Contributed Oral Session 110: Biogeochemistry: Nitrogen Dynamics
Thursday, August 11, 8:00 AM - 11:30 AM, Meeting Room 513 C, Level 5, Palais des congrès de Montréal
8:00 AM: Hedin, Lars1, 1 Princeton University, Princeton, NJ, USA, Climate-dependence of forest nitrogen losses, worldwide.
8:20 AM: Gilliam, Frank*,1, Willson, David1, May, Jeffrey1, Adams, Mary2, 1 Department of Biological Sciences, Huntington, WV, USA2 Timber and Watershed Laboratory, Parsons, WV, USA, Non-monotonic response of net nitrification in soils experiencing chronically-elevated nitrogen inputs.
8:40 AM: Benner, Jon*,1, Lunch, Claire1, Conroy, Shannon 1, Vitousek, Peter1, 1 Stanford University, Stanford, CA, Controls on the occurrence and activity of a nitrogen-fixing epiphytic lichen in tropical forests of varying nutrient status.
9:00 AM: Wood, Tana*,1, Lawrence, Deborah1, Clark, Deborah2, 1 Department of Environmental Sciences, Charlottesville, VA, 229022 Department of Biology, St. Louis, MO, 63121, Large-scale manipulations of forest floor litter result in an increase in litter P inputs of a wet tropical forest in Costa Rica.
9:20 AM: Vourlitis, George*,1, Zorba, Gypsi1, Pasquini, Sarah1, Mustard, Robert1, Davis, Kim1, 1 Bioological Sciences Department, San Marcos, CA, USA, N storage and cycling in chaparral and coastal sage scrub ecosystems in response to experimental N deposition: Preliminary results.
9:40 AM: , BREAK.
9:50 AM: Perakis, Steven *,1, 2, Kellogg, Chev3, Vitousek, Peter4, 1 USGS Forest and Rangeland Ecosystem Science Center, Corvallis, OR, USA2 Oregon State University, Corvallis, OR, USA3 University of Minnesota, St. Paul, MN, USA4 Stanford University, Stanford, CA, USA, Precipitation and nitrogen loss from nitrogen-limited grassland.
10:10 AM: Wan, Shiqiang1, 2, Norby, Richard2, Weltzin, Jake 3, Allen, Philp3, 1 Institute of Botany, the Chinese Academy of Sciences, Beijing, China2 Environmental Sciences Divsion, Oak Ridge National Laboratory, Oak Ridge, TN, USA3 Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN, USA, No responses of belowground C and N pools and dynamics to elevated [CO2], rising temperature and changing soil moisture in old-field grassland.
10:30 AM: Henry, Hugh*,1, Chiariello, Nona2, Vitousek, Peter1, Field, Christopher3, 1 Stanford University, Stanford, CA2 Jasper Ridge Biological Preserve, Stanford, CA3 Carnegie Institution, Stanford, CA, Fire reverses the interactive effects of elevated CO2 and N deposition on grassland productivity.
10:50 AM: Vallano, Dena *,1, Sparks, Jed1, 1 Department of Ecology and Evolutionary Biology, Ithaca, NY, Foliar incorporation of gas-phase reactive nitrogen: Beneficial nutrient or phytotoxin?
11:10 AM: McGroddy, Megan*,1, Hedin, Lars1, Moran, Emilio2, Batistella, Mateus3, 1 Princeton University, Princeton, NJ, USA2 Indiana University, Bloomington, IN, USA3 EMBRAPA, Campinas, SP, Brazil, Leaching of essential nutrient cations and anions from undisturbed lowland forests across the Brazilian Amazon Basin.
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