8:00 AM: McSwiney, Claire^*,1, Robertson, G¹, ¹ W.K. Kellogg Biological Station, Hickory Corners, MI, USA, Soil oxygen, water content, and N availability across a topographic gradient in a Midwestern agroecosystem.

FULL ABSTRACT

8:20 AM: Liptzin, Daniel¹, Seastedt, Timothy¹, ¹ University of Colorado, Boulder, CO, USA, Heterogeneity in soil nutrients in the forest-alpine tundra ecotone.

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8:40 AM: McNamara, Niall ¹, Helaina, Helaina¹, Piearce, Trevor², Stott, Andrew¹, Chamberlain, Paul¹, Ineson, Phil³, ¹ Centre for Ecology and Hydrology, Lancaster, Lancashire, United Kingdom² Department of Biological Sciences, Lancaster, Lancashire, United Kingdom³ Department of Biology, York, Yorkshire, United Kingdom, Impacts of afforestation on soil methane fluxes.

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9:00 AM: Gulledge, Jay¹, Ji, Baoming², Engelhaupt, Erika¹, ¹ University of Louisville, Louisville, Kentucky, USA² Tulane University, New Orleans, Louisiana, USA, Projected effects of coastal subsidence and sea-level rise on soil methane efflux from a subtropical bottomland forest.

FULL ABSTRACT

9:20 AM: Harrison, Michael^*,1, Comer, Travis ¹, Whiting, Gary¹, ¹ Christopher Newport University, Newport News, VA, USA, Spatial variation of NEP and methane production across a permafrost melt feature in the zone of discontinuous permafrost in northern Alberta, Canada.

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9:40 AM: , BREAK.

9:50 AM: Selmants, Paul^{*,1, 2}, Hart, Stephen^{1, 2}, ¹ School of Forestry, Flagstaff, Arizona, USA² Merriam-Powell Center for Environmental Research, Flagstaff, Arizona, USA, Carbon, nitrogen, and phosphorus dynamics along a 3 million year volcanic soil age gradient in northern Arizona.

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10:10 AM: Day, Frank^*,1, Stover, Daniel¹, Pagel, Alisha¹, Hungate, B³, Drake, Bert², ¹ Old Dominion University, Norfolk, VA³ Northern Arizona University, Flagstaff, AZ² Smithsonian Environmental Research Center, Edgewater, MD, Seven years of fine root regrowth under elevated atmospheric CO₂ following fire in a scrub oak ecosystem in central Florida, USA.

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10:30 AM: Stover, Daniel^*,1, Day, Frank¹, Butnor, John², Drake, Bert³, ¹ Old Dominion University, Norfolk, VA² U.S. Forest Service, South Burlington, VT³ Smithsonian Environmental Research Center, Edgewater, MD, Utilization of ground penetrating radar to quantify the effects of elevated atmospheric CO₂ on coarse roots in a scrub oak ecosystem at Kennedy Space Center, Florida USA.

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10:50 AM: Weintraub, Michael^*,1, Monson, Russell¹, Schmidt, Steven¹, ¹ University of Colorado, Boulder, Boulder, CO, 80302-0334, Root carbon inputs and soil enzyme activity in the sub-alpine forest of the front range of the Rockies, Colorado.

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11:10 AM: Hall, Sharon^*,1, Asner, Gregory², ¹ Colorado College, Colorado Springs, CO² Department of Global Ecology, Stanford, CA, Scaling biogenic trace gas emissions from plots to regions: Effects of Morella faya (Fire tree) stand size on soil N₂O and NO_x fluxes in Hawaii Volcanoes National Park.

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