The Trans-Alaska Pipeline Controversy: Technology, Conservation and the Frontier. Reviewed in Arctic and Alpine Research, 24:(4):363-364. (PDF)
    2. Walker, D.A. 1992. Hierarchical geographic information systems for the Arctic. International workshop on classification of circumpolar arctic vegetation. Boulder, CO March 5 - 9. (Talk)
    3. Walker, D.A., M. D. Walker, N.A. Auerbach, Lestak, L.R. 1992. A Hierarchical GIS for modeling tundra ecosystem processes. 12th Annual ESRI User's Conference. Palm Springs, CA May 20 - 25. (Poster)
    4. Walker, M.D., Walker, D.A. 1992. Classification and gradient analysis of the Brooks Range Foothills, Alaska. International workshop on classification of circumpolar arctic vegetation. Boulder, CO March 5 - 9. (Talk)
  1. 1991

    1. Auerbach, N.A., M. D. Walker, Walker, D.A., Randolph, S. 1991. Effects of road dust disturbance in arctic tundra. 11th Annual ESRI User's Conference. Palm Springs, CA May 20 - 25. (Poster)
    2. Auerbach, N.A., Walker, M.D., Walker, D.A. 1991. Road dust disturbance in arctic tundra soils and vegetation, Alaska, USA. 21st Arctic Workshop, Alaska Quaternary Center. Fairbanks, AK . (Poster)
    3. Auerbach, N.A., Walker, M.D., Walker, D.A. 1991. Road dust disturbance in arctic tundra soils and vegetation, Alaska, USA. 42nd Annual Arctic Science Conference. Fairbanks, AK May 14-15. (Talk)
    4. Walker, D.A., Barry, N. 1991. Toolik Lake permanent vegetation plots: site factors, soil physical and chemical properties, plant species cover, photographs, and soil descriptions. R4D Program Data Report, 110 pp. (PDF)
    5. Walker, D.A., Everett, K.R. 1991. Loess ecosystems of northern Alaska: regional gradient and toposequence at Prudhoe Bay. Ecological Monographs, 61:(4):437-464. (Permanent link) (PDF)
    6. Walker, D.A., N.D. Lederer, L.R. Lestak, E. Binnian, Nordstrand, E.A. 1991. Prudhoe Bay Oil Field, Arco Base Camp, Geobotany and Cumulative Impacts. 11th Annual ESRI User's Conference. Palm Springs, CA May 20 - 25. (Poster)
    7. Walker, D.A., N.D. Lederer, Lestak, L.R. 1991. Niwot Ridge/Green Lakes Valley LTER Site. 11th Annual ESRI User's Conference. Palm Springs, CA May 20 - 25. (Poster)
    8. Walker, D.A., Walker, M.D. 1991. History and pattern of disturbance in Alaskan Arctic terrestrial ecosystems: A hierarchical approach to analysing landscape change. Journal of Applied Ecology, 28:(1):244-276. (Jstor link) (PDF)
    9. Walker, D.A., Walker, M.D. 1991. Hierarchical GIS for analyzing ecosystem processes and climate change in the Alaskan Arctic. 21st Arctic Workshop, Mesoscale Modeling. Fairbanks, AK May 16 - 18. (Talk)
    10. Walker, D.A., Walker, M.D., Auerbach, N.A., Lestak, L.R. 1991. A Hierarchical GIS for modeling tundra ecosystem processes. First International Conference/ Workshop on Integrating Geographic Information Systems and Environmental Modeling. Boulder, CO 15-19 September. (Poster)
    11. Walker, M.D., Walker, D.A. 1991. Toward a circumpolar vegetation classification system. 42nd Annual Arctic Science Conference. Fairbanks, AK May 14 - 15. (Talk)
    12. Walker, M.D., Walker, D.A., Everett, K.R., Short, S.K. 1991. Steppe vegetation on south-facing slopes of pingos, central Arctic Coastal Plain, Alaska, U.S.A.. Arctic and Alpine Research, 23:170-188. (Jstor link) (PDF)
  1. 1990

