Alaska Geobotany Center Library

Posters

  1. 2022

    1. Kanevskiy, M., Shur, Y., Walker, D.A., Jones, B.M., Jorgenson, M.T., Watson-Cook, E., Breen, A.L., Bergstedt, H., Daanen, R., Liljedahl, A., Peirce, J.L., Raynolds, M.K., Veremeeva, A. 2022. Ice-wedge Degradation and Stabilization in the Prudhoe Bay Oilfield, Alaska (2011-2022). Presented at AGU Fall Meeting, Chicago, IL, 12-16 December. (Poster)
    2. Peirce, J.L. 2022. Learning by doing: Collaborative practice with the Native Village of Point Lay and regional partners on an NNA Track 1 project. Presented at NNA Community Office Meeting, Anchorage, AK, 15-17 November. (Poster)
    3. Raynolds, M., Bultmann, H., Kasanke, S., Raberg, J. and Miller, G. 2022. Vegetation Response to a Climate Gradient in the Eastern Canadian Arctic. Presented at 16th International Remote Sensing Conference, Fairbanks, AK, 16-20 May. (Poster)
  1. 2021

    1. Landers, Z. 2021. Effects of Ice Rich Permafrost on Infrastructure. National Renewable Energy Laboratory Summer Internship Research Poster Session, 6 August. (Poster)
    2. Sehmel, T. 2021. Potential Mitigation Strategies for Buildings and Infrastructure on Thawing Permafrost. One Health, One Future Conference, Online, 6-11 April. (Poster)
  1. 2019

    1. Kumpula, T., Raynolds, M.K. & Walker, D.A. 2019. Mapping of Cumulative Impacts of Oil and Gas Development in Arctic Alaska and the Yamal Peninsula. Presented at Arctic Science Summit Week, Arkhangelsk, Russia, 22-30 May. (Poster)
    2. Raynolds, M.K., Walker, D.A. & Raster CAVM Team 2019. Russia portion of the new Raster Circumpolar Arctic Vegetation Map (CAVM). Presented at Arctic Science Summit Week, Arkhangelsk, Russia, 22-30 May. (Poster)
    3. Walker, D.A., Epstein, H.E., Sibik, J., Bhatt, U., Romanovsky, V., Breen, A.L., Chasnikova, S., Daanen, R., Druckenmiller, L.A. & (...) Timling, I. 2019. Vegetation along the 1700-km Yamal Peninsula-Franz Josef Land Eurasia Arctic Transect. Presented at Arctic Science Summit Week, Arkhangelsk, Russia, 22-30 May. (Poster)
    4. Walker, D.A., Raynolds, M.K., Breen, A.L., Druckenmiller, L.A., Sibik, J., Epstein, H.E., Byatt, U.S. & Shaepman-Strub, G. 2019. Circumpolar Arctic vegetation classification, mapping, and transects: a framework for Arctic change monitoring and analysis. Presented at Arctic Science Summit Week, Arkhangelsk, Russia, 22-30 May. (Poster)
  1. 2017

    1. Bhatt, U.S., Walker, D.A., Raynolds, M.K. and Epstein, H.E., 2017. Humidification of the Arctic. Effects of more open ocean water on land temperatures and tundra productivity along continental and maritime bioclimate transects (Invited). Presented at AGU Fall Meeting, 11-15 December, New Orleans, LA. (Abstract B41A-1923) (Poster)
    2. Ermokhina, K. 2017. Russian arctic datasets of releves meeting requirements for classification of vegetation using Braun-Blanquet approach. Presented at Arctic Science Summit Week, Prague, CZ, 31 March-7 April. (Abstract P 142, p. 134) (Poster)
    3. Leibman, M.O., Khomutov, A.V., Mullanurov, D., Orekhov, P., Ponomareva, O. & Gravis, A. 2017. ArcGIS interactive map for EAT database. NASA Yamal Synthesis project meeting, Prague, CZ, April 6, 2017. (Presentation)
    4. Walker, D.A., Breen, A.L., Druckenmiller, L.A., Sibi­k, J., Hennekens, S., Daniels, F.J.A., Matveyeva, N.V., MacKenzie, W.H., Walker, M.D. & Wirth, L.M. 2017. An Arctic Vegetation Archive for circumpolar arctic vegetation classification. Presented at Arctic Science Summit Week, Prague, CZ, 31 March-7 April. (Abstract P 150, p. 137) (Poster)
  1. 2016

