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Greening of the Arctic: An IPY Initiative

Posters and Talks

Posters

Talks

  1. 2013

    1. 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. Presented at Seminar at Geophysical Institute, University of Bergen. Bergen, Norway February 20. (Oral Presentation)
    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. Pan-Arctic Tundra Vegetation Change and it's Links to Climate. Presented at Dpto. Biologia Vegetal II, Univ. Complutense. Madrid, Spain February 6. (Oral Presentation)

  1. 2012

    1. 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. Presented at From Knowledge to Action, 2012 IPY Conference, Montreal, Quebec, May 22-27, 2012. (Oral Presentation)
    2. 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. Presented at AGU Fall Meeting, San Francisco, CA December 3-7. (Oral Presentation)
    3. 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. Presented at From Knowledge to Action, 2012 IPY Conference, Montreal, Quebec, May 22-27, 2012. (Oral Presentation)
    4. 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. Presented at 12th Circumpolar Remote Sensing Symposium, Levi, Finland, May 14-18, 2012. (Oral Presentation)
    5. Ermokhina, K. 2012. Phytoindication of Landslide Disturbances in the Central Yamal. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    6. Forbes, B.C. 2012. Summary of the Finnish contribution to the LCLUC project. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    7. Frost, G.V., Epstein, H.E., Matyshak, G., Ermokhina, K., Walker, D.A. 2012. Summary of Kharp field expedition, July 2011. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    8. 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. Presented at 12th Circumpolar Remote Sensing Symposium, Levi, Finland, May 14-18, 2012. (Oral Presentation)
    9. 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. Presented at From Knowledge to Action, 2012 IPY Conference, Montreal, Quebec, May 22-27, 2012. (Oral Presentation)
    10. Heim, B., Bartsch, A., Buchhorn, M. 2012. I. SATELLITE-BASED PRODUCTS, EVALUATION - II. Up-Scaling, Calibration and Experiments-Yamal. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    11. Heim, B., Bartsch, A., Elger, K., Permafrost Team, E.D. 2012. Circum-Arctic Satellite-Based Service. Presented at 12th Circumpolar Remote Sensing Symposium, Levi, Finland, May 14-18, 2012. (Oral Presentation)
    12. Khomutov, A., Leibman, M.O., Moskalenko, N., Orekhov, P., Mullanurov, D. 2012. Database of EAT permafrost information. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    13. 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. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    14. 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. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    15. 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. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    16. Matyshak, G.V. 2012. Soils investigations along the EAT. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    17. Orekhov, P., Leibman, M.O. 2012. General Environment and Climate of the EAT. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    18. 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. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    19. Ukraintseva, N.G., Korobova, T.A. 2012. Summary of willow studies in the Bovanenkovo region. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    20. Walker, D.A. 2012. Summary of the IPY Greening of the Arctic Project. Presented at Institute of Arctic Biology Seminar. Fairbanks, AK April 6. (Oral Presentation)
    21. Walker, D.A. 2012. Summary of the Greening of the Arctic Project. Presented at Third Yamal Land-Cover Land-Use Change Workshop, Rovaniemi, Finland, May 19-20, 2012. (Oral Presentation)
    22. 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. Presented at 12th Circumpolar Remote Sensing Symposium, Levi, Finland, May 14-18, 2012. (Oral Presentation)
    23. 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. Presented at From Knowledge to Action, 2012 IPY Conference, Montreal, Quebec, May 22-27, 2012. (Oral Presentation)