    1. Auerbach, N.A., Walker, M.D., Walker, D.A., Lestak, L.R. 1990. Cumulative impact of road dust on arctic tundra: interactions among species composition, dust chemistry, and soil pH. 19th Annual Arctic Workshop. Boulder, CO March 8 - 10.
    2. Slaughter, C.W., Racine, C.H., Walker, D.A., Johnson, L.A., Abele, G. 1990. Use of off-road vehicles and mitigation of effects in Alaska permafrost environments: a review. Environmental Management, 14:63-72. (Permanent link) doi:10.1007/BF02394020. (PDF)
    3. Walker, D.A. 1990. Loess ecosystems in northern Alaska. 75th Annual Ecological Society of America Meeting. Snowbird, UT July 29 - August 2. (Talk)
    4. Walker, D.A., Walker, M.D., Randolph, S.T., Lederer, N.D. 1990. Hierarchical GIS examining long-term landscape change at multiple scales in the Arctic Foothills, Alaska. 19th Annual Arctic Workshop. Boulder, CO March 8 - 10. (Poster)
    5. Walker, D.A., Walker, M.D., Randolph, S.T., Lederer, N.D. 1990. Hierarchical GIS examining long-term landscape change at multiple scales in the Arctic Foothills, Alaska. Faculty Symposium on Global Change. Boulder, CO 13-14 September. (Poster)
    6. Walker, D.A., Walker, M.D., Randolph, S.T., Lederer, N.D. 1990. Hierarchical GIS examining long-term landscape change at multiple scales in the Arctic Foothills, Alaska. International ESRI User's Conference. Palm Springs, CA 14-18 May. (Poster)
    7. Walker, D.A., Walker, M.D., Randolph, S.T., Lederer, N.D. 1990. Hierarchical GIS examining long-term landscape change at multiple scales in the Arctic Foothills, Alaska. Long-Term Ecological Research Program All Scientist Meeting. Estes Park, CO 26-29 September. (Poster)
    8. Walker, M.D. 1990. Vegetation and floristics of pingos, Central Arctic Coastal Plain, Alaska. J. Cramer. Stuttgart, Germany. 149. 283 . (Purchase book) (PDF)
  1. 1989

    1. Chapin, F.S., III 1989. Research in Arctic Life and Earth Sciences. Present Life and Future Perspectives. Reviewed in Arctic and Alpine Research, 21:(1):103-104. (Jstor link) (PDF)
    2. Evans, B.M., Walker, D.A., Benson, C.S., Nordstrand, E.A., Petersen, G.W. 1989. Spatial interrelationships between terrain, snow distribution and vegetation patterns at an arctic foothills site in Alaska. Holarctic Ecology, 12:270-278. (Jstor link) (PDF)
    3. Sonesson, M. 1989. Research in Arctic life and earth sciences: present knowledge and future perspectives. Reviewed in Arctic and Alpine Research, 21:(1):103-104. (Jstor link) (PDF)
    4. Walker, D.A. 1989. Loess ecosystems of northern Alaska. Ecosystem Center, Marine Biological Laboratory. Woods Hole, MA May 17. (Talk)
    5. Walker, D.A. 1989. A hierarchical approach to analyzing landscape change. LTER GIS training session. Boulder, CO September 23. (Talk)
    6. Walker, D.A. 1989. A hierarchical GIS approach to examine natural and anthropogenic disturbance in the Alaskan Arctic. Arctic Division of AAAS. Fairbanks, AK September. (Talk)
    7. Walker, D.A., Binnian, E., Evans, B.M., Lederer, N.D., Nordstrand, E., Webber, P.J. 1989. Terrain, vegetation and landscape evolution of the R4D research site, Brooks Range Foothills, Alaska. Holarctic Ecology, 12:(3):238-261. (Jstor link) (PDF)
    8. Walker, D.A., J.C. Halfpenny, L.D. Lederer, M. D. Walker, L. Ayers, Wessman, C.A. 1989. A hierarchical GIS to examine long-term snow-biosystem interactions in the Colorado alpine. 1989 ESRI Users Conference. Palm Springs, CA May 22 - 26. (Third place in the Analytical Division of the Poster Competition). (Poster)
    9. Walker, D.A., L.M. Ayers, N.Caine, J.C. Halfpenny, N.D. Lederer, M. D. Walker, Wessman, C.A. 1989. GIS methods for detecting long-term change in the Colorado alpine. Fourth Annual Landscape Ecology Symposium. Fort Collins, CO March 15 - 18. (Talk)
    10. Walker, D.A., L.M. Ayers, N.Caine, J.C. Halfpenny, N.D. Lederer, M. D. Walker, Wessman, C.A. 1989. Cumulative impacts in northern Alaska. Sigma Xi. University of Colorado February 7. (Talk)
    11. Walker, D.A., Lederer, N.D., Walker, M.D., Binnian, E., Everett, K.R., Nordstrand, E., Webber, P.J. 1989. Impacts of petroleum development in the Arctic: Response. Science, 245:764-765. (Jstor link) (PDF)
    12. Walker, M.D., Walker, D.A., Everett, K.R. 1989. Wetland soils and vegetation, Arctic Foothills, Alaska. Biological Report. 7(89), 89.
    13. Wessman, C.A., Ayers, L., Walker, D.A. 1989. Remotely sensed pattern to system process in the Front Range. Program review for the Cooperative Institute for Research in Environmental Sciences. Boulder, CO June 8. (Poster)
    14. Wessman, C.A., Walker, D.A., Walker, M.D. 1989. Remotely sensed pattern to process in the Front Range alpine. Fourth Annual Landscape Ecology Symposium. Fort Collins, CO 15-18 March. (Talk)
  1. 1988

