8:00 AM: Hedin, Lars¹, ¹ Princeton University, Princeton, NJ, USA, Climate-dependence of forest nitrogen losses, worldwide.

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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.

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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.

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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.

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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.

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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.

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10:10 AM: Wan, Shiqiang^{1, 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.

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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.

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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?

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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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