Session: OOS 42 - The Long-Term Response of Ecosystems to Simulated Global Change


Thursday, August 6, 2009: 1:30 PM-5:00 PM
Mesilla, Albuquerque Convention Center
OOS 42 - The Long-Term Response of Ecosystems to Simulated Global Change
Ecologists have long recognized that human activities modify climate and alter the supply of limiting resources. To understand the community and ecosystem-level consequences of these changes, ecologists have developed single and multifactor experiments that modify atmospheric CO₂ and O₃ concentrations, soil nitrogen availability, temperature and precipitation. Many experiments have been in existence for over a decade. These studies can now distinguish “initial,” often-transient responses that arise from step-increase experimental approaches, from long-term responses as these systems re-equilibrate. In some cases, long-term responses have lead to important breakthroughs in our conceptual models of community organization and ecosystem function. In this organized oral session, speakers will synthesize data from long-term global change experiments and discuss how their initial ideas about ecosystem responses were challenged by long-term responses. The speakers will represent a diversity of ecosystems and experimental approaches.
Organizer:	Adrien C. Finzi, Boston University
Co-organizer:	Richard Norby, Oak Ridge National Laboratory
Moderator:	Adrien C. Finzi, Boston University
1:30 PM	OOS 42-1	Simulating the two-way feedback between terrestrial ecosystems and climate: Importance of terrestrial ecological processes on global change Takeshi Ise, Japan Agency for Marine-Earth Science and Technology, Tomohiro Hajima, Japan Agency for Marine-Earth Science and Technology, Hisashi Sato, Japan Agency for Marine-Earth Science and Technology, Tomomichi Kato, Japan Agency for Marine-Earth Science and Technology
1:50 PM	OOS 42-2	Integrating new paradigms in C and N cycling: Rhizo-accelerated mineralization and priming in an elevated CO₂ forest Richard P. Phillips, Indiana University, Adrien C. Finzi, Boston University, Emily S. Bernhardt, Duke University
2:10 PM	OOS 42-3	Long-term data from FACE experiments provide a benchmark for ecosystem response models Richard J. Norby, Oak Ridge National Laboratory
2:30 PM	OOS 42-4	Long term change in the Arctic landscape: Experiments and reality Gaius Shaver, Marine Biological Laboratory
2:50 PM	OOS 42-5	Trajectories of grassland ecosystem change in response to altered precipitation patterns A.K. Knapp, Colorado State University, Scott L. Collins, University of New Mexico, Melinda D. Smith, Yale University, John M. Blair, Kansas State University, John M. Briggs, Kansas State University, James K. Koelliker, Kansas State University
3:10 PM		Break
3:20 PM	OOS 42-6	The response of ecosystem processes to 10 years of elevated atmospheric CO₂ in a scrub oak forest and 22 years in a tidal wetland J. Patrick Megonigal, Smithsonian Environmental Research Center, Bert G. Drake, Smithsonian Environmental Research Center, Frank P. Day, Old Dominion University, P. Dijkstra, Northern Arizona University, Lee-Ann C. Hayek, Smithsonian Institution, C. Ross Hinkle, University of Central Florida, Bruce A. Hungate, Northern Arizona University, David P. Johnson, LI-COR Biosciences, Jia Hong Li, University of Centeral Florida, Gary Peresta, Smithsonian Institution, Troy Seiler, Smithsonian Environmental Research Center, Daniel B. Stover, Earthwatch Institute
3:40 PM	OOS 42-7	Lessons from two decades of FACE experiments Elizabeth A. Ainsworth, USDA ARS, Carl J. Bernacchi, USDA ARS, Andrew D.B. Leakey, University of Illinois Urbana-Champaign, Alistair Rogers, Brookhaven National Laboratory, Stephen P. Long, University of Illinois Urbana-Champaign, Donald R. Ort, USDA ARS
4:00 PM	OOS 42-8	The long-term response of peatlands to experimental warming and water table manipulation Scott D. Bridgham, University of Oregon, John Pastor, University of Minnesota - Duluth, Jake Weltzin, USA National Phenology Network, Jeffrey R. White, Indiana University, Robert D. Shannon, Pennsylvania State University, Bradley Dewey, Natural Resources Research Institute, Jason K. Keller, Chapman University
4:20 PM	OOS 42-9	Nutrient co-limitation of an annual grassland ecosystem response to elevated CO₂ Elsa Cleland, University of California, San Diego, Nona R. Chiariello, Stanford University, Hugh A.L. Henry, University of Western Ontario, Benjamin Z. Houlton, University of California, Davis, Duncan N. L. Menge, National Center for Ecological Analysis and Synthesis, Christopher B. Field, Carnegie Institution of Washington
4:40 PM	OOS 42-10	Scaling up ecosysten feedbacks to climate change: Insights from experiments and theory John Harte, University of California, Berkeley

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See more of The 94th ESA Annual Meeting (August 2 -- 7, 2009)