Tuesday, August 3, 2010: 8:00 AM-11:30 AM
Blrm BC, David L Lawrence Convention Center
SYMP 6 - Extreme Climatic Events: Perspectives on their Ecological Role and Approaches for Future Research
An increase in the magnitude and frequency of climate extremes has been recognized as a critical manifestation of climate change by the IPCC due to the potential for extreme events to have large and widespread impacts on organisms and ecosystems, as well as significant economic costs and consequences for human welfare. There is mounting evidence that the frequency and severity of extreme climatic events is already increasing in many regions, and global warming is only expected to further increase both the probability of occurrence and magnitude of these events over the next century. While there have been numerous studies examining the effects of changes in climate means on ecological processes and ecosystems, research on extreme climatic events is less common perhaps because such research is much more challenging. Despite the difficulties of such research, efforts at increasing our understanding of this critical aspect of climate change have been made through paleo-, observational and experimental approaches. We believe that the time is now ripe to bring together this disparate research community to (1) assess and integrate our knowledge of the ecological role of extreme climatic events, (2) identify gaps in our understanding and (3) set a research agenda for the future that includes recommendations on the types of research approaches needed to further our understanding of ecosystem responses to this key aspect of climate change. Our symposium is designed to accomplish these goals by bringing together speakers from meteorological and paleo-ecological disciplines, as well as ecologists who are actively studying the ecological impacts of climate extremes through observational and manipulative approaches from a broad range of perspectives. We will provide an integrative structure for each talk, and the symposium as a whole, by asking each speaker to not only synthesize their unique research efforts, but to also identify the critical knowledge gaps we face and the research approaches needed to better understand this pervasive component of climate change.
Organizer:Melinda D. Smith, Yale University
Co-organizer:Alan K. Knapp, Colorado State University
Moderator:Alan K. Knapp, Colorado State University
8:00 AMIntroductory remarks
8:05 AMClimate extremes and ecological responses in the paleo-record
John W. (Jack) Williams, University of Wisconsin, Madison, Jessica L. Blois, University of Wisconsin-Madison
8:20 AMGlobal warming, extreme drought events and tree mortality: Ecological transformations, mechanisms, impacts, and uncertainties
Henry D. Adams, University of Arizona, Maite Guardiola-Claramonte, University of Arizona, Greg A. Barron-Gafford, University of Arizona, David D. Breshears, The University of Arizona, Matthew J. Germino, Idaho State University, Chris B. Zou, Oklahoma State University, Darin J. Law, University of Arizona, Neil Cobb, Northern Arizona University, Travis E. Huxman, University of Arizona
8:35 AMBaseline phenological asynchrony alters vulnerability of interacting species to extreme climatic events
Michael C. Singer, University of Texas, Camille Parmesan, University of Texas
8:50 AMSpecies, community and ecosystem responses to climate extremes in grasslands and tundra
Ivan Nijs, University of Antwerpen
9:05 AMThe importance of plant diversity for resistance and resilience to drought in temperate grasslands
Jasper Van Ruijven, Wageningen University
9:20 AMDiscussion
9:35 AMBreak
9:45 AMThe role of genetic and species diversity in ecosystem response to climatic extremes
Carl Beierkuhnlein, University of Bayreuth
10:00 AMEffects of extreme weather events on ecosystem function
Anke Jentsch, University of Koblenz-Landau
10:15 AMThe role of grassland plant species composition in defining synchronous and lagged responses of NPP and net ecosystem CO2 balance to interannual temperature variability
Jay Arnone, Desert Research Institute,, Annmarie Lucchesi, University of Nevada-Reno, Richard Jasoni, Desert Research Institute,, Jessica Larsen, Desert Research Institute,, Elizabeth A. Leger, University of Nevada, Reno, Rebecca A. Sherry, University of Oklahoma, Linda L. Wallace, University of Oklahoma, Yiqi Luo, University of Oklahoma, Paul S.J. Verburg, Desert Research Institute
10:30 AMManaged ecosystem responses to climate extremes: current approaches and future directions
Carl J. Bernacchi, University of Illinois/USDA-ARS
10:45 AMFuture approaches to climate extremes research
Melinda D. Smith, Yale University
11:00 AMPanel discussion
11:25 AMConcluding remarks

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