Thursday, June 7, 2007: 10:15 AM-12:00 PM
Lexington Room A (Columbia Metropolitan Convention Center)
Biogeochemistry V
Organizer:Jeremy B. Jones
10:15 AMAmmonium uptake and transformation in two arctic streams with contrasting disturbance regimes using simultaneous N tracer additions
Thomas Heatherly II, Diane Sanzone, Heidi Wilcox, Jon Benstead, Alex Huryn, Stephanie Parker, Bruce J. Peterson
10:30 AMLinking exotic snails and inorganic carbon cycling in Kelly Warm Springs, Grand Teton National Park
Erin R. Hotchkiss, Robert O. Hall
10:45 AMImpacts of the Non-Native Cattail Typha x glauca on Wetland Structure and Biogeochemical Cycling of Nitrogen
Nancy C. Tuchman, PhD, Kathi Jo Jankowski, MS, Pamela Geddes, PhD, Lane Barham, Daniel Larkin, PhD
11:00 AMThe effect of carbon quality on potential denitrification in a suburbanizing stream in southeastern New Hampshire
Gretchen M. Gettel, William H. McDowell
11:15 AMCarbon and sulfide as controls on dissimilatory nitrate reduction to ammonium (DNRA) in freshwater sediments
Amy J. Burgin, Stephen K. Hamilton
11:30 AMHydrogen isotopes outperform carbon in discriminating between aquatic and terrestrial energy sources
Jane C. Marks, PhD, Eugčnia Martí, Daniel Von Schiller, Miquel Ribot, Paula Fonolla, Richard Doucett
11:45 AMThe Export of Dissolved Inorganic Carbon from Watersheds Underlain with Discontinuous Permafrost in the Boreal Forest of Interior Alaska: the Contributions of Soil Carbon and Carbonate Weathering
Jeremy B. Jones
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