8:00 AM Kubiske, Mark^*,1, McDonald, Evan¹, Marquardt, Paula¹, King, John², Zak, Don³, Pregitzer, Kurt², Holmes, Bill³, Karnosky, David², ¹ US Forest Service, Rhinelander, WI² Michigan Technological University, Houghton, MI³ University of Michigan, Ann Arbor, MI Does elevated CO₂ alter growth allometry of northern tree species?

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8:15 AM Vile, Melanie^*,1, Matson, Pamela², Hedin, Lars¹, ¹ Department of Ecology and Evolutionary Biology, Princeton, NJ, USA² Department of Geological and Environmental Sciences, Stanford, CA, USA Thermodynamic controls on soil trace gas (CH₄, CO₂, N₂O) fluxes from the Maui rainfall gradient.

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8:30 AM Funk, Jennifer^*,1, Jones, Clive², Lerdau, Manuel ¹, Gray, Dennis¹, Throop, Heather³, Hyatt, Laura⁴, ¹ State University of New York, Stony Brook, NY² Institute of Ecosystem Studies, Millbrook, NY³ Beloit College, Beloit, WI⁴ Rider University, Lawrenceville, NJ Variation in isorpene emission from Quercus rubra: sources, causes and consequences for estimating fluxes.

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8:45 AM Smith, James^*,1, Hare, J Daniel¹, ¹ University of California - Riverside, Riverside, CA Gas exchange and water use efficiency of glandular and non-glandular trichome types in Datura wrightii (Solanaceae).

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9:00 AM Keller, Emily^*,1, Anekonda, Thimmappa², Smith, Bruce¹, Hansen, Lee ¹, St. Clair, J. Brad³, Criddle, Richard¹, ¹ Brigham Young University, Provo, Utah² Oregon State University, Corvallis, Oregon³ USDA Forest Service, Corvallis, Oregon Stress and respiration traits differ among four geographically distinct Pinus ponderosa seed sources.

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9:15 AM Augspurger, Carol^*,1, Cheeseman, John¹, Salk, Carl¹, ¹ University of Illinois, Urbana, IL Potential for carbon gain by understory plants via phenological avoidance of canopy shade.

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9:30 AM Break.

9:45 AM Eissenstat, David^*,1, Wang, Liqin^{1, 2}, ¹ Penn State University, University Park, PA, USA² Shandong Agricultural University, Tian, Shandong, China Physiological responses of roots to pulses of nutrients.

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10:00 PM Spicer, Rachel^*,1, Holbrook, Noel¹, ¹ Harvard University, Cambridge, MA Effects of within-stem gas concentrations on sapwood physiology: Implications for sapwood aging and senescence.

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10:15 AM Breen, Amanda^*,1, Richards, James¹, ¹ University of California, Davis, Davis, CA Water and nutrient limitations affect seed number, size, and quality: Implications for establishment of two desert shrubs.

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10:30 AM Dermody, Orla¹, Long, Stephen¹, DeLucia, Evan¹, ¹ University of Illinois, Urbana -Champaign, Illinois Canopy development of soybeans grown in elevated [CO₂ ] and [O₃].

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10:45 AM Leakey, Andrew^*,1, Davey, Phillip², Allen, Damian³, Rogers, Alistair⁴, DeLucia, Evan¹, Drake, Bert⁵, Murthy, Ramesh⁶, Long, Steve¹, ¹ University of Illinois, Urbana, IL² University of Essex, Colchester, Essex, UK³ BASF Plant Science, Research Triangle Park, NC⁴ Brookhaven National Laboratory, Upton, NY⁵ Smithsonian Environmental Research Center, Edgewater, MD⁶ Columbia University Biosphere 2, Oracle, AZ How will leaf respiration respond to growth under elevated [CO₂] in three diverse tree canopies?

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