  1. 2011

    1. 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. AGU Fall Meeting. San Francisco, CA, December 5-9. (GC32A-04, Wednesday, Dec. 7, session GC32A) (Oral Presentation)
    2. 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. (Oral Presentation)
    3. Raynolds, M.K. 2011. Searching for the response of northern vegetation to climate change. Presented at Iceland Institute of Natural History. Akureyri, Iceland 6 April. (Oral Presentation)
    4. Raynolds, M.K. 2011. Searching for the response of northern vegetation to climate change. Presented at University of Akureyri. Akureyri, Iceland 28 April. (Oral Presentation)
    5. Walker, D.A. 2011. Arctic vegetation along two long bioclimatic transects in North America and Russia. Presented at Fulbright Lecture, Botany Dept., Masarysk University. Brno, Czech Republic March 10. (Oral Presentation)
    6. Walker, D.A. 2011. Greening of the Arctic: Climate change and circumpolar Arctic vegetation. Presented at Fulbright Lecture, Cesko Budovice University. Cesko Budovice, Czech Republic April 27. (Oral Presentation)
    7. 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. Presented at Earth Day, 20th Celebration of the Czech Fulbright Commission. American Center, Prague, Czech Republic April 21. (Oral Presentation)
    8. 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. Presented at High latitude trace gas exchanges: the role of ocean-land interactions. Nuuk, Greenland September 19-22. (Oral Presentation)
    9. 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. Presented at European Vegetation Survey 20th Workshop. Rome, Italy April 6-9. (Oral Presentation)

  1. 2010

    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., 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. AGU Fall Meeting. San Francisco, CA, 13-17 December. (Oral Presentation)
    2. 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. Presented at State of the Arctic Meeting. Miami, Fl March 16-19. (Oral Presentation)
    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 Seasonality of the ice-ocean-atmosphere-terrestrial system on the Yamal. Presented at Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    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. 2010. Circumpolar arctic tundra vegetation change is linked to sea-ice decline. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD 31 March-2 April. (Oral Presentation)
    5. Comiso, J.C. 2010. State of the Cryosphere in the Arctic. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    6. 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. Presented at Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland 8-10 March 2010. (Oral Presentation)
    7. 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. Presented at IPY Oslo Science Conference. Oslo, Norway 8-12 Jun. (Oral Presentation)
    8. 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. (Oral Presentation)
    9. 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. Presented at State of the Arctic Meeting. Miami, FL 16-19 March. (Oral Presentation)
    10. Forbes, B.C., Fauria, M.M., Zetterberg, P., Kumpula, T. 2010. Deciduous shrub growth and the greening of the Arctic in West Siberia. AGU Fall Meeting. San Francisco, CA, 13-17 December. (GC53B-08) (Oral Presentation)
    11. 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. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 20-22. (Oral Presentation)
    12. 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. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    13. 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. Presented at Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Oral Presentation)
    14. 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. AGU Fall Meeting. San Francisco, CA, 13-17 December. (GC54A-03) (Oral Presentation)
    15. Gubarkov, A. 2010. Issues of Yamal Peninsula gas fields development. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    16. Heim, B., Bartsch, A., Boike, J., Hubberten, H.-W. 2010. DUE Permafrost: a spaceborne permafrost monitoring and information system. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    17. Jia, G.J., Hu, Y., Wang, H., Epstein, H.E., Walker, D.A. 2010. Greening and Seasonality: Multi-scale Approaches. Presented at Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland 8-10 March 2010. (Oral Presentation)
    18. Kaplan, J.O., Melton, J.R., Pfeiffer, M., Collins, P.M. 2010. Large-scale dynamic modeling of soil-vegetation interactions. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    19. Khitun, O.V., Moskalenko, N.G. 2010. Summary of Yamal vegetation and flora. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    20. Khomutov, A.V., Leibman, M.O. 2010. Landscape pattern and cryogenic landsliding hazard analysis at Vaskiny Dachi, Central Yamal. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    21. Khomutov, A.V., Leibman, M.O., Epstein, H.E. 2010. Relation between active-layer depth, NDVI and LAI along the Yamal Transect. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    22. Kumpula, T., Forbes, B.C., Stammler, F. 2010. Land-use and land-cover changes in Yamal peninsula. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    23. 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. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    24. Orekhov, P., Leibman, M.O. 2010. Yamal Peninsula, climate, zonation, physiography, geology, permafrost. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    25. Pinzon, J.E., Tucker, C.J. 2010. GIMMS 3g NDVI set and global NDVI trends. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    26. 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. Presented at Yamal Land-Cover land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Oral Presentation)
    27. Stammler, F. 2010. Humans and animals on northern Yamal: uncovering unknown patterns of movement and settlement. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    28. 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. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    29. Ukraintseva, N.K. 2010. High Willow Shrubs in Yamal: Reasons of Their Wide Expansion and Methods of Biomass Assessment. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    30. Walker, D.A. 2010. Welcome, goals of the workshop, and overview of the project. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    31. Walker, D.A. 2010. Greening of the Arctic: Spatial and temporal (1982-2009) variation of circumpolar tundra NDVI and aboveground biomass. AGU Fall Meeting. San Francisco, CA, 13-17 December. (GC53B-01) (Oral Presentation)
    32. 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. Presented at IPY Oslo Science Conference. Oslo, Norway 8-12 June. (Oral Presentation)
    33. 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. Presented at State of the Arctic Meeting. Miami, Fl 16-19 March. (Oral Presentation)
    34. 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). Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland March 08-10. (Oral Presentation)
    35. 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. Presented at Mapping and Monitoring of Nordic Vegetation and Landscapes Conference. Hveragerði, Iceland 16-18 September. (Conference Website) (Oral Presentation)
    36. 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. Presented at Second Yamal Land-Cover Land-Use Change Workshop. Rovaniemi, Finland 8-10 March. (Oral Presentation)
    37. Yu, Q., Epstein, H.E., Walker, D.A., Frost, G.V. 2010. Modeling dynamics of tundra plant communities on the Yamal Peninsula. AGU Fall Meeting. San Francisco, CA, 13-17 December. (GC54A-04) (Oral Presentation)