    1. Walker, D.A. 1988. Terrain and vegetation types of the Sagavanirktok Quadrangle, Alaska. NASA-Ames University Consortium Final Report. , 56.
    2. Walker, D.A., Benson, C.S., Evans, B.M. 1988. Application of GIS to spatial analysis of terrain-snow-vegetation interactions. 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
    3. Walker, D.A., Lederer, N.D., Walker, M.D., Nordstrand, E.A., Binnian, E., Evans, B.M., Peterson, G.W., Benson, C.S. 1988. An R4D geographic information system. 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
    4. Walker, D.A., Walker, M.D., Lederer, N.D. 1988. Terrain and vegetation classification of the DOE R4D Imnavait Creek site. 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
    5. Walker, M.D., Walker, D.A., Acevedo, W. 1988. Comparison of community and regional ordinations in the northern Brooks Range foothills. Third Annual Landscape Ecology Symposium; Observations across Scales: Function and Management of Landscapes. Albuquerque, NM 16-19 March. (Talk)
    6. Walker, M.D., Walker, D.A., Acevedo, W. 1988. Vegetation and environmental interactions at two scales on the North Slope of Alaska. 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
    7. Walker, M.D., Walker, D.A., Acevedo, W. 1988. Hierarchical gradient analysis of northern Alaska landscapes: understanding vegetation-environmental interactions at macro- and mesoscales. Final report to NASA Ames Research Center under NASA Ames University Consortium Agreement NCA2-106.
  1. 1987

    1. Evans, B.M., Walker, D.A., Benson, C., Peterson, G., Webber, P.J., Day, R.L., Nordstrand, E. 1987. Use of a multilayered digital database to determine interrelationships between landform geometry, vegetation and climate in an arctic foothills landscape. American Institute of Biological Sciences and Ecological Society of America. Columbus, OH 10-13 August. (Talk)
    2. Walker, D.A. 1987. Height and growth-ring response of Salix lanata ssp. richardsonii along the coastal temperature gradient of northern Alaska. Canadian Journal of Botany, 65(5):988-993. (Abstract) doi:archpress.com/doi/abs/10.1139/b87-136. (PDF)
    3. Walker, D.A., Acevedo, W. 1987. Vegetation and a Landsat-derived land cover map of the Beechey Point Quadrangle, Arctic Coastal Plain, Alaska. CRREL Report 87-5. , 63 (plus Map L-0211).
    4. Walker, D.A., Cate, D., Brown, J., Racine, C. 1987. Disturbance and recovery of arctic Alaskan tundra terrain: a review of recent investigations. CRREL Report 87-11. , 63.
    5. Walker, D.A., Everett, K.R. 1987. Road dust and its environmental impact on Alaskan taiga and tundra. Arctic and Alpine Research, 19:(4):479-489. (Jstor link) (PDF)
    6. Walker, D.A., Lederer, N.D. 1987. Toposequence study: site factors, soil physical and chemical properties and plant species cover. R4D Program Data Report, 29.
    7. Walker, D.A., Lederer, N.D., Walker, M.D. 1987. Permanent vegetation plots (Imnavait Creek): site factors, soil physical and chemical properties, and plant species cover. R4D Program Data Report, 43 pp. (PDF)
    8. Walker, D.A., Webber, P.J., Binnian, E.F., Everett, K.R., Lederer, N.D., Nordstrand, E.A., Walker, M.D. 1987. Cumulative Impacts of Oil Fields on Northern Alaskan Landscapes. Science, 238:(4828):757-761. (Permanent link) (PDF)
    9. Walker, D.A., Webber, P.J., Lederer, N.D., Walker, M.D. 1987. Terrain and vegetation of the Department of Energy R4D research site, Imnavait Creek, Alaska: I. Classification and mapping. R4D Program Data Report. , 40 pages + appendices.
    10. Walker, M.D., Walker, D.A. 1987. Importance of landscape focal points in maintaining regional diversity: a case study of the northern Alaskan pingos. Second Annual Symposium, Regional Association, International Association for Landscape Ecology. Charlotte, NC March 9 - 11. (Talk)
  1. 1986

