94th ESA Annual Meeting (August 2 -- 7, 2009)

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
Organizer:
Adrien C. Finzi
Co-organizer:
Richard Norby
Moderator:
Adrien C. Finzi
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.
1:30 PM
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
Integrating new paradigms in C and N cycling: Rhizo-accelerated mineralization and priming in an elevated CO2 forest
Richard Phillips, Indiana University; Adrien C. Finzi, Boston University; Emily Bernhardt, Duke University
2:30 PM
Long term change in the Arctic landscape: Experiments and reality
Gaius Shaver, Marine Biological Laboratory
2:50 PM
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 Smith, Colorado State University; John Blair, Kansas State University; John M. Briggs, Kansas State University; James K. Koelliker, Kansas State University
3:10 PM
3:20 PM
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 Stover, US Department of Energy
3:40 PM
Lessons from two decades of FACE experiments
Elizabeth A. Ainsworth, USDA ARS & University of Illinois Urbana-Champaign; Carl J. Bernacchi, University of Illinois; Andrew D.B. Leakey, University of Illinois Urbana-Champaign; Alistair Rogers, Brookhaven National Laboratory; Stephen P. Long, University of Illinois at Urbana-Champaign; Donald R. Ort, USDA-ARS and University of Illinois
4:00 PM
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, US Geological Survey; 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
Nutrient co-limitation of an annual grassland ecosystem response to elevated CO2
Elsa Cleland, University of California San Diego; Nona R. Chiariello, Jasper Ridge Biological Preserve, Stanford University; Hugh Henry, University of Western Ontario; Benjamin Z. Houlton, University of California, Davis; Duncan N. L. Menge, Princeton University; Christopher Field, Stanford University
See more of: Organized Oral Session