63 Soil Respiration: From Human to Geologic Time Scales

Oral Session
Joint Sessions


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Tuesday, 7 October 2008: 8:00 AM-12:00 PM
George R. Brown Convention Center, General Assembly Theater Hall C

Paul A. Schroeder and Alan Franzluebbers
8:00 AM
Introductory Remarks
8:05 AM
Estimates of Atmospheric CO2 For the Past 420 Million Years and Its Relationship to Temperature
Dana L. Royer, Wesleyan Univ; Robert A. Berner, Yale Univ; Jeffrey Park, Yale Univ
8:25 AM
Forest Soil Respiration: What Don't We Know?
James Raich, Iowa State University
8:45 AM
9:05 AM
Soil Respiration: Influence of Agricultural Management
Philippe Rochette, Agriculture and Agri-Food Canada
9:25 AM
Carbon Isotope Geochemistry of Co-Existing Paleosol Calcite and Organic Matter: Indicator of Soil CO2 Concentration, Actual Evapotranspiration, and the Driest Landscapes on Earth
Neil Tabor, Southern Methodist University; Isabel Montanez, Univ of California; Christopher J. Poulsen, University of Michigan
9:45 AM
Methodological Considerations of High Frequency Automated Soil Respiration Measurements
Eric Davidson, The Woods Hole Research Center; Kathleen Savage, The Woods Hole Research Center; Andrew D. Richardson, University of New Hampshire
10:20 AM
Comparison of Soil CO2 Fluxes by Eddy-Covariance and Chamber Methods in Fallow Periods of a Corn-Soybean Rotation
Guillermo Hernandez, USDA-ARS, Natl. Soil Tilth Lab.; Timothy Parkin, USDA-ARS, National Soil Tilth Laboratory; Jerry Hatfield, USDA-ARS, Natl. Soil Tilth Lab.; Thomas Sauer, USDA-ARS, Natl. Soil Tilth Lab.; John Prueger, USDA-ARS, Natl. Soil Tilth Lab.
10:35 AM
Exploring the Sensitivity of Paleo-PCO2 Models Based on δ13C of Pedogenic Gibbsite to Changing Soil Variables with Depth Using Numerical Methods
Jason Austin, University of Georgia; Paul Schroeder, University of Georgia; John Dowd, University of Georgia
10:50 AM
Impact of Urbanization on CO2 Fluxes and Sources from Houston-Area Watersheds
Fanwei Zeng, Rice University; Caroline Masiello, Rice University
11:20 AM
Influences of Stand Density on Soil Respiration for Pinus Densiflora
Yowhan Son, Korea University; Nam Jin Noh, Korea University; K.W. Seo, Korea University; S.J. Heo, Korea University; S.K. Lee, Korea University; Dohyoung Kim, Korea University; W.K. Lee, Korea University; C. Kim, Jinju National University; S.W. Bae, Korea Forest Research Institute; J.H. Hwang, Korea Forest Research Institute
11:35 AM
Variation In Soil CO2 Flux In a Tropical Dryland Agroecosystem: Impact of Addition of Various Resource Quality Inputs
Nandita Ghoshal, Banaras Hindu University; Sonu Singh, Banaras Hindu University; K.P. Singh
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