    1. Olson, R., Hastings, R., Geddes, F. 1986. Northern Ecology and Resource Management: Memorial Essays Honouring Don Gill. Reviewed in Arctic and Alpine Research, 18:(1):127-128.
    2. Slaughter, C.W., Johnson, L.A., Racine, C.H., Walker, D.A., Abele, G. 1986. Environmental response to off-road vehicle (ORV) use in permafrost affected landscapes. Seventh Conference of the Comité Arctique International (Restoration and Vegetation Succession in Circumpolar Lands). Rejkavik, Iceland September 7 - 13. (Poster)
    3. Walker, D.A. 1986. Cumulative impacts in the wetlands of northern Alaska. NASA-Ames. Palo Alto, CA April 15. (Talk)
    4. Walker, D.A. 1986. Use of GIS Technology for examining cumulative impacts in the Prudhoe Bay Oilfield. North Slope Borough. Barrow, AK August 22. (Talk)
    5. Walker, D.A. 1986. Vegetation and Ecology of Northern Alaska. Denver Museum of Natural History. Denver, CO 1986. (Talk)
    6. Walker, D.A. 1986. An automated mapping approach for geobotanical maps of the DOE R4D research site near Toolik Lake, Alaska. 15th Annual Arctic Workshop. Boulder, CO April 24-26. (Poster)
    7. Walker, D.A. 1986. Roadside vegetation changes due to dust. Dalton Highway and Prudhoe Bay Spine Road, Alaska. Seventh Conference of the Comite Arctique International (Restoration and Vegetation Succession in Circumpolar Lands). Reykjavik, Iceland September 7-13. (Poster)
    8. Walker, D.A., Binnian, E.F., Lederer, N.D., Nordstrand, E.A., Meehan, R.H., Walker, M.D., Webber, P.J. 1986. Cumulative landscape impacts in the Prudhoe Bay Oil Field 1949-1983. USFWS Final Report. . (PDF)
    9. Walker, D.A., Webber, P.J., Walker, M.D., Lederer, N.D., Meehan, R.H., Nordstrand, E.A. 1986. Use of geobotanical maps and automated mapping techniques to examine cumulative impacts in the Prudhoe Bay Oilfield, Alaska. Environmental Conservation, 13(2):149-160. (Abstract) doi:10.1017/S0376892900036754. (PDF)
    10. Walker, M.D., Walker, D.A. 1986. Soil and vegetation succession on pingos, central arctic coastal plain, Alaska. Seventh Conference of the Comite Arctique International (Restoration and Vegetation Succession in Circumpolar Lands). Rejkavik, Iceland September 7-13. (Poster)
    11. Webber, P.J., Walker, D.A. 1986. Cumulative impacts and the spread of disturbance in permafrost dominated lands. Seventh Conference of the Comité Arctique International (Restoration and Vegetation Succession in Circumpolar Lands). Reykjavik, Iceland 7-13 September. (Talk)
  1. 1985