    1. Buchhorn, M., Raynolds, M.K., Walker, D.A., M. Willis, M., Wirth, L.M., Kanevskiy, M., Matyshak, G., Shur, Y., and Peirce, J. 2016. Effects of 45 years of heavy road traffic and climate change on the thermal regime of permafrost and tundra at Prudhoe Bay, Alaska. In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 1203-1205. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 1203-1205) (Poster)
    2. Ermokhina, K.S., Kizyakov, A., Leibman, M. and Khomutov, A. 2016. GIS of the gas-emission crater area (Yamal peninsula, Russia). In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 986-987. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 986-987 ) (Poster)
    3. Frost, G., Epstein, H., Walker, D. and Matyshak, G. 2016. Changes to Active-Layer Temperature after Tall Shrub Expansion in Arctic Tundra. In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 410-411. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 410-411) (Poster)
    4. Kanevskiy, M., Shur, Y., Walker, D.A., Buchhorn, M., Jorgensen, M.T., Matyshak, M., Raynolds, M.K., Peirce, J.L. and Wirth, L.M. 2016. Evaluation of Risk of Ice-Wedge Degradation, Prudhoe Bay Oilfield, Alaska. In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 999-1001. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 999-1001) (Poster)
    5. Khomutov, A., Dvornikov, Y., Leibman, M., Gubarkov, A. and Mullanurov, D. 2016. The rates of thermocirque development and driving factors of their activation on Central Yamal, Russia. In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 910-911. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 910-911) (Poster)
    6. Khomutov, A., Leibman, M. Dvornikov, Y. and Khitun, O. 2016. Study of off-road vehicle trails impact on tundra landscapes by field and remote-sensing methods, Central Yamal, Russia. In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 912-913. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 912-913) (Poster)
    7. Timling, I. 2016. Microcosm. Presented at Ice Alaska 2016. Fairbanks, AK, February 29-March 27. (Poster)
    8. Walker, D.A., Epstein, H.E. Leibman, M., Khomutov, A., Moskolenko, N., Orekhov, P., Matyshak, G., Frost, G.V., Khitun, O., Chasnikova, S., Sibik, J., Kaarlejarvi, E. and Kuss, J.P. 2016. Eurasia Arctic Transect: Vegetation-environment-permafrost relationships. In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 933-934. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 933-934) (Poster)
    9. Walker, D.A., Epstein, H.E., Raynolds, M.K., Buchhorn, M., Kumpula, T., Forbes, B.C., Leibman, M.O., Khomutov, A., Matyshak, G.V., Curry, T., Kofinas, G., Romanovsky, V., Shur, Y. and Kanevskiy, M.Z. 2016. Yamal LCLUC Synthesis: Comparison of infrastructure development and consequences to social-ecological systems in the Bovanenkovo Gas Field, Russia and the Prudhoe Bay Oilfield, Alaska. Presented at Science Team Meeting, Bethesda, MD, April 18-19. (Poster)
    10. Walker, D.A., Peirce, J.L., Kumpula, T., Liebman, M.O., Matyshak, G., Streletskiy, D., Raynolds, M.K., Shur, Y.S., Kanevskiy, M., Buchhorn, M., Kofinas, G., Ambrosius, K., Epstein, H.E., Romanovsky, V., Forbes, B.C., Khumotov, A., Khitun, O., Shiklomnanov, N., Grebenets, V., Lemay, M., Allard, M., Vincent, W., Lamoureux, S., Bell, T., Forbes, D., Fondahl, G., Kuznetsova, E., Roy, L-P, Petrov, A. and Schweitzer, P. 2016. Rapid Arctic Transitions due to Infrastructure and Climate (RATIC): An ICARP III initiative focusing on the cumulative effects of Arctic infrastructure and climate change. In: F. Günther and A. Morgenstern (eds.), XI. International Conference On Permafrost - Book of Abstracts, 20-24 June 2016, Potsdam, Germany. Bibliothek Wissenschaftspark Albert Einstein, pp. 1234-1236. doi:10.2312/GFZ.LIS.2016.001 (Abstract, pp. 1234-1236) (Poster)
  1. 2015

