Biogeochemistry II

Session 29 (Contributed)
Friday, May 30, 10:15 AM-12:00 PM, Athena GH
Moderator: Strauss

10:15 (196) Re-mobilization and processing of nutrients in desert riparian soils after artificial re-wetting.
J.B. Heffernan, S.G. Fisher, and R.A. Sponseller. Department of Biology, Arizona State University, Tempe, AZ 85281

10:30 (197) Influence of atmospheric deposition on riparian and stream nitrogen pools and fluxes in headwater catchments .
E.N.J. Brookshire¹, H.M. Valett¹, S.A. Thomas², and J.R. Webster¹. ¹Virginia Tech, ²Eco Metrics

10:45 (198) Relationship between ecosystem metabolism and nitrogen biogeochemical gradients in a stream-lake-stream network.
M.M. Bozeman¹, M.A. Baker¹, and R.O. Hall, Jr.². ¹Department of Biology, Utah State University, Logan, Utah, 84322, ²Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming, 82071

11:00 (199) Nitrate spiraling in headwater streams: the importance of temporal variation.
H.M. Valett¹, S.A. Thomas², J.R. Webster¹, P.J. Mulholland³, C.N. Dahm⁴, and C.G. Peterson⁵. ¹Department of Biology, Virginia Tech, Blacksburg, VA, USA, 24061, ²Eco-Metrics, Inc., Pendelton, OR, USA, 97801, ³Environmental Sciences Division, ORNL, Oak Ridge, TN, USA, 37831, ⁴Department of Biology, University of New Mexico, Albuquerque, NM, USA, 87131, ⁵Department of Natural Sciences, Loyola University of Chicago, Chicago, IL, USA, 60626

11:15 (200) Nitrogen fluxes from permafrost-influenced boreal forest watersheds of interior Alaska.
J.B. Jones¹, J.C. Finlay², K.C. Petrone³, and J.A. O'Donnell¹. ¹Institute of Arctic Biology, University of Alaska, Fairbanks, Alaska 99775, ²Department of Ecology, Evolution and Behavior, University of Minnesota, 1987 Upper Buford Circle, St. Paul, Minnesota 55108, ³Water and Environmental Research Center, University of Alaska, Fairbanks, Alaska 99775

11:30 (201) Nitrogen uptake and retention in nutrient enriched streams.
S.R. Earl, H.M. Valett, and J.R. Webster. Department of Biology, Virginia Tech, Blacksburg, VA, USA 24061

11:45 (202) Nitrogen cycle responses to water level manipulations in the Upper Mississippi River.
E.A. Strauss, J.C. Cavanaugh, W.B. Richardson, L.A. Bartsch, and D.M. Soballe. US Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd., La Crosse, Wisconsin 54603