    1. Ritchie, J.C. 1985. Past and Present Vegetation of the Far Northwest of Canada. Reviewed in Arctic and Alpine Research, 17:(3):349-350. (PDF)
    2. Walker, D.A. 1985. Vegetation and environmental gradients of the Prudhoe Bay region, Alaska. CRREL Report 85-14. , 240. (PDF)
    3. Walker, D.A. 1985. Illustrated surface-form and vegetation legend for geobotanical mapping of the Arctic Coastal Plain of northern Alaska.
    4. Walker, D.A., Lederer, N.D. 1985. Summer 1983 observations at the Prudhoe Bay experimental seawater spill sites three years after the spills. Attachment I. in P.J. Webber, D. A. Walker, V. Komárková, J.J. Ebersole (eds.) Baseline Monitoring Methods and Sensitivity Analysis of Alaskan Arctic Tundra. Cold Regions Research and Engineering Laboratory. Hanover, NH. pp. 13.
    5. Walker, D.A., Lederer, N.D., Walker, M.D. 1985. Observations at the Prudhoe Bay Rolligon Site seven years following the test. Attachment G. Baseline Monitoring Methods and Sensitivity Analysis of Alaskan Arctic Tundra. .
    6. Walker, D.A., N.D. Lederer, Walker, M.D. 1985. Vegetation changes at permanent transects along the Dalton Highway and the Prudhoe Bay Spine Road. Attachment F. in P.J. Webber, D. A. Walker, V. Komárková, J.J. Ebersole (eds.) Baseline Monitoring Methods and Sensitivity Analysis of Alaskan Arctic Tundra. Cold Regions Research and Engineering Laboratory. Hanover, NH..
    7. Walker, D.A., Walker, M.D., Everett, K.R., Webber, P.J. 1985. Pingos of the Prudhoe Bay region. Arctic and Alpine Research, 17:(3):321-336. (Jstor link) (PDF)
    8. Walker, D.A., Walker, M.D., Lederer, N.D. 1985. 1983 Observations at the Prudhoe Bay and Franklin Bluffs hydrocarbon spill sites. Attachment H. in P.J. Webber, D. A. Walker, V. Komárková, J.J. Ebersole (eds.) Baseline Monitoring Methods and Sensitivity Analysis of Alaskan Arctic Tundra. Cold Regions Research and Engineering Laboratory. Hanover, NH. pp. 22.
    9. Walker, D.A., Walker, M.D., Webber, P.J. 1985. Vegetation analysis of the DOE/R4D research site. R4D Program Data Report.
    10. Walker, D.A., Webber., P.J. 1985. Vegetation analysis and mapping of the R4D research site.
    11. Walker, M.D., Walker, D.A. 1985. The application of detrended correspondence analysis to Landsat-assisted vegetation mapping of the Sagavanirktok Quadrangle, Alaska. Phase I - Ordination of sample sites and vegetation sites.
    12. Webber, P.J., Walker, D.A., Komárková, V., Ebersole, J.J. 1985. Baseline monitoring methods and sensitivity analysis of Alaskan arctic tundra.
  1. 1984

    1. Walker, D.A. 1984. Permafrost: Fourth International Conference, Proceedings. Reviewed in Arctic and Alpine Research, 16:(1):127-128. (Jstor link) (PDF)
    2. Walker, D.A., Cate, D., Brown, J. 1984. Disturbance and recovery of Arctic Alaskan tundra terrain: a summary of recent CRREL research. CRREL Report. , 177.
    3. Walker, D.A., Lederer, N.D. 1984. 1984 ground reference data in support of the North Slope Borough's mapping effort in northern Alaska. Final report to the Environmental Systems Research Institute. AGC Final Report. , 83.
    4. Walker, D.A., M. D. Walker, N.D. Lederer, Webber, P.J. 1984. The use of geobotanical maps and automated mapping techniques to study the historical changes in the Prudhoe Bay oil field, Alaska.
    5. Walker, D.A., Walker, M.D., Everett, K.R., Webber, P.J. 1984. The puzzling pingos of Prudhoe Bay. 13th Annual Arctic Workshop. Boulder, CO March 15-17. (Poster)
  1. 1983

