COS 51 - Biogeochemistry: Experimental Climate Change Effects On Biogeo Processes

Tuesday, August 7, 2012: 1:30 PM-5:00 PM
B113, Oregon Convention Center
1:30 PM
 Recovery of plant communities and soil organic matter pools in sagebrush steppe ecosystem of south central Wyoming
Otgonsuren Avirmed, University of Wyoming; Indy Burke, University of Wyoming; William K. Lauenroth, University of Wyoming; Megan Lobley, University of Wyoming; David M. Bell, USDA Forest Service, Pacific Northwest Research Station; Daniel R. Schlaepfer, University of Basel
1:50 PM
 The interactive effects of soil freezing and nitrogen deposition on winter and growing season nitrogen retention
Mat R. Vankoughnett, Western University; Hugh A. L. Henry, University of Western Ontario
2:10 PM
 The impact of changes in the timing of precipitation on soil respiration and soil-N in Mediterranean evergreen oak woodlands
Stephan Unger, Instituto Superior de Agronomia, Universidade Técnica de Lisboa; Xavier Lecomte, Technical University of Lisbon, Instituto Superior de Agronomia; João S. Pereira, Instituto Superior de Agronomia, Universidade de Lisboa; David Fangueiro, Technical University of Lisbon, Instituto Superior de Agronomia; Marjan Jongen, Instituto Superior de Agronomia, Universidade Técnica de Lisboa
2:30 PM
 Effects of experimental warming on soil respiration in the semi-arid steppe to taiga forest transition zone in northern Mongolia
Anarmaa Sharkhuu, University of Pennsylvania; Alain F. Plante, University of Pennsylvania; Enkh-Mandal Orosoo, National University of Mongolia; Brenda Casper, University of Pennsylvania; Brent Helliker, University of Pennsylvania; Pierre Liancourt, Institute of Botany; Bazartseren Boldgiv, National University of Mongolia; Peter Petraitis, University of Pennsylvania
2:50 PM
 Interactive effects of clipping practice and experimental warming on soil microbial communities involved in nitrogen cycling in a tallgrass prairie
Kai Xue, University of Oklahoma; Jianping Xie, University of Oklahoma; Ye Deng, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences; Liyou Wu, University of Oklahoma; Zhili He, University of Oklahoma; Joy D. Van Nostrand, University of Oklahoma; Yiqi Luo, University of Oklahoma; Jizhong Zhou, University of Oklahoma
3:10 PM
3:20 PM
 Contrasting foliar responses to experimental drought and rainfall addition in co-occurring piñon and juniper trees
Jean-Marc Limousin, University of New Mexico; Christopher P. Bickford, University of New Mexico; Jessica L. Osuna, University of New Mexico; Robert E. Pangle, University of New Mexico; Enrico A. Yepez, University of New Mexico; Amanda L. Boutz, University of New Mexico; Nathan Gehres, University of New Mexico; Nathan G. McDowell, Los Alamos National Laboratory; William T. Pockman, University of New Mexico
3:40 PM
 Soil nitrogen dynamics during snow melt in moist acidic tussock tundra soils
Anthony Darrouzet-Nardi, U.S. Geological Survey; Seeta A. Sistla, University of California, Santa Barbara; Heidi Steltzer, Fort Lewis College; Patrick F. Sullivan, University of Alaska Anchorage; Matthew D. Wallenstein, Colorado State University; Michael N. Weintraub, University of Toledo
4:00 PM
 Response of mature Norway spruce (Picea abies) to elevated atmospheric CO2
Manuel Mildner, University of Basel; Sebastian Leuzinger, Auckland University of Technology; Martin K. F. Bader, University of Western Australia; Christian Koerner, University of Basel
4:20 PM
 Will warming enhance soil organic matter decomposition? Evidence from an in situ warming experiment and process-based soil laboratory incubations
William C. Eddy III, University of Minnesota; Sarah E. Hobbie, University of Minnesota; Peter B. Reich, University of Minnesota; Roy Rich, University of Minnesota; Artur Stefanski, University of Minnesota
4:40 PM
 Response of tropical forest nitrogen isotope ratios to 13 years of nitrogen and phosphorus fertilization
Jordan R. Mayor, Swedish University of Agricultural Sciences; Benjamin L. Turner, Smithsonian Tropical Research Institute; Helene C. Muller-Landau, Smithsonian Tropical Research Institute; Edward A. G. Schuur, University of Florida; Joseph S. Wright, Smithsonian Tropical Research Institute