[UNKNOWN: PRESTIME] Ruhland, Christopher^*,1,2, Xiong, Fusheng², Clark, W. Dennis², Day, Thomas², ¹ Minnesota State University, Mankato, MN² Arizona State University, Tempe, AZ. The effects of solar UV-B on growth and phenylpropanoids of Deschampsia antarctica.

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[UNKNOWN: PRESTIME] DAY, THOMAS^*,1, RUHLAND, CHRISTOPHER¹, XIONG, FUSHENG¹, ¹ Arizona State University, Tempe, AZ. Four years of warming enhances biomass and seed production, and litter accumulation in Antarctic tundra.

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[UNKNOWN: PRESTIME] GOUGH, LAURA^*,1, HOBBIE, SARAH², ¹ University of Alabama, Tuscaloosa² University of Minnesota, St. Paul. Effects of four years of warming and fertilization on species-rich moist non-acidic tundra in Alaska.

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[UNKNOWN: PRESTIME] Klein, Julia^*,1, Zhao, Xin-Quan², Harte, John¹, ¹ University of California, Berkeley, CA² Northwest Plateau Institute of Biology, Xining, Qinghai, China. The effects of experimental warming on vegetative biomass and plant species richness on the Tibetan plateau.

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[UNKNOWN: PRESTIME] Bowdish, Sarah^*,1, Wallace, Linda¹, Luo, Yiqi¹, Wan, Shiqiang¹, ¹ University of Oklahoma, Norman, Oklahoma. Effects of warming and clipping on plant species composition in the tallgrass prairie.

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[UNKNOWN: PRESTIME] . Break.

[UNKNOWN: PRESTIME] Ababneh, Linah^*,1, ¹ Graduate Associate in Research, Tucson, AZ. Variability in carbon and nitrogen isotope composition of bristlecone pine leaves along an altitude gradient .

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[UNKNOWN: PRESTIME] Belote, R.^*,1, Weltzin, Jake¹, Norby, Richard², ¹ University of Tennessee, Knoxville, Tennessee² Oak Ridge National Laboratory, Oak Ridge, Tennessee. Plant communities, exotic invaders, and the role of elevated CO₂ .

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[UNKNOWN: PRESTIME] MCDONALD, EVAN^*,1, KRUGER, ERIC², ISEBRANDS, JUD¹, ¹ USDA-Forest Service, Rhinelander, WI² University of Wisconsin-Madison, Madison, WI. Competition and growth in aggrading aspen stands exposed to elevated CO₂ and tropospheric ozone.

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