    1. Bhatt, U.S., Walker, D.A., Bieniek, P., Epstein, H., Comiso, J., Pinzon, J. and Tucker, C.J. 2015. Climate variations and Alaska tundra vegetation productivity declines in spring. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract GC11F-1083) (Poster)
    2. Buchhorn, M., Raynolds, M.K., Walker, D.A., Kanevskiy, M., Matyshak, G., Shur, Y., Wirth, L.M. and Peirce, J. 2015. Effects of 45 Years of Heavy Road Traffic and Infrastructure on Permafrost and Tundra at Prudhoe Bay, Alaska. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract GC23J-1215) (Poster)
    3. Forbes, B.C., Kumpula, T., Meschtyb, N., Laptander, R., Macias-Fauria, M., Zetterberg, P. and Verdonen, M. 2015. Sea Ice, Hydrocarbon Extraction, Rain-on-Snow and Tundra Reindeer Nomadism in Arctic Russia. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract GC23D-1176) (Poster)
    4. Frost, G.V., Christpherson, T., Liljedahl, A., Macander, M.J., Walker, D.A. and Wells, A.F. 2015. Regional Patterns of Ice-Wedge Degradation Across Northern Alaska: What Does Asynchronous Timing of Onset Tell Us Regarding Triggering Mechanisms, Thresholds, and Impacts?. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract C21C-0750) (Poster)
    5. Liljedahl, A., Daanen, R., Fedorov, A., Grosse, G., Hinzman, L., Iijima, Y., Jorgenson, J., Matveyeva, N., Necsoiu, M., Raynolds, M.K., Romanovsky, V., Schulla, J., Tape, K., Walker, D.A., Wilson, C. and Yabuki, H. 2015. Ice wedge degradation: Why Arctic lowlands are becoming wetter and drier. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract C21C-0749) (Poster)
    6. Prakash, A., Buchhorn, M., Cristóbal, J., Kokaly, R., Graham, P., Waigl, C., Hampton, D., Werdon, M., Guldager, N. and Bertram, M. 2015. Field-Based and Airborne Hyperspectral Imaging for Applied Research in the State of Alaska. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract GC23K-1233) (Poster)
    7. Romanovsky, V., Cable, W., Kholodov, A., Nicolsky, D., Marchenko, S., Panda, S. and Muskett, R. 2015. Detecting and Forecasting Permafrost Degradation in a Warming Climate. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract B31D-0576) (Poster)
    8. Walker, D.A., Bhatt, U.S., Breen, A.L., Buchhorn, M., Druckenmiller, L.A., Kade, A., Murray, D.F., Peirce, J.L., Raynolds, M.K., Wirth, L.M., Daniëls, F.J.A., Bültmann, H., Alsos, I., Ehrich, D., Ims, R.A., Edwards, M.E., Epstein, H.E., Gould, W.A., Meltofte, H., Talbot, S.S., Šibík, J., Hennekens, S., Walker, M.D., Cooper, D.J., Ebersole, J.J., Elmendorf, S.C., Hollister, B.D., Webber, P.J., Iversen, C., Sloan, V., Jorgenson, M.T., Lee, M.T., Peet, R.K., MacKenzie, M.H., Schickhoff, U., Tweedie, C.E. and Villarreal, Sl 2015. A hierarchic approach to examining panArctic vegetation with a focus on the linkages between remote sensing and plot-based studies. Presented at AGU Fall Meeting. San Francisco, CA, December 14 - 18. (Abstract B53C-0577) (Poster)
    9. Walker, D.A., Peirce, J.L., Kumpula, T., Liebman, M.O., Matyshak, G., Streletskiy, D., Raynolds, M.K., Shur, Y.S., Kanevskiy, M., Buchhorn, M., Kofinas, G., Ambrosius, K., Epstein, H.E., Romanovsky, V., Forbes, B.C., Khumotov, A., Khitun, O., Shiklomnanov, N., Grebenets, V., Lemay, M., Allard, M., Vincent, W., Lamoureux, S., Bell, T., Forbes, D., Fondahl, G., Kuznetsova, E., Roy, L-P, Petrov, A. and Schweitzer, P. 2015. Rapid Arctic Changes due to Infrastructure and Climate (RATIC) in the Russian North. Presented at AGU Fall Meeting, San Francisco, CA, December 14-18. (Abstract GC31B-1183) (Poster)
  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. Changing Seasonality of Tundra Vegetation and Associated Climatic Variables. Presented at AGU Fall Meeting. San Francisco, December 15 - 19. (Abstract) (Poster)
    2. 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). Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 334) (Poster)
    3. 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. Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 339) (Poster)
    4. Dvornikov, Y., Bartsch A., Khomutov, A. et al. 2014. Process of Organic transport in Lakes of the Yamal Region (POLYAR). Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 330) (Poster)
    5. Ermokhina, K. 2014. Overview of the West Siberian component of the Arctic Vegetation Archive. Presented at Arctic Change 2014. Ottawa, ON, December 8-12. (Abstract 332) (Poster)
    6. 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. Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 331) (Poster)
    7. 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. Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 337) (Poster)
    8. 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. Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 332) (Poster)
    9. 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. Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 333) (Poster)
    10. 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. Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 336) (Poster)
    11. 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. Presented at Arctic Change 2014. Ottawa, ON December 8-12. (Abstract 329) (Poster)
    12. 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. Presented at AGU Fall Meeting. San Francisco, December 15 - 19. (Abstract) (Poster)
  1. 2012

