8:00 AM Wright, Allen^{*,1, 2}, Murthy, Ramesh^{1, 2}, Barron-Gafford, Greg², Grieve, Katie², Paige, Terence², Patterson, Randy², Griffin, Kevin¹, ¹ Columbia University, Palisades, NY, USA² Biosphere 2 Center, Oracle, AZ, USA Biosphere2 Center - A large scale controlled environment facility for experimental science.

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8:15 AM Klimas, Christie^*,1, Potosnak, Mark², Murthy, Ramesh¹, Griffin, Kevin³, ¹ Biosphere 2 Center, Oracle, AZ, USA² N.C.A.R., Boulder, CO, USA³ Columbia University, Palisades, NY, USA Light use efficiency in a non-nutrient limiting environment.

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8:30 AM Walter, Achim^*,1, Christ, Maja^{1, 2}, Barron-Gafford, Greg¹, Murthy, Ramesh¹, ¹ Biosphere 2 Center, Oracle, AZ, USA² Forschungszentrum Julich, Julich, Germany Diurnal leaf growth variations in Populus deltoides grown at different external CO₂ -concentrations.

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8:45 AM TBA.

9:00 AM Lin, Guanghui^{*,1, 2}, van Haren, Joost¹, Pierce, Danielle¹, Morris, Tiffany¹, Wright, Allen¹, Berry, Joseph³, ¹ Biosphere 2 Center, Oracle, Arizona, USA² Lamont Doherty Earth Observatory, Palisades, New York, USA³ Department of Global Ecology, Stanford, California, USA Responses of ecosystem gas exchanges to simulated drought disturbance in a rainforest mesocosm.

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9:15 AM Barron-Gafford, Greg^*,1, Grieve, Katie¹, Paige, Terence¹, Bobich, Edward¹, Patterson, Randy¹, Marshall, John², Murthy, Ramesh¹, ¹ Biosphere 2 Center, Oracle, AZ, USA² University of Idaho, Moscow, ID, USA Influence of drought and VPD on net ecosystem carbon exchange and CO₂ uptake of cottonwoods.

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9:30 AM Grieve, Katie^*,1, Barron-Gafford, Greg¹, Bobich, Edward¹, Patterson, Randy¹, Marshall, John², Murthy, Ramesh¹, ¹ Biosphere 2 Center, Oracle, AZ, USA² University of Idaho, Moscow, ID, USA Canopy transpiration and conductance during increasing soil water stress and cycles of VPD.

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9:45 AM Break.

10:00 AM Pegoraro, Emiliano¹, Murthy, Ramesh¹, Barron-Gafford, Greg¹, Grieve, Katie, VanHaren, Joost, ¹ Biosphere 2 Center, Oracle, AZ, USA Effect of CO₂ and VPD on isoprene emissions during drought in a Populus deltoides ecosystem.

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10:15 AM Dane, Laura^*,1, Lipson, David¹, Strahm, Spring¹, Wilson, Richard¹, Murthy, Ramesh², Barron-Gafford, Greg², ¹ Department of Biology, San Diego, CA² Columbia University, Oracle, AZ Effects of elevated atmospheric CO₂ on soil microbes in the Intensive Forestry Biome of Biosphere2.

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10:30 AM Marshall, John¹, Gafford-Barron, Greg², Grieve, Katie², Murthy, Ramesh², ¹ Dept. of Forest Resources, Moscow, ID, USA² Biosphere II, Tucson, Arizona, USA Toward an isotopic mass-balance for carbon for cottonwood (Populus deltoides) plantations grown under CO₂-enrichment inside Biosphere II, Arizona.

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10:45 AM Trueman, Rebecca^*,1, Murthy, Ramesh², Yakir, Dan³, Marshall, John⁴, Berry, Joseph⁵, Gonzalez-Meler, Miquel ¹, ¹ University of Illinois at Chicago, Chicago, IL, USA² Columbia University Biosphere 2 Center, Oracle, AZ, USA³ Weizmann Institute of Science, Rehovot, Israel, Israel⁴ University of Idaho, Moscow, Idaho, USA⁵ Carnegie Institute of Washington, Washington, DC, USA A novel methodology for estimating mean residence times of ecosystem carbon pools.

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