  1. 2009

    1. 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. Presented at NEESPI Workshop CITIES-2009. Krasnoyarsk, Russia July 14. (Oral Presentation)
    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. Presented at Department of Atmospheric Sciences, Informal Seminar. Fairbanks, AK Nov. 18. (Oral Presentation)
    3. 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. Presented at International Workshop on the results of IPY. Sochi, Krasnodar Krai, Russia 28 September - 1 October. (Oral Presentation)
    4. Leibman, M.O., Khomutov, A.V. 2009. Environmental controls of the thaw depth and rate of thaw under climate fluctuations. Association of American Geographers Annual Meeting. Las Vegas, NV, March 22-27. (Abstract) (Oral Presentation)
    5. Leibman, M.O., Ukraintseva, N.K. 2009. Mechanisms and geoecological consequences of cryogenic landslides in the area of marine sedimentation. European Geosciences Union General Assembly 2009. Vienna, Austria, April 19-24, 11:EGU2009-3980. (Abstract) (Oral Presentation)
    6. Walker, D.A. 2009. Arctic land is greening, says scientist. (mp3) mp3
    7. 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. AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC43B-08. (Oral Presentation)
    8. 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. AGU Fall Meeting. San Francisco, CA, December 14-18, 90:GC31A-0693. (Oral Presentation)