    1. Frost, G.V., Epstein, H.E., Walker, D.A. 2012. Widespread expansion of boreal shrublands in the Siberian Low Arctic since the 1960s. Presented at AGU Fall Meeting. San Francisco, CA December 3-7. (CC31A-0965, Wednesday Dec. 5, session GC31A) (Poster)
    2. 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. Presented at 12th Circumpolar Remote Sensing Symposium, Levi, Finland, May 14-18, 2012. (Poster)
    3. Khomutov, A. 2012. Mapping of Active Layer Depths Using Correlation between Active Layer Depth and Vegetation Parameters on Central Yamal, Russia. Presented at From Knowledge to Action, 2012 IPY Conference, Montreal, Quebec, May 22-27, 2012. (Poster)
    4. 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. Presented at AGU Fall Meeting, San Francisco, CA December 3-7. (GC21A-0941, Tuesday, December 4, session GC21A) (Poster)
    5. 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. Presented at 12th Circumpolar Remote Sensing Symposium, Levi, Finland, May 14-18, 2012. (Poster)
    6. 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). Presented at From Knowledge to Action, 2012 IPY Conference, Montreal, Quebec, May 22-27, 2012. (Poster)
    7. 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. Presented at 2012 NASA LCLUC Science Team meeting, Rockville, MD, April 3-5, 2012. (Poster)
    8. 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. Presented at Tenth International Conference on Permafrost, Salekhard, Russia June 25-29, 2012. (Poster)
  1. 2011

    1. Please note that AGU no longer allows a direct link to a poster or talk abstract; you will need to sign in as "guest", search for the session, then scroll down to find the abstract.
    2. Bhatt, U.S., Walker, D.A., Raynlds, M.K, Bieniek, P., Comiso, J.C., Pinzon, J.E., and Tucker, C.J. 2011. The role of seasonality and large-scale climate drivers in recent Pan-Arctic tundra vegetation variability and change. AGU Fall Meeting. San Francisco, CA, December 5-9. (GC51F-1075, Friday, Dec. 9, session GC51F) (Poster)
    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. Presented at 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. Presented at LCLUC Science Team Meeting. Adelphi, MD March 28-30. (Poster)
    5. 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. Presented at LCLUC Science Team Meeting. Adelphi, MD . (Poster)
    6. 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. AGU Fall Meeting. San Francisco, CA, December 5-9. (GC51F-1058, Friday, Dec. 9, session GC51F) (Poster)
    7. 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. Presented at 2011 Association of American Geographers Annual Meeting. Seattle, WA April 12-16. (Poster)
    8. 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. AGU Fall Meeting. San Francisco, CA, December 5-9. (GC51F-1072, Friday, Dec. 9, session GC51F) (Poster)
    9. 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. Presented at LCLUC Science Team Meeting. Adelphi, MD March 28-30. (Poster)
    10. Yu, Q., Epstein, H., Walker, D.A., and Forbes, B.C. 2011. Modeling dynamics of circum-arctic tundra plant communities in response to climate warming and grazing pressure. AGU Fall Meeting. San Francisco, cA, December 5-9. (GC41C-0831, Friday, Dec. 9, session GC51F) (Poster)
    11. Yu, Q., Epstein, H.E., Walker, D.A. 2011. Modeling dynamics of tundra plant communities on the Yamal Peninsula. Presented at LCLUC Science Team Meeting. Adelphi, MD March 28-30. (Poster)
  1. 2010

    1. 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. Presented at State of the Arctic Meeting. Miami, FL March 16-19. (Poster)
    2. 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. Presented at Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    3. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Poster)
    4. 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. AGU Fall Meeting. San Francisco, CA, 13-17 December. (Poster)
    5. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 20-22 April. (Poster)
    6. 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. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Presentation)
    7. Forbes, B.C., Fauria, M.M., Zetterberg, P. 2010. Russian Arctic Warming and 'Greening' are Closely Tracked by Tundra Shrub Willows. Presented at State of the Arctic Conference. Miami, FL March 16-19. (Poster)
    8. 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. Presented at Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    9. 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. Presented at State of the Arctic Meeting. Miami, FL March 16-19. (Poster)
    10. Frost, G.V., Epstein, H.E., Walker, D.A. 2010. Spatio-temporal dynamics in tree and tall shrub cover near Kharp, northwest Siberia. Presented at Land Cover, Land Use Change Spring Science Team Meeting Bethesda, MD April 20-22. (Poster)
    11. Frost, G.V., Walker, D.A., Raynolds, M.K., Epstein, H.E. 2010. Ordination and gradient analysis of Yamal Peninsula releve data. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 8-10. (Poster)
    12. 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. Presented at State of the Arctic Meeting. Miami, FL March 16-19. (Poster)
    13. Khitun, O., Rebristaya, O. 2010. Concrete Flora Concept as a Base for Floristic Investigations in the Russian Arctic. Presented at Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    14. 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). Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    15. 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). Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    16. Maier, H.A., Walker, D.A. 2010. Application of Global Land Survey data to land-cover mapping: Yamal Peninsula, Russia. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Poster)
    17. Moskalenko, N.G. 2010. Vegetation Dynamics at the Nadym and Kharasavei sites in the West Siberia North. Presented at Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Poster)
    18. 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. AGU Fall Meeting. San Francisco, CA, 13-17 December. (GC43B-0984) (Poster)
    19. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 20-22 April. (Poster)
    20. 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. Presented at Mapping and Monitoring of Nordic Vegetation and Landscapes Conference. Hveragerði, Iceland 16-18 September. (Conference Website) (Poster)
    21. Yu, Q., Epstein, H.E., Walker, D.A. 2010. Land surface dynamics on the Yamal Peninsula based on multi-temporal imagery. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Poster)
  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. Presented at 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., 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. AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0701. (Poster)
    3. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 Mar-2 Apr. (Poster)
    4. 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. AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0697. (Poster)
    5. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting, Bethesda, MD, March 31-April2, 2009. (Poster)
    6. 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. AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0698. (Poster)
    7. Jia, G.J., Epstein, H.E., Walker, D.A., Hu, Y., Wang, H. 2009. Decadal changes of phenological patterns over Arctic tundra biome. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Poster)
    8. Raynolds, M.K., Walker, D.A., Verbyla, D., Huetmann, F. 2009. Modeling the distribution of circumpolar arctic vegetation. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, Maryland 31 March-2 April. (Poster)
    9. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Poster)
    10. 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. Presented at Mapping and Monitoring of Nordic Vegetation and Landscapes. Hveragerdi, Iceland 16-18 September. (Poster)
    11. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Poster)
    12. Yu, Q., Epstein, H.E., Walker, D.A. 2009. Evaluating Environmental Controls on Arctic Tundra Vegetation Dynamics on Yamal Peninsula, Russia. Presented at EnviroDay. University of Virginia, VA January 12. (Poster)
  1. 2008