    1. Klinger, L.F., Walker, D.A., Walker, M.D., Webber, P.J. 1983. The effects of a gravel road on adjacent tundra vegetation. in U.S. Army Corps of Engineers (eds.) Prudhoe Bay Waterflood Project Environmental Monitoring Program 1982. U.S. Army Corps of Engineers. Anchorage, AK. pp. 162.
    2. Klinger, L.F., Walker, D.A., Webber, P.J. 1983. The effects of gravel roads on Alaskan Arctic Coastal Plain tundra. Fourth International Conference on Permafrost. Fairbanks, AK, 17-22 July, 628-633. (Poster)
    3. Moses, T.A., Walker, D.A. 1983. Chapter 6: Surface hydrology. in D.M. Troy (eds.) Prudhoe Bay Unit-Eileen West End Environmental Studies Program, Summer 1982. LGL Alaska Research Associates, Inc. Fairbanks, AK. pp. 14.
    4. Simmons, C.L., Everett, K.R., Walker, D.A., Linkins, A.E., Webber, P.J. 1983. Sensitivity of plant communities and soil flora to seawater spills, Prudhoe Bay, Alaska. CRREL Report. , 35. (PDF)
    5. Walker, D.A. 1983. A hierarchical tundra vegetation classification especially designed for mapping in northern Alaska. Abstract PDF of all presentations, presented at Fourth International Conference on Permafrost. Fairbanks, AK, 17-22 July, 1332-1337. (Talk)
    6. Walker, D.A., Everett, K.R., Webber, P.J. 1983. Chapter 2: Geobotany. in D.M. Troy (eds.) Prudhoe Bay Unit-Eileen West End Environmental Studies Program, Summer 1982. LGL Research Associates, Inc. Fairbanks, AK. pp. 77.
    7. Walker, D.A., Lederer, N.D. 1983. Vegetation aerial and ground reference data for the Noatak and Kotzebue 1:250,000-scale quadrangles. Report to Environmental Systems Research Institute. , 56.
    8. Walker, D.A., Webber, P.J., Everett, K.R. 1983. 1:63,360-scale geobotanical mapping in the Arctic National Wildlife Refuge. Final report to the U.S. Army Cold Regions Research and Engineering Laboratory.
  1. 1982

    1. Everett, K.R., Walker, D.A. 1982. Annotated and illustrated legend to 1981 SOHIO master maps. SOHIO Alaska Petroleum Co. , 98.
    2. Everett, K.R., Walker, D.A. 1982. Geobotanical reconnaissance of the SOHIO West (Kuparuk Field). Final report for Contract No. 81JL71. SOHIO Alaska Petroleum Co. , 35 plus appendices.
    3. Klinger, L.F., Walker, D.A., Webber, P.J. 1982. The effects of a gravel road on arctic coastal plain tundra. 11th Annual Arctic Workshop. Boulder, CO March 11 - 13. (Poster)
    4. Simmons, C.L., Walker, D.A., Webber, P.J. 1982. Sensitivity of selected plant communities to seawater spills, Prudhoe Bay, Alaska. 11th Annual Arctic Workshop. Boulder, CO March 11 - 13. (Poster)
    5. Walker, D.A., Acevedo, W., Webber, P.J. 1982. A LANDSAT classification and vegetation map of the northern portion of the Arctic National Wildlife Refuge, Alaska. 11th Annual Arctic Workshop. Boulder, CO March 11-13. (Poster)
    6. Walker, D.A., Everett, K.R., Acevedo, W., Gaydos, L., Brown, J., Webber, P.J. 1982. Landsat-assisted environmental mapping in the Arctic National Wildlife Refuge, Alaska. CRREL Report 82-57. , 68.
    7. Walker, D.A., Everett, K.R., Acevedo, W., Gaydos, L., Brown, J., Webber, P.J. 1982. Landsat assisted environmental mapping in the Arctic National Wildlife Refuge, Alaska. in U.S. Fish and Wildlife Service (eds.) Draft environmental impact statement and draft regulations for the proposed oil and gas exploration within the coastal plain of the Arctic National Wildlife Refuge, Alaska. Department of the Interior. Washington, D.C. pp. 829-890 with 3 maps.
    8. Walker, D.A., Everett, K.R., Webber, P.J., Moses, T.A. 1982. Geobotanical maps and surface hydrology (of the Eileen West End Development, Prudhoe Bay, AK). Final report to LGL Research Assoc., Inc., Alaska. .
    9. Webber, P.J., Klinger, L.F., Walker, D.A. 1982. The effects of a gravel road on Arctic Coastal Plain tundra (Sect. G). Final report to Woodward-Clyde Consultants, Prudhoe Bay Unit Waterflood Monitoring Program.
  1. 1981