  1. 2008

    1. Anon. 2008. Agenda and Abstracts. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    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. European Geosciences Union General Assembly. Vienna, Austria, 13 -18 April, 10:EGU2008-A-11271. (Abstract) (Oral Presentation)
    3. 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. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    4. 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. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    5. Drozdov, D.S. 2008. Mapping and remote sensing of natural and technogenic geosystems in West Siberia. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    6. Epstein, H.E. 2008. Field and Modeling Analyses of Tundra Vegetation Communities Along Latitudinal Temperature Gradients. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    7. 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. Presented at Yamal Land-Cover Land-Use Change Workshop Moscow, Russia 28-30 January. (Oral Presentation)
    8. Forbes, B.C., colleagues, w.m.d. 2008. Effects of petroleum development on reindeer herding in Northwest Siberia: Combining scientific and traditional knowledge. Presented at Yamal Land Cover and Land Use Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    9. Gubarkov, A.A. 2008. Overview of gas and oil development on the Yamal Peninsula. Presented at Yamal Land-Cover Land-Use Change Workshop Moscow, Russia 28-30 January. (Oral Presentation)
    10. Jia, G.J., Wang, H., Epstein, H.E., Walker, D.A. 2008. Greening of Arctic: Knowledge and Uncertainties. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    11. Kaplan, J.O., Lischke, H., Melton, J.R. 2008. Dynamic Modeling of Global Arctic and Subarctic Vegetation. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    12. Khomutov, A.V., Leibman, M.O. 2008. Landscape structure in natural and disturbed conditions of Yamal Peninsula, field results and local GIS. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    13. Kumpula, T. 2008. Remote sensing of land-use/land-cover change in the Bovanenkovo gas field on the Yamal Peninsula. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia 28-30 January. (Oral Presentation)
    14. Kuss, P., Karlejaärvi, E., Moskalenko, N., Epsein, H., Walker, D. 2008. Plant communities at Nadym, Laborovaya, and Vaskiny Dachi. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia 28-30 January. (Oral Presentation)
    15. Leibman, M.O. 2008. Welcome. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30, 2008. (Oral Presentation)
    16. 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. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    17. Matyshak, G.V. 2008. Soils at Nadym and Yamal area. Presented at Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28. (Oral Presentation)
    18. Melnikov, V.P., Drozdov, D.S., Malkova, G.V. 2008. Permafrost: contemporary state, stability and dynamics. Technogenic influence. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    19. Moskalenko, N.G. 2008. Overview of vegetation dynamics, disturbance and recovery studies in Nadym and Yamal areas. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    20. 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. Presented at Ninth International Conference on Permafrost. Fairbanks, AK June 29 - July 3, 2:1255-1260. (Oral Presentation)
    21. Orekhov, P.T. 2008. Lake ecosystems in different landscapes in the Nadym region. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    22. Peterson, R.A. 2008. Numerical modeling of differential frost heave. Ninth International Conference on Permafrost. Fairbanks, AK, June 29-July 3, 2:1399-1404. (Oral Presentation)
    23. Ponomareva, O.E. 2008. Overview of Nadym Region: Climate, Zonation, Physiography, Geology, Permafrost. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    24. 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. Presented at Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28-30. (Oral Presentation)
    25. 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. (Oral Presentation)
    26. Raynolds, M.K., Walker, D.A., Comiso, J.C. 2008. Circumpolar AVHRR Surface Temperature and its Relationship to Bioclimate Zones and NDVI. Presented at Komarov Botanical Institute. St. Petersburg, Russia February 5. (Oral Presentation)
    27. Romanovsky, V., Kholodov, A., Marchenko, S. 2008. Pan-Arctic permafrost thermal conditions: Where does the Yamal Peninsula fit?. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    28. 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. (Oral Presentation)
    29. Stammler, F. 2008. A century of nomadic land use. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    30. Walker, D.A. 2008. Arctic sea ice, Arctic vegetation change and lessons from 2007. Presented at Arctic Observation Integration Workshop. Palisades, NY March 17-20. (Oral Presentation)
    31. Walker, D.A. 2008. Overview of the Yamal LCLUC Project and Objectives of the Meeting. Presented at Yamal Land-Cover Land-Use Change Workshop. Moscow, Russia January 28-30. (Oral Presentation)
    32. 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?. Presented at Institute of Arctic Biology Seminar. Fairbanks, AK November 21. (Oral Presentation)
    33. Walker, D.A. 2008. Biocomplexity of Arctic Patterned Ground: A tale of cracking, heaving, and smothering!. Presented at Dynamics of Complex Systems: Common Threads Workshop. Fairbanks, AK 6 August. (Oral Presentation)
    34. Walker, D.A. 2008. Application of space-based technologies and models to address land-cover/land-use change problems on the Yamal Peninsula, Russia. Presented at NASA Carbon Cycle and Ecosystems Joint Science Workshop. Adelphi, MD April 28 - May 2. (Oral Presentation)
    35. 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. (Oral Presentation)
    36. Walker, D.A., Bhatt, U.S., Epstein, H.E. 2008. Greening of the Arctic: an IPY Initiative. AGU Fall Meeting. San Francisco, CA, December 12-15, 89:1. (U23F-05 INVITED) (Oral Presentation)
    37. 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. European Geosciences Union General Assembly. Vienna, Austria, April 13-18, 10:EGU2008-A-05697. (EGU2008-A-05697) (Oral Presentation)
    38. 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. Presented at Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28-30. (Oral Presentation)
    39. 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. AGU Fall Meeting. San Francisco, CA, December 15-19, 89:GC52A-07. (GC52A-07) (Oral Presentation)
    40. Yu, Q., Epstein , H. 2008. Modeling Arctic Tundra Vegetation Dynamics in North America and the Yamal Region of Russia. Presented at Yamal Land-Cover Land-Use Change Workshop Moscow, Russia January 28-30. (Oral Presentation)