    1. 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. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD 28 April - 2 May . (Poster)
    2. 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. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May 2. (NASA CCE website) (Poster)
    3. Daanen, R., Romanovsky, V., Walker, D., LaDouceur, M. 2008. High resolution, surface and subsurface survey of a non-sorted circle system. Ninth International Conference on Permafrost. Fairbanks, AK, June 29 - July 3, 1:321-326. (Session 1P-9-62) (Poster)
    4. Epstein, H.E., Walker, D.A., Kuss, P., Karlejaärvi, E., Matyshak, G. 2008. Ecosystem Properties along a Latitudinal Gradient of the Yamal Region, Russia. European Geosciences Union General Assembly. Vienna, Austria, 13 - 18 April, 10:EGU2008-A-04406. (Abstract) (Poster)
    5. 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. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop, Adelphi, MD, April 28-May2, 2008. (Abstract) (Poster)
    6. 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. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May2. (Poster)
    7. Jia, G.J., Epstein, H.E., Walker, D.A., Wang, H. 2008. Decadal changes of phenological patterns over arctic tundra biome. AGU Fall Meeting. San Francisco, CA, Dec. 15-19, 89:C21C-0559. (Poster)
    8. 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. Presented at 20th Annual Meeting and Arctic Forum. Washington, D.C. 13 - 15 May 2008. (Poster)
    9. 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. Ninth International Conference on Permafrost. Fairbanks, AK, June 29-July 3, Extended Abstracts 2:177-178. (Session 2P-4-43) (Poster)
    10. Nicolsky, D.J., Romanovsky, V.E., Tipenko, G.S., Walker, D.A. 2008. Modeling observed differential frost heave within non-sorted circles in Alaska. Ninth International Conference on Permafrost. Fairbanks, AK, June 29-July 3, 2:1281-1286. (Session 3P-6-54) (Poster)
    11. Raynolds, M.K., Walker, D.A., Comiso, J.C. 2008. Spatial Patterns of Land Surface Temperature and NDVI on the Yamal Peninsula, Russia. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May 2. (Poster)
    12. Walker, D.A. 2008. North American Arctic Transect. Presented at 20th Annual Meeting and Arctic Forum. Washington, D.C. May 13-15 . (Poster)
    13. 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. (Presentation)
    14. 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. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop, Adelphi, MD, April 28-May 2, 2008. (Poster)
    15. 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?. Presented at 20th Annual Meeting and Arctic Forum. Washington, D.C. 13-15 May . (Poster)
    16. Yu, Q., Epstein, H.E. 2008. Evaluating arctic tundra system resilience to grazing disturbances: a modeling approach. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, Maryland April 28-May 2. (Poster)
    17. Yu, Q., Epstein, H.E. 2008. Evaluating Arctic tundra system resilience to grazing disturbances: A modeling approach. European Geosciences Union General Assembly 2008. Vienna, Austria, 13 - 18 April, 10:EGU2008-A-12154. (EGU2008-A-12154) (Poster)
  1. 2007