    1. Everett, K.R., Walker, D.A. 1981. The landforms, vegetation and soils of the Sagavanirktok River delta region, Prudhoe Bay, Alaska. Final report for Contract No. 81JL71 to SOHIO Alaska Petroleum Co. SOHIO Alaska Petroleum Co. , 8.
    2. Simmons, C.L., Walker, D.A., Webber, P.J., Everett, K.R. 1981. Sea-water tolerances of selected tundra plants of Prudhoe Bay, Alaska. 10th Annual Arctic Workshop. Boulder, CO March 12-14. (Poster)
    3. Simmons, C.L., Walker, D.A., Webber, P.J., Everett, K.R. 1981. Sea-water sensitivities of selected plant communities of Prudhoe Bay, Alaska. CRREL Progress Report. , 41.
    4. Walker, D.A. 1981. The vegetation and environmental gradients of the Prudhoe Bay region, Alaska. Ph.D. Thesis, University of Colorado, Boulder, 484 (plus 5 maps).
    5. Walker, D.A. 1981. Prudhoe Bay, Alaska. in L.C. Bliss, O.W. Heal, J.J. Moore (eds.) Tundra ecosystems: a comparative analysis. Cambridge University Press. Cambridge, UK. pp. 766-676.
    6. Walker, D.A., Short, S.K., Andrews, J.T., Webber, P.J. 1981. Late Holocene pollen and present-day vegetation, Prudhoe Bay and Atigun River, Alaskan North Slope. Arctic and Alpine Research, 13:(2):153-172. (Jstor link) (PDF)
    7. Walker, D.A., Webber, P.J., Everett, K.R., Brown, J. 1981. Geobotanical mapping of the Prudhoe Bay region, Alaska. 19th Annual Arctic Workshop. Boulder, CO 12-14 March. (Poster)
  1. 1980

    1. Simmons, C.L., Walker, D.A., Webber, P.J. 1980. Sea water tolerances of selected vegetation of Prudhoe Bay, Alaska. CRREL Progress Report, 29 pp.
    2. Walker, D.A. 1980. Haul road mapping. in P.J. Webber (eds.) Vegetation mapping and response to disturbances in northern Alaska. U.S. Army Cold Regions Research and Engineering Laboratory. Hanover, NH. pp. 72.
    3. Walker, D.A., Everett, K.R., Webber, P.J. 1980. Vegetation, soil and landform reconnaissance survey in the Kuparuk Oil Field. ARCO Oil and Gas Co. , 31.
    4. Walker, D.A., Everett, K.R., Webber, P.J., Brown, J. 1980. Geobotanical Atlas of the Prudhoe Bay Region, Alaska. CRREL Report 80-14. , 69.
    5. Walker, D.A., Webber, P.J. 1980. INSTAAR/USGS/CRREL LANDSAT mapping program. CRREL Internal Report. , 52.
    6. Walker, D.A., Webber, P.J. 1980. Master maps and ecological data related to potential impacts of Project Waterflood at Prudhoe Bay, Alaska.
    7. Walker, D.A., Webber, P.J. 1980. Vegetation mapping. Environmental engineering and ecological baseline investigations along the Yukon River-Prudhoe Bay Haul Road. , 45-58.
    8. Walker, D.A., Webber, P.J. 1980. Geobotanical mapping of the SOHIO portion of the Prudhoe Bay Oil Field. SOHIO Alaska Petroleum Co. , 10.
    9. Walker, D.A., Werbe, N. 1980. Dust impacts on vegetation. Environmental engineering and ecological baseline investigations along the Yukon River-Prudhoe Bay Haul Road. , 126-127.
  1. 1979

