1:30 PM: Ouyang, Hua^*,1, Zhou, Caiping², Zhao, Xinquan, Zhang, Xianzhou, Cheng, Genwei, Luo, Tianxiang, ¹ Institute of geographical Sciences and Natural Resources, Chinese Academy of Sciences, Beijing, China² Institute of geographical Sciences and Natural Resources, Chinese Academy of Sciences, Beijing, China, Carbon Dynamics of Major Ecosystems in the Tibetan Plateau.

FULL ABSTRACT

1:50 PM: Nobrega, Sonia^*,1, Grogan, Paul¹, ¹ Queen's University, Kingston, Ontario, Canada, Investigating carbon cycling in tundra ecosystems on a naturally varying moisture gradient.

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2:10 PM: Vogel, Jason¹, Schuur, Edward¹, Crummer, K. Grace¹, ¹ University of Florida, Gainesville, FL, The impact of permafrost thawing and subsequent vegetation change on the seasonal C dynamics of an arctic tundra ecosystem.

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2:30 PM: FORD, Jesse^*,1, Allen-Gil, Susan², Muir, Derek³, Akpik, Maasak⁴, Nashaknik, Joshua⁵, Matumeak, Warren⁵, ¹ Oregon State University, Corvallis, OR, USA² Ithaca College, Ithaca, NY, USA³ National Water Resources Institute, Burlington, Ontario, Canada⁴ Translator, Barrow, AK, USA⁵ Expert whitefish fisherman, Barrow, AK, USA, Contaminant biogeochemistry in freshwater Arctic Alaskan ecosystems: The role of biota.

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2:50 PM: Björk, Robert¹, Majdi, Hooshang², Klemedtsson, Leif¹, Molau, Ulf¹, ¹ Botanical Institute, Göteborg University, Göteborg, Sweden² Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences, Uppsala, Sweden, Root architecture and nutrient allocation in tundra plants.

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3:10 PM: , BREAK.

3:20 PM: McKnight, Diane^*,, Tate, Cathy, Niyogi, Dev, Andrews, Edmund, Lyons, Berry, , Reactivation of a cryptobiotic stream ecosystem in the McMurdo Dry Valleys, Antarctica: a long-term geomorphological experiment.

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3:40 PM: Edwards, Kate¹, Jefferies, Robert¹, ¹ University of Toronto, Toronto, Ontario, Canada, Plant and microbial utilization of nitrogen and phosphorus in Arctic freshwater sedge meadows.

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4:00 PM: Buckeridge, Kate^*,1, Jefferies, Robert², ¹ Queen's University, Kingston, Ontario, Canada² University of Toronto, Toronto, Ontario, Canada, Plant and microbial seasonal uptake of inorganic nitrogen in a degraded arctic salt marsh.

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4:20 PM: Handa, I. Tanya^*,1, Hagedorn, Frank², Hättenschwiler, Stephan^{1, 3}, ¹ University of Basel, Basel, Switzerland² Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland³ Center of Functional Ecology and Evolution (CEFE-CNRS), Montpellier, France, Below-ground responses to in situ CO₂ enrichment at the Swiss alpine treeline.

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4:40 PM: Breen, Katie^*,1, Lévesque, Esther¹, ¹ Département de chimie-biologie, Trois-Rivières, Québec, Canada, Do biological soil crusts facilitate colonization of vascular plants on a high arctic glacier foreland?

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