    1. Bhatt, U.S., Walker, D.A., Raynolds, M.K., Comiso, J.C. 2007. Influence of Regional Sea Ice Variability on Arctic Tundra. Presented at Seventh International Conference on Global Change: Connection to the Arctic. Fairbanks, Alaska, February 19-20, 2007, 76-78. (Online Proceedings) (Poster)
    2. 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. Presented at AGU Fall Meeting, San Francisco, CA, December 10-14, 2007. (U42C-0612) (Poster)
    3. Jia, G.J., Epstein, H.E., Walker, D.A. 2007. Trends of Vegetation Greenness in the Arctic from 1982-2005. Presented at AGU Fall Meeting, San Francisco, CA, December 10-14, 2007. (Abstract B21A-0041) (Poster)
    4. Kuss, K. and Walker, D.A. 2007. Project for interlinked Flora Arctica and Arctic Vegetation databases. 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)
    5. Raynolds, M.K. 2007. The relationship between permafrost characteristics and the distribution of arctic vegetation types. Presented at Arctic Science Conference, Arctic AAAS Division Meeting, Anchorage, AK, September 24-26, 2007. (Poster)
    6. 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. Presented at 41st Alaska Surveying and Mapping Conference. Westmark Hotel, Fairbanks, AK 19-23 March. (Poster)
  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. Presented at Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Poster)
    2. Daanen, R.P., Peterson, R., Misra, D., Nicolsky, D., Epstein, H.E., Walker, D.A. 2006. Modeling self organization of non-sorted circles. Presented at European Geosciences Union General Assembly. Vienna, Austria April 2-7. (Poster)
    3. 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. Presented at Arctic Forum. Washington, DC May 12. (Poster)
    4. 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. Presented at 26th Annual ESRI International User Conference. San Diego, CA August 7-12. (Poster)
    5. 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. Presented at Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Poster)
    6. 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. AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C51A-0385. (C51A-0385) (Proceedings)
    7. 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. Presented at Land Cover, Land Use Change Meeting. College Park, MD October 10-12. (Poster)
    8. 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. Presented at Arctic Forum. Washington, D.C. 25-26 May. (Poster)
  1. 2005

    1. 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. AGU Fall Meeting, San Francisco, CA, December 5-9. (H53C-0477) (Poster)
    2. 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. AGU Fall Meeting, San Francisco, CA, December 5-9, 86:C31A-1107. (C31A-07) (Poster)
    3. 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. Presented at ICARP II. Copenhagen, Denmark November 10-12. (Poster)
  1. 2004

    1. Kuss, P. 2004. Cassiope tetragona - Dryas integrifolia Non-acidic Snowbed Communities Along the Thompson River, Banks Island, Canada. Presented at Second International Workshop on Circumpolar Vegetation Classification and Mapping. Tromsø, Norway June 2-6. (Poster)
  1. 2003

    1. Gould, W.A., Gonzalez, G., Walker, D.A. 2003. Biocomplexity of Frost-boil Ecosystems: Integrating science and education. Presented at Biocomplexity in the Environment Awardees Meeting. Arlington, Virginia 14 - 17 September. (Poster)
    2. Kade, A. and D.A. Walker 2003. Experimental Alteration of Vegetation Canopy and the Effects on Cryoturbation Regime. Presented at 54th Arctic Science Conference. Fairbanks, AK 22 - 24 September. (Poster)
    3. Kade, A.N., Walker, D.A. 2003. Manipulation of vegetation canopy and the effects on cryoturbation regime in Alaskan Arctic tundra. Presented at 54th Arctic Science Conference. Fairbanks, AK 22-24 September. (Poster)
    4. Munger, C.A., Walker, D.A. 2003. Vegetation of the upper Kuparuk River region in relationship to glacial geology and surficial geomorphology. Presented at 54th Arctic Science Conference. Fairbanks, AK 22-24 September. (Poster)
    5. 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)
    6. 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. Presented at 54th Arctic Science Conference. Fairbanks, AK 22 - 24 September. (Poster)
    7. 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. Presented at Biocomplexity in the Environment Awardees Meeting. Arlington, VA 14 - 17 September.
    8. 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)
  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. Presented at 53rd Alaska Science Conference of the American Association for the Advancement of Science Arctic Division, Fairbanks, AK, September 18-21, 2002. (Poster)
    2. Kade, A.N., Walker, D.A. 2002. Vegetation and Cryoturbation Interactions in Alaskan Arctic Tundra. Presented at 53rd Alaska Science Conference of the American Association for the Advancement of Science Arctic Division. Fairbanks, AK September 18-21. (Poster)
    3. Kade, A.N., Walker, D.A. 2002. Experimental investigation of vegetation and cryoturbation interactions in Alaskan arctic tundra. Presented at 53rd Arctic Science Conference. Fairbanks, AK 18-21 September. (Poster)
    4. 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. Presented at ARCSS All-Hands Workshop. Seattle, WA February 20. (Poster)
  1. 2001

