Thursday, August 5, 2010: 1:30 PM-5:00 PM
310-311, David L Lawrence Convention Center
OOS 47 - Stressing Out: Ecological Responses of Plants to a Changing Environment
In a changing environment, plants and plant-based communities must be able to acclimate to increasingly severe stresses. This session will focus on plant responses to global change, from molecular and physiological mechanisms of phenotypic plasticity to resulting changes in plant ecology. In particular, the session will explore how plant responses to environmental pollutants affect their ecological interactions with primary consumers (i.e., herbivores) and belowground mutualists. The speakers have been selected to highlight a number of key components of global change and their impact on plant ecology. First, since there are many contributing factors to global change, the speakers will collectively address effects of three key atmospheric factors: elevated carbon dioxide, elevated ozone, and increased nitrogen deposition. Second, as global change does not discriminate taxonomically, the speakers will also cover a range of taxonomic plant diversity, including woody and herbaceous species. Agricultural plants are also subject to a changing environment, and the session includes an agroecological perspective on global change. Third, plant ecological interactions occur both above and below ground, and speakers will address the diverse ecological effects of global change that occur in leaves and roots alike. Finally, predicting the ecological outcomes of plant-based communities and ecosystems in a changing world requires a mechanistic understanding of how plants respond to environmental variation. While maintaining an ecological focus, a number of the speakers in this session will provide a mechanistic view of plant responses to global change. These speakers will bring genomic resources and techniques to bear to describe molecular and physiological regulation of plant responses to global change. The session will start by exploring plant responses to elevated CO2, which is considered a central contributor to global warming. Then, the session will highlight effects of ozone pollution and nitrogen deposition. The session will end by presenting a broad look at global patterns of plant response to environmental change and to highlight future directions for focused research.
Organizer:	Christopher J. Frost, Pennsylvania State University
Moderator:	Christopher J. Frost, Pennsylvania State University
1:30 PM	OOS 47-1		Reproductive thermoregulation in an ectotherm: Under what conditions is it adaptive in Plantago lanceolata? Elizabeth Lacey, University of North Carolina, Greensboro
1:50 PM	OOS 47-2		The effects of drought on host plant canopy condition and survival of the endangered Astragalus jaegerianus (Fabaceae) Thomas R. Huggins, University of California Los Angeles, Barry A. Prigge, University of California, Los Angeles, Rasoul Sharifi, University of California, Los Angeles, Philip W. Rundel, University of California, Los Angeles
2:10 PM	OOS 47-3		Mid-Atlantic barrier island forest structural properties, and the use of site gradient expression and growth data to predict changes due to sea level rise Mike O'Connell, University of Maryland, Hank Shugart, University of Virginia
2:30 PM	OOS 47-4		Ozone pollution compromises plant defense responses to insect herbivory Joshua R. Herr, Penn State University, Christopher J. Frost, Pennsylvania State University, Teodora Orendovici-Best, Penn State University, John E. Carlson, Penn State University
2:50 PM	OOS 47-5		Elevated carbon dioxide alters plant defenses and trophic interactions in an agro-ecosystem Evan H. DeLucia, University of Illinois
3:10 PM			Break
3:20 PM	OOS 47-6		Consequences of atmospheric change for plant-insect interactions in forest ecosystems Michael L. Hillstrom, University of Wisconsin-Madison, John J. Couture, University of Wisconsin-Madison, Timothy D. Meehan, University of Wisconsin-Madison, Edward B. Mondor, Georgia Southern University, Richard L. Lindroth, University of Wisconsin-Madison
3:40 PM	OOS 47-7		Effects of elevated CO2 and aboveground herbivory on belowground defense and mycorrhizal interactions Rachel L. Vannette, University of Michigan, Mark D. Hunter, University of Michigan
4:00 PM	OOS 47-8		Acid soil stress compromises sugar maple induced resistance against an invasive insect herbivore Jennifer M. Dean, The Pennsylvania State University, Christopher J. Frost, Pennsylvania State University, Mark Mescher, The Pennsylvania State University, Jonathan P. Lynch, Penn State, Consuelo De Moraes, The Pennsylvania State University
4:20 PM	OOS 47-9		Broader consequences of variable snow depth on plant-insect interactions with Artemisia tridentata Sharon J. Martinson, University of California, Santa Cruz, Elizabeth M. Wolkovich, NCEAS, Karthik Ram, University of California, Davis, Michael E. Loik, University of California
4:40 PM	OOS 47-10		A global perspective on below-ground carbon dynamics under nitrogen enrichment Lingli Liu, National Center for Environmental Assessment, U.S. Environmental Protection Agency, Tara L. Greaver, US Environmental Protection Agency

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See more of The 95th ESA Annual Meeting (August 1 -- 6, 2010)