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

OOS 26 - The Effects of Abiotic, Biotic and Human Influences on Soil Greenhouse Gas Fluxes Across Varied Environments.

Wednesday, August 4, 2010: 8:00 AM-11:30 AM
310-311, David L Lawrence Convention Center
Emma L. Aronson
Aurora MacRae-Crerar and Ben Sullivan
Aurora MacRae-Crerar
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.
8:00 AM
Impacts 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, Agriculture and Food Security Center, The Earth Institute, Columbia University; Patrick K. Mutuo, The Earth Institute at Columbia University; Jianwu Tang, Marine Biological Laboratory; Jerry M. Melillo, Marine Biological Laboratory
8:20 AM
Soil warming and N2O production and consumption: Differential enzymatic responses?
Sharon A. Billings, University of Kansas; Lisa K. Tiemann, University of Kansas
8:40 AM
Plant 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, Institute of Agricultural Science, ETH Zurich
9:00 AM
Tree species influence on soil greenhouse gas fluxes in tropical plantation monoculture and diverse forest
Joost van Haren, University of Arizona; Raimundo Cosme de Oliveira, Embrapa; Michael Keller, NEON Inc.; Scott R. Saleska, University of Arizona
9:20 AM
Soil microbial responses to a subambient to elevated gradient of atmospheric CO2
Alexia M. Kelley, North Carolina State 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; Rob Jackson, Stanford and Duke universities
9:40 AM
9:50 AM
Examining plant composition to predict methane emissions from flooded sediments
Jenny Kao-Kniffin, Cornell University; Teri C. Balser, University of Florida-Gainesville
10:10 AM
The effects of plant community composition and redox on the fates of nitrate in a coastal wetland
Whendee Silver, University of California; Bibit Traut, City College of San Francisco; Wendy Yang, University of California, Berkeley
10:30 AM
The 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 AM
Global patterns and response functions of N effects on biogenic GHG flux
Tara L. Greaver, US Environmental Protection Agency; Lingli Liu, Institute of Botany, Chinese Academy of Sciences
See more of: Organized Oral Session