  1. 2007

    1. Alcaraz, D., Chuvieco, E., Epstein, H. 2007. Temporal trends in post-fire regeneration patterns of boreal forests using 1km AVHRR NDVI. Presented at AGU Fall Meeting, San Francisco, CA, December 10-14, 2007. (B11D-0777) (Oral Presentation)
    2. Raynolds, M.K. 2007. Searching for the effects of climate change on arctic vegetation. Presented at Science Cafe Fairbanks, AK May 29. (Oral Presentation)
    3. Walker, D.A. 2007. Interactions of climate, sea-ice, land-temperatures carbon, and humans in the Arctic: an overview. Presented at Land Cover, Land Use Change Spring Science Team Meeting. Bethesda, MD April 4 - 6. (Oral Presentation)

  1. 2006

    1. 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. AGU Fall Meeting, San Francisco, CA, December 11-15, 87:C21C-1181. (C21C-1181) (Oral Presentation)
    2. Epstein, H.E. 2006. Greening of the Arctic: Assessing tundra dynamics with remote sensing and modeling. Presented at Earth System Science Partnership Open Science Conference. Beijing, China November 9-12. (Oral Presentation)
    3. 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. AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C51A-0396. (C51A-0396) (Oral Presentation)
    4. Forbes, B. 2006. Effects of petroleum development on reindeer herding in Northwest Siberia: Combining scientific and traditional knowledge. Presented at Earth System Science Partnership. Beijing, China November 9-12. (Oral Presentation)
    5. Jia, G.J., Epstein, H.E., Walker, D.A. 2006. Decadal changes of vegetation greenness in the Canadian Arctic. AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C51A-0383. (C51A-0383) (Oral Presentation)
    6. 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. AGU Fall Meeting. San Francisco, CA, December 11-15, 87:C44A-05. (C44A-05)
    7. 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. AGU Fall Meeting. San Francisco, CA, December 11-15, C51A-0397. (C51A-0397)
    8. 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. AGU Fall Meeting. San Francisco, CA, December 11 - 15, C51A-0382. (C51A-0382)
    9. Raynolds, M.K., Comiso, J.C., Walker, D.A. 2006. Comparison of arctic tundra bioclimate subzones and AVHRR surface temperature, and relationship to NDVI. Presented at 9th Bi-Annual Circumpolar Remote Sensing Symposium. Seward, Alaska May 16-19. (Oral Presentation)
    10. Romanovsky, V., Marchenko, S., Brown, J. 2006. Thermal State of Permafrost (TSP): The US Contribution to the International Network of Permafrost Observatories. Presented at NEESPI Focus Center Workshop. Fairbanks, AK April 6-8. (Oral Presentation)
    11. 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. Presented at NEESPI Focus Center Workshop. Fairbanks, AK April 6-8. (Oral Presentation)
    12. 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. AGU Fall Meeting. San Francisco, CA, December 11 - 15, C44A-06. (C44A-06) (Oral Presentation)
    13. 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. AGU Fall Meeting. San Francisco, CA, December 11-15, 87:52. (GC21B-04 INVITED)
    14. Walker, D.A. 2006. Application of space-based technologies and models to address landcover/land-use change problems on the Yamal Peninsula, Russia. Presented at NEESPI-CLAC meeting. Fairbanks, AK April 6-8. (Oral Presentation)
    15. Walker, D.A. 2006. Greening of the Arctic: an IPY initiative. Presented at Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Oral Presentation)
    16. 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. Presented at Dynamics of Complex Systems: Common Threads Workshop. Fairbanks, AK July 5-7. (Oral Presentation)
    17. 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. Presented at Arctic Science Conference, Arctic AAAS Division Meeting. Fairbanks, AK October 2-4. (Oral Presentation)

