COS 37 - Biogeochemistry: Atmospheric N Deposition Effects

Tuesday, August 4, 2009: 1:30 PM-5:00 PM
La Cienega, Albuquerque Convention Center
Ruth D. Yanai, SUNY College of Environmental Science and Forestry
1:30 PM
 From missing source to missing sink: Long-term nitrogen dynamics in the northern hardwood forest
Ruth D. Yanai, SUNY College of Environmental Science and Forestry; Steven P. Hamburg, Environmental Defense Fund; Mary A. Arthur, University of Kentucky; Matthew A. Vadeboncoeur, University of New Hampshire; Colin B. Fuss, Syracuse University; Thomas G. Siccama, Yale
1:50 PM
 Nitrogen fertilization decreased decomposition in four northeastern forest soils
Marissa Weiss, Cornell University; Christine Goodale, Cornell University
2:10 PM
 Nitrogen fertilization effects on litter decomposition and microbial community characteristics in two humid tropical forests
Daniela F. Cusack, UC - Los Angeles; Whendee Silver, University of California; Mary K. Firestone, University of California, Berkeley; William H. McDowell, University of New Hampshire; Margaret S. Torn, University of California
2:50 PM
 Transport and deposition of pyrogenic nitrogen in Africa: Role in regional biogeochemistry and fertility
Lara Prihodko, South Dakota State University; Niall P. Hanan, South Dakota State University
3:10 PM
3:20 PM
 Effects of direct foliar uptake of gaseous nitrogen dioxide on plant-herbivore interactions
Dena M. Vallano, University of California Santa Cruz; Stuart Campbell, Cornell University
3:40 PM
 Ecosystem response to the urban atmosphere in the Sonoran Desert
Sharon J. Hall, Arizona State University; Ryan A. Sponseller, Umeå University; Nancy B. Grimm, Arizona State University; David P. Huber, Colorado State University; Chris Clark, AAAS; Scott L. Collins, University of New Mexico; Jason P. Kaye, Pennsylvania State University; Jonathan Allen, Harvard University
4:00 PM
 Ammonium nitrate and soil moisture effects on methane flux in a temperate forest
Emma L. Aronson, University of Pennsylvania; Brent Helliker, University of Pennsylvania
4:20 PM
 Minor stimulation of soil carbon storage by nitrogen addition
Yiqi Luo, University of Oklahoma; Meng Lu, Smithsonian Environmental Research Center; Xuhui Zhou, Fudan University; Bo Li, Fudan University; Changming Fang, Fudan University; Jiakuan Chen, Fudan University
4:40 PM
 Can predation negate resource effects on primary producers in extreme ecosystems?
Jim P. Zettel, University of Alberta; Rolf D. Vinebrooke, University of Alberta
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