    1. Gould, W.A., Raynolds, M.K., Walker, D.A. 2001. Vegetation Characteristics Derived from an Integrated Vegetation Complex Map for the Canadian Arctic. Arctic GIS Workshop. Seattle, WA, 22-24 January. (Abstract) (Poster)
    2. 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. Presented at LAII All Hands Meeting. Salt Lake City, UT 14-17 November. (Poster)
    3. 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. Presented at Arctic GIS Workshop. Seattle, WA 22-24 Jan. (Poster)
  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. Presented at ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    2. 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. AGU Fall Meeting, San Francisco, CA, December 15-19, 81:B72B-09. (B72B-09) (Poster)
    3. Gould, W.A., D.A. Walker, Raynolds, M.K. 2000. Canadian transect and mapping for the Circumpolar Arctic Vegetation Map. Presented at ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    4. Gould, W.A., Raynolds, M.K., Walker, D.A. 2000. Vegetation Characteristics Derived from an Integrated Vegetation Complex Map for the Canadian Arctic. AGU Fall Meeting, San Francisco, CA, December 15-19, 81:B72B-13. (B72B-13)
    5. 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. Presented at 6th Circumpolar Symposium on Remote Sensing of Polar Environments. Yellowknife, NWT, Canada 12-14 May. (Poster)
    6. Jia, G.J., Epstein, H.E., Walker, D.A. 2000. Spatial and intraseasonal characteristics of AVHRR-NDVI for the arctic tundra in northern Alaska. Presented at ARCSS LAII Science Workshop. Seattle, WA 23-26 February. (Poster)
    7. 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. Presented at ARCSS LAII Science Workshop. Seattle, WA 23-26 February. (Poster)
    8. Muller, S.V., D.A. Walker, Moody., A. 2000. Accuracy assessment of a MSS-derived landcover map of Northern Alaska. Presented at ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    9. 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. AGU Fall Meeting, San Francisco, CA, December 15-19, 81:B72B-15. (B72B-15)
    10. 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. Presented at ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    11. 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. Presented at ARCSS LAII Science Workshop. Seattle, WA February 23 - 26. (Poster)
    12. Walker, D.A., V.E. Romanovsky, W.B. Krantz, al., e. 2000. Cryoturbation-ecosystem interactions: project overview and first field season results. Presented at IARC/CIFAR Principal Investigators Meeting. Fairbanks, AK October 23 - 25. (Poster)
  1. 1999

    1. 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. Presented at ARCSS LAII Science Workshop. Seattle, WA March 11-13. (Poster)
  1. 1998

    1. 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. Presented at 49th Annual Arctic Science Conference. Fairbanks, AK October 25 - 28. (Poster)
  1. 1997

    1. 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. Presented at ARCSS LAII Science Workshop. Seattle, WA 27-29 March. (Poster)
    2. 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. Presented at ARCSS-LAII Science Workshop. Seattle, WA March 27 - 29. (Poster)
    3. 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. Presented at Western Snow Conference and Eastern Snow Conference. Banff, Alberta May 4 - 8. (Poster)
    4. 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. Presented at ARCSS-LAII Science Workshop. Seattle, WA March 27 - 29. (Poster)
  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. Presented at 26th Annual Arctic Workshop. Boulder, CO March 14 - 16. (Poster)
    2. Brown, J., F.E. Nelson, D.A. Walker, Marion., G.M. 1996. A Circumpolar Active Layer Monitoring (CALM) Program. Presented at Arctic System Science Flux Study Workshop. Seattle, WA February 22 - 24. (Poster)
    3. 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. Presented at ESRI ARC/INFO Users' Conference. Palm Springs, CA May 20-24. (Poster)
    4. 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. Presented at Arctic System Science Flux Study Workshop. Seattle, WA February 22 - 24. (Poster)
    5. 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. Presented at 26th Annual Arctic Workshop. Boulder, CO 14-16 March. (Poster)
  1. 1994

    1. 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)
  1. 1992

    1. Walker, D.A., M. D. Walker, N.A. Auerbach, Lestak, L.R. 1992. A Hierarchical GIS for modeling tundra ecosystem processes. Presented at 12th Annual ESRI User's Conference. Palm Springs, CA May 20 - 25. (Poster)
  1. 1991