    1. Walker, D.A., Bowman, K., Webber, P.J. 1979. Summer 1978 observations on Alaska tundra oil spills and rolligon test sites. CRREL Report 591. , 52.
    2. Walker, D.A., Webber, P.J. 1979. Report of Yukon River to Prudhoe Bay vegetation mapping program. CRREL Internal Report. , 186.
    3. Walker, D.A., Webber, P.J. 1979. Relationship of soil acidity and air temperature to the wind and vegetation at Prudhoe Bay, Alaska. Arctic, 32:(3):224-236. (Abstract) (PDF)
    4. Walker, D.A., Webber, P.J. 1979. Salix lanata ssp. richardsonii as a climatic indicator in Northern Alaska. Arctic Workshop. Boulder, CO 4-5 May. (Poster)
    5. Webber, P.J., Komárková, V., Walker, D.A., Werbe, N. 1979. Geobotanical studies along a latitudinal gradient between the Yukon River and Prudhoe Bay, Alaska. CRREL Internal Report. , 366.
  1. 1978

    1. Abele, G., Walker, D.A., Brown, J., Brewer, M.C., Atwood, D.M. 1978. Effects of low ground pressure vehicle traffic on tundra at Lonely, Alaska. CRREL Special Report 78-16. (78-16), 63.
    2. Everett, K.R., Webber, P.J., Walker, D.A., Parkinson, R.J., Brown, J. 1978. A geoecological mapping scheme for Alaskan coastal tundra. Proceedings of the Third International Conference on Permafrost. Edmonton, Alberta, Canada, 10-13 July, 359-365. (PDF)
    3. Walker, D.A., Webber, P.J., Everett, K.R., Brown, J. 1978. Effects of crude and diesel spills on plant communities at Prudhoe Bay, Alaska, and the derivation of oil spill sensitivity maps. Arctic, 31:(3):242-259. (Abstract) (PDF)
  1. 1977

    1. Walker, D.A. 1977. The analysis of the effectiveness of a television scanning densitometer for indicating geobotanical features in an ice-wedge polygon complex at Barrow, Alaska. M.A. Thesis, University of Colorado, Boulder, 129 (plus 2 maps).
    2. Walker, D.A., Everett, K.R., Webber, P.J. 1977. Observations at the Prudhoe Bay rolligon site one year following the test. Attachment G. in P.J. Webber, D.A. Walker, V. Komárková, J.J. Ebersole (eds.) Baseline Monitoring Methods and Sensitivity Analysis of Alaskan Arctic Tundra. Cold Regions Research and Engineering Laboratory. Hanover, NH. pp. 19.
    3. Walker, D.A., Webber, P.J., Everett, K.R., Brown, J. 1977. The effects of low-pressure wheeled vehicles on plant communities and soils at Prudhoe Bay, Alaska. CRREL Special Report 77-17. , 49.
  1. 1976

    1. Walker, D.A., Webber, P.J. 1976. Vegetation mapping of selected sites along the Yukon River-Prudhoe Bay Haul Road, Alaska. CRREL Progress Report. , 46 (plus 10 maps).
    2. Webber, P.J., Walker, D.A., Komárková, V. 1976. Large scale mapping of Alaskan tundra vegetation. 27th Alaska Science Conference. Fairbanks, AK 4-7 August. (Talk)
  1. 1975

    1. Webber, P.J., Walker, D.A. 1975. Vegetation and landscape analysis at Prudhoe Bay, Alaska: a vegetation map of the Tundra Biome study area. in J. Brown (eds.) Ecological investigations of the Tundra Biome in the Prudhoe Bay region, Alaska. University of Alaska Fairbanks. Fairbanks, AK. pp. 81-91. (Permanent link) (PDF)
    2. Webber, P.J., Walker, D.A., Rowley, F. 1975. Gradient analysis of plant growth forms. in J. Brown (eds.) Ecological and limnological reconnaissances from Prudhoe Bay into the Brooks Range, Alaska. pp. 31-35. (PDF)
  1. 1973

    1. Webber, P.J., Walker, D.A. 1973. Vegetation maps of the Gas Arctic Test Site, Prudhoe Bay, Alaska.

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