1:30 PM: Inouye, David^{1, 2}, ¹ Rocky Mountain Biological Laboratory, Crested Butte, CO, USA² Dept. of Biology, College Park, MD, USA, Phenology and abundance of flowering in two early-season high-altitude Brassicaceae, Thlaspi montanum and Draba aurea, are influenced by environmental variables and climate change.

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1:50 PM: Mitchell, Matthew^*,1, Hik, David¹, Cahill, James¹, ¹ University of Alberta, Edmonton, AB, Canada, Interactions between plant competition, herbivory, and abiotic stress in an arctic-alpine community.

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2:10 PM: Gianelle, Damiano^*,1, Vescovo, Loris^*,1, ¹ Centro di Ecologia Alpina, Trento, Italy, Remote sensing and grassland biomass estimation at multiple spatial scales in an alpine grassland.

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2:30 PM: Ebert-May, Diane ^*,1, Tweedie, Craig², Weber, Everett¹, ¹ Michigan State University, East Lansing² University of Texas at El Paso, El Paso, Species change over thirty years on the alpine tundra, Niwot Ridge, Colorado.

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2:50 PM: Lantz, Trevor^*,1, Gergel, Sarah^*,1, Henry, Greg^*,1, ¹ University of British Columbia, Vancouver, BC, Canada, Synergistic responses to climate change: Are they evident for green alder at treeline in the Mackenzie Delta, NWT?

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3:10 PM: , BREAK.

3:20 PM: Grogan, Paul^*,1, Jonasson, Sven ², ¹ Queen's University, Kingston, Ontario, Canada² University of Copenhagen, Copenhagen, Denmark, Ecosystem CO₂ production during winter in the Swedish sub-arctic: The relative importance of climate and vegetation-type.

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3:40 PM: Germino, Matthew^*,1, Maher, Eliza¹, Blanch, Kevin¹, Graumlich, Lisa², ¹ Idaho State University, Pocatello, ID² Montana State University, Bozeman, MT, Cross-scale analyses of spatio-temporal variation in tree establishment and coexistence among alpine treelines.

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4:00 PM: Tews, Joerg^*,1, Ferguson, Michael², Fahrig, Lenore¹, ¹ Geomatics and Landscape Ecology Research Laboratory (GLEL), Ottawa, Ontario, Canada² Nunavut Wildlife Service, Pond Inlet, Nunavut, Canada, Assessing the impact of climate change-induced catastrophic disturbances for population viability of the endangered Peary caribou in the Canadian High Arctic.

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4:20 PM: Schortemeyer, Marcus^*,1, Bruhn, Dan¹, Ball, Marilyn¹, ¹ Ecosystem Dynamics Group, Canberra, ACT, Australia, Global warming in the Sub-Antarctic: Temperature response and temperature acclimation of plants from Heard Island.

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