    1. Auerbach, N.A., M. D. Walker, Walker, D.A., Randolph, S. 1991. Effects of road dust disturbance in arctic tundra. Presented at 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. Presented at 21st Arctic Workshop, Alaska Quaternary Center. Fairbanks, AK . (Poster)
    3. 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. Presented at 11th Annual ESRI User's Conference. Palm Springs, CA May 20 - 25. (Poster)
    4. Walker, D.A., N.D. Lederer, Lestak, L.R. 1991. Niwot Ridge/Green Lakes Valley LTER Site. Presented at 11th Annual ESRI User's Conference. Palm Springs, CA May 20 - 25. (Poster)
    5. Walker, D.A., Walker, M.D., Auerbach, N.A., Lestak, L.R. 1991. A Hierarchical GIS for modeling tundra ecosystem processes. Presented at First International Conference/ Workshop on Integrating Geographic Information Systems and Environmental Modeling. Boulder, CO 15-19 September. (Poster)
  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. Presented at 19th Annual Arctic Workshop. Boulder, CO March 8 - 10.
    2. 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. Presented at 19th Annual Arctic Workshop. Boulder, CO March 8 - 10. (Poster)
    3. 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. Presented at Faculty Symposium on Global Change. Boulder, CO 13-14 September. (Poster)
    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. Presented at International ESRI User's Conference. Palm Springs, CA 14-18 May. (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. Presented at Long-Term Ecological Research Program All Scientist Meeting. Estes Park, CO 26-29 September. (Poster)
  1. 1989

    1. 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. Presented at 1989 ESRI Users Conference. Palm Springs, CA May 22 - 26. (Third place in the Analytical Division of the Poster Competition) (Poster)
    2. Wessman, C.A., Ayers, L., Walker, D.A. 1989. Remotely sensed pattern to system process in the Front Range. Presented at Program review for the Cooperative Institute for Research in Environmental Sciences. Boulder, CO June 8. (Poster)
  1. 1988

    1. Walker, D.A., Benson, C.S., Evans, B.M. 1988. Application of GIS to spatial analysis of terrain-snow-vegetation interactions. Presented at 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
    2. 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. Presented at 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
    3. Walker, D.A., Walker, M.D., Lederer, N.D. 1988. Terrain and vegetation classification of the DOE R4D Imnavait Creek site. Presented at 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
    4. Walker, M.D., Walker, D.A., Acevedo, W. 1988. Vegetation and environmental interactions at two scales on the North Slope of Alaska. Presented at 17th Annual Arctic Workshop. Boulder, CO 14-16 April. (Poster)
  1. 1986

    1. 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. Presented at Seventh Conference of the Comité Arctique International (Restoration and Vegetation Succession in Circumpolar Lands). Rejkavik, Iceland September 7 - 13. (Poster)
    2. Walker, D.A. 1986. An automated mapping approach for geobotanical maps of the DOE R4D research site near Toolik Lake, Alaska. Presented at 15th Annual Arctic Workshop. Boulder, CO April 24-26. (Poster)
    3. Walker, D.A. 1986. Roadside vegetation changes due to dust. Dalton Highway and Prudhoe Bay Spine Road, Alaska. Presented at Seventh Conference of the Comite Arctique International (Restoration and Vegetation Succession in Circumpolar Lands). Reykjavik, Iceland September 7-13. (Poster)
    4. Walker, M.D., Walker, D.A. 1986. Soil and vegetation succession on pingos, central arctic coastal plain, Alaska. Presented at Seventh Conference of the Comite Arctique International (Restoration and Vegetation Succession in Circumpolar Lands). Rejkavik, Iceland September 7-13. (Poster)
  1. 1984

    1. Walker, D.A., Walker, M.D., Everett, K.R., Webber, P.J. 1984. The puzzling pingos of Prudhoe Bay. Presented at 13th Annual Arctic Workshop. Boulder, CO March 15-17. (Poster)
  1. 1983

    1. 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)
  1. 1982

    1. Klinger, L.F., Walker, D.A., Webber, P.J. 1982. The effects of a gravel road on arctic coastal plain tundra. Presented at 11th Annual Arctic Workshop. Boulder, CO March 11 - 13. (Poster)
    2. Simmons, C.L., Walker, D.A., Webber, P.J. 1982. Sensitivity of selected plant communities to seawater spills, Prudhoe Bay, Alaska. Presented at 11th Annual Arctic Workshop. Boulder, CO March 11 - 13. (Poster)
    3. 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. Presented at 11th Annual Arctic Workshop. Boulder, CO March 11-13. (Poster)
  1. 1981

    1. Simmons, C.L., Walker, D.A., Webber, P.J., Everett, K.R. 1981. Sea-water tolerances of selected tundra plants of Prudhoe Bay, Alaska. Presented at 10th Annual Arctic Workshop. Boulder, CO March 12-14. (Poster)
    2. Walker, D.A., Webber, P.J., Everett, K.R., Brown, J. 1981. Geobotanical mapping of the Prudhoe Bay region, Alaska. Presented at 19th Annual Arctic Workshop. Boulder, CO 12-14 March. (Poster)
  1. 1979

    1. Walker, D.A., Webber, P.J. 1979. Salix lanata ssp. richardsonii as a climatic indicator in Northern Alaska. Presented at Arctic Workshop. Boulder, CO 4-5 May. (Poster)

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