1:30 PM: Andersen, Gidske^*,1, ¹ Department of Biology, University of Bergen, Bergen, Norway, Corona - spy photos for change detection of arboreal vegetation in an arid cultural landscape.

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1:50 PM: Svoray, Tal^*,1, Shafran-Natan, Rakefet¹, Perevolotsky, Avi², ¹ Ben-Gurion University of the Negev, Beer-Sheva, Israel² Agricultural Research Organization - The Volcani Centre, Bet-Dagan, Israel, Unraveling primary production dynamics: A study of a semi-arid ecosystem in the slope and watershed scales.

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2:10 PM: Kaufman, Dawn^*,1, Harper, Christopher¹, Nippert, Jesse², Fay, Philip³, Blair, John¹, ¹ Kansas State University, Manhattan, KS, USA² Colorado State University, Ft. Collins, CO, USA³ Natural Resources Research Institute, Duluth, MN, USA, Ecosystem responses to rainfall quantity and variability in model grassland assemblages.

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2:30 PM: Aragón, Roxana^*,1, Oesterheld, Martín², ¹ IFEVA. Facultad de Agronomía. Cátedra de Métodos Cuantitativos Aplicados. Universidad de Buenos Aires, Buenos Aires, Argentina² IFEVA. Facultad de Agronomía. Cátedra de Ecología. Universidad de Buenos Aires, Buenos Aires, Argentina, Plant productivity responses of upland and lowland grasslands to contrasting water availability.

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2:50 PM: Chou, Wendy^*,1, Silver, Whendee¹, Jackson, Randall², Allen-Diaz, Barbara¹, ¹ University of California - Berkeley, Berkeley, CA, USA² University of Wisconsin - Madison, Madison, WI, USA, Effects of altered rainfall on carbon and nitrogen cycling in annual grassland.

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3:10 PM: , BREAK.

3:20 PM: Sherry, Rebecca^*,1, Luo, Yiqi¹, Wallace, Linda, Arnone, Jay², Verburg, Paul², Johnson, Dale², Schimel, D, ¹ University of Oklahoma, Norman, OK² Desert Research Institute, Reno, NV, Three year's data on the effects of interannual variation in temperature and precipitation on grassland production and community structure.

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3:40 PM: Köchy, Martin^*,1, Jeltsch, Florian¹, ¹ Universität Potsdam, Potsdam, Germany, Standing crop of an abundant grass species is not affected by rainfall intensity.

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4:00 PM: Knapp, Alan^*,1, Burns, Catherine², Fynn, Richard³, Smith, Melinda ², ¹ Colorado State University, Ft. Collins, CO² Yale University, New Haven, CT³ University of KwaZulu-Natal, Pietermaritzburg, South Africa, Convergence and contingency in production-precipitation relationships in North American and South African C₄ savanna grasslands.

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4:20 PM: Gray, Dennis^*,1, Cardon, Zoe¹, Lewis, Louise¹, ¹ University of Connecticut, Storrs, CT, USA, Desiccation tolerance and photoprotection in desert green algae.

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4:40 PM: Ziska, Lewis^*,1, ¹ Crop Systems and Global Change Laboratory, Beltsville, Maryland, USA, Assessing the response of common ragweed (Ambrosia artemissiifolia L.) to climate change at multiple scales: a six year study.

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