  1. 2005

    1. 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. AGU Fall Meeting, San Francisco, CA, December 5-9, 86:B33E-1092. (B33E-1092) (Oral Presentation)
    2. Jia, G.J., Epstein, H.E., Walker, D.A. 2005. Uneven response of arctic tundra to recent environmental changes. AGU Fall Meeting, San Francisco, CA, December 5-9, 86:B33E-1091. (B33E-1091) (Oral Presentation)
    3. 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. AGU Fall Meeting, San Francisco, CA, December 5-9, 86:C21C-1135. (C21C-1135) (Oral Presentation)
    4. 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) (Oral Presentation)
    5. Ping, C.-L., Kimble, J.M., Michaelson, G.J., Tarnocai, C., Walker, D.A. 2005. Carbon stores and their distribution in different arctic ecosystems. Presented at 1st Climate and Cryosphere International Science Conference. Beijing, China April 11 - 15. (Oral Presentation)
    6. 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. AGU Fall Meeting, San Francisco, CA, December 5-9, 86:C24A-05. (C24A-05) (Oral Presentation)
    7. 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. AGU Fall Meeting, San Francisco, CA, December 5-9, 86:C24A. (C24A-06) (Oral Presentation)
    8. Shur, Y., Ping, C.L., Walker, D.A. 2005. Comprehensive model of frost boils and earth hummocks formation. Presented at 2nd European Conference on Permafrost. Potsdam, Germany 12-16 June. (Oral Presentation)
    9. Tarnocai, C., Walker, D. 2005. Turf hummocks along a climatic gradient in Arctic Canada: characteristics and development. Presented at 2nd European Conference on Permafrost. Potsdam, Germany June 12-16.
    10. Walker, D.A. 2005. Biocomplexity of small patterned-ground features: A North American Arctic Transect. Presented at Institute of Arctic Biology Seminar. Fairbanks, AK October 28. (Oral Presentation)
    11. 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. AGU Fall Meeting, San Francisco, CA, December 5-9, 86:C24A-03. (C24A-03) (Oral Presentation)

  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. AGU Fall Meeting, San Francisco, CA, December 13-17, 85:C43B-0231. (C43B-0231) (Oral Presentation)
    2. Nicolsky, D.J., Romanovsky, V.E., Tipenko, G.S., Walker, D.A. 2004. A coupled thermo-mechanical model of differential frost heave. AGU Fall Meeting, San Francisco, CA, December 13-17, 85:C13B-0282. (C13B-0282) (Oral Presentation)
    3. Tipenko, G.S., Marchenko, S., Romanovsky, V.E., Groshev, V., Sazonova, T. 2004. Spatially Distributed Model of Permafrost Dynamics in Alaska. AGU Fall Meeting, San Francisco, CA, December 13-17, 85:C12A-02. (C12A-02) (Oral Presentation)
    4. Walker, D.A. 2004. Greening of the Arctic: A transect to monitor terrestrial change across the full Arctic bioclimate gradient. Presented at IPY Workshop. Fairbanks, AK November 29. (Oral Presentation)

