Wednesday, August 4, 2010: 8:00 AM-11:30 AM
310-311, David L Lawrence Convention Center
OOS 26 - The Effects of Abiotic, Biotic and Human Influences on Soil Greenhouse Gas Fluxes Across Varied Environments.
This session is in accordance with the emphasis of the 95th ESA conference on the past and future of global warming. Numerous greenhouse gases are both created and consumed by microorganisms within the soil. There are a wide variety of microorganisms which mediate these transformations, about which we are only just beginning to learn. This emerging field benefits from both the collection of new data on these microorganisms and the synthesis of previously published data to ask new questions. This field would not be in the forefront that it is today if previous generations of scientists had not called the public’s attention to the increasing threat of global warming. Now the nation and the world are listening to what scientists find on the matter, and there is much to be learned from the microorganisms on this topic. The speakers in this session do either in situ, laboratory or synthesis research on soil microbially-mediated gas fluxes relevant to global warming, with particular emphasis on the effects of environmental variability on the fluxes of methane and nitrogenous gases.
Organizer:Emma L. Aronson, University of Pennsylvania
Co-organizers:Aurora Macrae-Crerar, University of Pennsylvania
Ben W. Sullivan, Northern Arizona University
Moderator:Aurora Macrae-Crerar, University of Pennsylvania
8:00 AMOOS 26-1Impacts of an African Green Revolution on greenhouse gas emissions: Fertilizer-N2O response functions in a maize agroecosystem in Maseno, Kenya
Jonathan Hickman, The Earth Institute at Columbia University, Cheryl Palm, Earth Institute at Columbia University, Patrick K. Mutuo, The Earth Institute at Columbia University, Jianwu Tang, Marine Biological Laboratory, Jerry M. Melillo, Marine Biological Laboratory
8:20 AMOOS 26-2Soil warming and N2O production and consumption: Differential enzymatic responses?
Sharon A. Billings, University of Kansas, Lisa K. Tiemann, University of Kansas
8:40 AMOOS 26-3Plant ecophysiology and soil microorganisms control the time-lagged response of ecosystem respiration to environmental change
Yann Salmon, University of Zürich, Romain L. Barnard, University of California, Berkeley, Nina Buchmann, ETH Zurich
9:00 AMOOS 26-4Tree species influence on soil greenhouse gas fluxes in tropical plantation monoculture and diverse forest
Joost van Haren, University of Arizona, Raimundo Cosme de Oliveira Jr., EMBRAPA Amazônia Oriental, Michael Keller, NEON Inc., Scott R. Saleska, University of Arizona
9:20 AMOOS 26-5Soil microbial responses to a subambient to elevated gradient of atmospheric CO2
Alexia M. Kelley, Duke University, Andrew C. Procter, Duke University, Richard A. Gill, Brigham Young University, Philip A. Fay, USDA, Agricultural Research Service, H. Wayne Polley, USDA, Agricultural Research Service, Robert B. Jackson, Duke University
9:40 AM Break
9:50 AMOOS 26-6Examining plant composition to predict methane emissions from flooded sediments
Jenny Kao-Kniffin, University of Wisconsin-Madison, Teri C. Balser, University of Wisconsin-Madison
10:10 AMOOS 26-7The effects of plant community composition and redox on the fates of nitrate in a coastal wetland
Whendee Silver, University of California, Berkeley, Bibit Traut, City College of San Francisco, Wendy Yang, University of California, Berkeley
10:30 AMOOS 26-8The effect of drainage, nitrogen additions and environment on Pine forest methane flux
Emma L. Aronson, University of Pennsylvania, Brent Helliker, University of Pennsylvania
10:50 AMOOS 26-9Global patterns and response functions of N effects on biogenic GHG flux
Tara L. Greaver, US Environmental Protection Agency, Lingli Liu, National Center for Environmental Assessment, U.S. EPA
11:10 AMOOS 26-10Modeling net methane emissions from global terrestrial biosphere
Qianlai Zhuang, Purdue University

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