95th ESA Annual Meeting (August 1 -- 6, 2010)

OOS 47 - Stressing Out: Ecological Responses of Plants to a Changing Environment

Thursday, August 5, 2010: 1:30 PM-5:00 PM
310-311, David L Lawrence Convention Center
Christopher J. Frost
Christopher J. Frost
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.
1:50 PM
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
2:30 PM
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
Elevated carbon dioxide alters plant defenses and trophic interactions in an agro-ecosystem
Evan H. DeLucia, University of Illinois at Urbana-Champaign
3:10 PM
3:20 PM
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, The Nature Conservancy; Edward B. Mondor, Georgia Southern University; Richard L. Lindroth, University of Wisconsin
3:40 PM
Effects of elevated CO2 and aboveground herbivory on belowground defense and mycorrhizal interactions
Rachel L. Vannette, Stanford University; Mark D. Hunter, University of Michigan
4:00 PM
Acid soil stress compromises sugar maple induced resistance against an invasive insect herbivore
Jennifer M. Dean, The Nature Conservancy; Christopher J. Frost, Pennsylvania State University; Mark Mescher, The Pennsylvania State University; Jonathan P. Lynch, The Pennsylvania State University; Consuelo De Moraes, The Pennsylvania State University
4:20 PM
Broader consequences of variable snow depth on plant-insect interactions with Artemisia tridentata
Sharon J. Martinson, University of California; Elizabeth M. Wolkovich, Harvard University; Karthik Ram, University of California, Berkeley; Michael Loik, University of California
4:40 PM
A global perspective on below-ground carbon dynamics under nitrogen enrichment
Lingli Liu, Institute of Botany, Chinese Academy of Sciences; Tara L. Greaver, US Environmental Protection Agency
See more of: Organized Oral Session