  1. 2003

    1. Gonzalez, G. 2003. Biocomplexity of Frost boil Ecosystems: Educational Component. Presented at Toolik Field Station, AK June 30 - July 15. (PDF)
    2. Gould, W.A., Quijano, A., Gonzalez, G., Walker, D.A. 2003. Variation in frost-boil morphology and associated vegetation characteristics along a climatic gradient. AGU Fall Meeting, San Francisco, CA, December 8-12, 84:B31C-0311. (B31C-0311)
    3. Kelley, A.M., Epstein, H.E. 2003. Plant Community and Nitrogen Cycling in Arctic Frost-Boil Ecosystems. Presented at Toolik Field Station, AK June 30 - July 15. (PDF)
    4. Nicolsky, D.J., Tipenko, G.S., Romanovsky, V.E. 2003. Developing a numerical model of frost boils dynamics. AGU Fall Meeting, San Francisco, CA, December 8-12, 84:C21B-0813. (C21B-0813)
    5. 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. Proceedings of the Eighth International Conference on Permafrost. Lisse, 21-25 July, 2:885-890. (Complete set of PDFs) (Oral Presentation)
    6. Romanovsky, V. 2003. Permafrost, Active Layer, Soil Temperature and Moisture, Frost Heave and other Things. Presented at Toolik Field Station, AK June 30. (PDF)
    7. Shur, Y.L., Ping, C.L. 2003. The Driving Force of Frost Boils and Hummocks Formation. AGU Fall Meeting, San Francisco, CA, December 8-12, 84:C21B-0823. (C21B-0823) (Oral Presentation)
    8. Walker, D.A. 2003. Biocomplexity of frost-boil ecosystems: 2003 Expedition to Banks Island. Presented at Institute of Arctic Biology Seminar. Fairbanks, AK 2003. (Oral Presentation)
    9. 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. Presented at 54th Arctic Science Conference. Fairbanks, Alaska 22 - 24 September. (Oral Presentation)

  1. 2002

    1. Michaelson, G.J., Ping, C.L., Walker, D.A. 2002. Biogeochemistry of Soils Associated with Cryptogamic Crusts on Frost Boils. Presented at AGU Fall Meeting, San Francisco, CA, December 6-10, 83:F260.
    2. Ping, C.-L., Michaelson, G.J., Kimble, J., Shur, Y.L., Walker, D.A. 2002. Morphogenesis of soils associated with frost boils. Presented at AGU Fall Meeting, San Francisco, CA, December 6-10, 83:F259. (Oral Presentation)
    3. 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. AGU Fall Meeting, San Francisco, CA, December 6-10, 83:B72D-02. (B72D-02) (Oral Presentation)

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Posters

  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. 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)
    5. 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)
    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., 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)
    7. 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. 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)
    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. 2011. Understanding Recent Arctic Tundra Vegetation Changes. Presented at World Climate Research Programme Open Science Conference. Denver, CO October 24. (Poster)
    3. 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)
    4. 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)
    5. 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)
    6. 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)
    7. 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)
    8. 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)
    9. 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. (Oral 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. (Oral 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. 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)

  1. 2006

    1. 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)
    2. 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)
    3. 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)
    4. 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)
    5. 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. 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. 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)
    2. 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.

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This project is funded by the NSF Synthesis of Arctic System Science initiative under grant number ARC-0521180.
Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation or any other organization.

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Last modified February 6, 2015