8:30 AM Harley, Christopher^*,1, Hunt, Luke¹, Paine, Robert², ¹ Hopkins Marine Station, Pacific Grove, CA, USA² University of Washington, Seattle, WA, USA Seemingly gradual changes in climate provoke punctuated biological responses.

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8:45 AM Dukes, Jeffrey^*,1, Shaw, M.^{1, 2}, Chiariello, N.³, Field, C.¹, ¹ Carnegie Institution of Washington, Stanford, CA, USA² The Nature Conservancy of California, San Francisco, CA, USA³ Department of Biological Sciences, Stanford, CA, USA Grassland productivity responses to individual and combined global changes: four years at Jasper Ridge.

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9:00 AM Wallace, Linda^*,1, Sherry, Rebecca¹, Luo, Yiqi¹, Zehrbach, Nancy¹, Wan, Shiqiang², ¹ University of Oklahoma, Norman, OK² Oak Ridge National Laboratory, Oak Ridge, TN Phenological response of tallgrass prairie to experimental warming and clipping.

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9:15 AM Pederson, Neil^*,1, Jacoby, Gordon¹, Cook, Ed¹, ¹ Tree-Ring Laboratory, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY Recent growth increases of northern range margin trees: Disturbance, climatic, and site interactions.

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9:30 AM Lawson, Dawn^*,1, Zedler, Paul², Reiley, David², ¹ U.S. Navy, San Diego, California, USA² University of Wisconsin, Madison, Wisconsin, USA Patterns of recruitment and mortality in mixed coast live and Engelmann oak woodlands in southern California.

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9:45 AM Kulakowski, Dominik^*,1, Veblen, Thomas¹, ¹ University of Colorado - Boulder, Boulder, CO The persistence of quaking aspen (Populus tremuloides) in west-central Colorado.

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10:00 AM Break.

10:15 AM Camill, Phil^*,1, Adams, Julian², Limmer, Jacob¹, Kalim, Sahir¹, Rafert, Greg¹, Middleman, Rosali¹, Andreassi, Chris¹, ¹ Carleton College, Northfield, MN² University of Virginia, Charlottesville, VA Population, community, and ecosystem-level constraints on Picea mariana establishment in boreal peatlands following permafrost thaw.

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10:30 AM Yanosky, Thomas^*,1, Kroes, Daniel¹, ¹ US Geological Survey, Reston, VA, USA Impact of saline intrusion upon growth of loblolly pines, Blackwater National Wildlife Refuge, Maryland USA.

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10:45 AM Strengbom, Joachim^{*,1, 2}, Englund, Göran¹, Ericson, Lars¹, ¹ Department of Ecology and Environmental Science, Umeå, Sweden, Sweden² Present address: Department of Forest Resources, St. Paul, Minnesota, USA Experimental scale and precipitation modify effects of N-deposition on a plant pathogen.

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11:00 AM Potts, Daniel^*,1, Huxman, Travis¹, Enquist, Brian¹, Weltzin, Jake², Williams, David³, ¹ University of Arizona, Tucson, AZ² University of Tennessee, Knoxville, TN³ University of Wyoming, Laramie, WY Multivariate analysis of ecosystem response to precipitation pulses.

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11:15 AM Williams, John¹, Seabloom, Eric¹, Slayback, Daniel², Stoms, David¹, Shafer, Sarah³, Bartlein, Patrick⁴, ¹ University of California Santa Barbara, Santa Barbara, CA² University of Maryland, College Park, MD³ US Geological Survey, Corwallis, OR⁴ University of Oregon, Eugene, OR Have human activities altered productivity-diversity relationships in California?

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