Wednesday, June 6, 2007: 10:15 AM-12:00 PM
Richland Room C (Columbia Metropolitan Convention Center)
Biogeochemistry III
Organizer:Matt R. Whiles
10:15 AM232Predicting Patterns of and Limits to Denitrification Following Conversion of Former Agricultural Lands to Forested Wetlands
Jennifer L. Morse, Marcelo Ardon, Emily S. Bernhardt, Martin W. Doyle, Geoffrey C. Poole
10:30 AM233Nitrate Uptake and Denitrification Rates in Streams Determined During the LINX II 15N Addition Experiments
Patrick J. Mulholland, Linda R. Ashkenas, Lee W. Cooper, Clifford N. Dahm, Walter K. Dodds, Stuart Findlay, Stan V. Gregory, Nancy B. Grimm, Robert O. Hall, Stephen K. Hamilton, Sherri L. Johnson, William H. McDowell, Judith L. Meyer, Bruce J. Peterson, Geoffrey C. Poole, Jennifer L. Tank, H. Maurice Valett, Jackson R. Webster, Clay Arango, Melody J. Bernot, Jake J. Beaulieu, Amy J. Burgin, Chelsea Crenshaw, Ashley M. Helton, Laura Johnson, Jeff Merriam, Bobbie R. Niederlehner, Jonathan M. O'Brien, Jody Potter, Richard W. Sheibley, Daniel J. Sobota, Suzanne M. Thomas
10:45 AM234Implications of the LINX-II 15N Addition Experiments for Patterns of Biotic Nitrate Uptake across Stream Networks
Ashley M. Helton, Geoffrey C. Poole, Judith L. Meyer, Patrick J. Mulholland, Linda R. Ashkenas, Lee W. Cooper, Clifford N. Dahm, Walter K. Dodds, Stuart Findlay, Stan V. Gregory, Nancy B. Grimm, Robert O. Hall, Stephen K. Hamilton, Sherri L. Johnson, William H. McDowell, Bruce J. Peterson, Jennifer L. Tank, H. Maurice Valett, Jackson R. Webster, Clay Arango, Melody J. Bernot, Jake J. Beaulieu, Chelsea Crenshaw, Jeff Merriam, Bobbie Niederlehner, Jonathan M. O’Brien, Jody Potter, Richard W. Sheibley, Daniel J. Sobota, Suzanne M. Thomas, Lydia H. Zeglin
11:00 AM235Does Watershed Configuration Indirectly Regulate Nitrification Via Controls on DOC Quantity and Quality?
Keli J. Goodman, Michelle A. Baker
11:15 AM236Land Use Influences the Spatio-Temporal Controls on Nitrification and Denitrification in Headwater Streams
Clay Arango, Jennifer L. Tank
11:30 AM237Seasonal variation in nitrogen fixation rates in Venezuelan rivers
Amber J. Ulseth, Alex S. Flecker, Robert O. Hall Jr., Brad W. Taylor
11:45 AM238Quantifying the Roles of Neotropical Tadpoles in Headwater Stream Nitrogen Cycling: the Influence of Starvation and Stress on Excretion Estimates
Matt R. Whiles, Alex D. Huryn, Robert O. Hall, Karen R. Lips, Catherine M. Pringle, Susan S. Kilham, Walter K. Dodds, Chad E. Montgomery
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