Biogeochemistry 3

Session 55 (Contributed)
Thursday, June 8, 8:00 AM-9:45 AM, Egan 5
Moderator: J.B. Jones

8:00 (361) A question of scale: quantifying nitrogen demand in a large river.
J.L. Tank¹, E.J. Rosi-Marshall², R.O. Hall³, and M.A. Baker⁴. ¹Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, ²Departments of Biology and Natural Science, Loyola University, Chicago, IL 60626 , ³Department of Zoology and Physiology University of Wyoming, Laramie, WY 82071 , ⁴Department of Biology, Utah State University, Logan, UT 84321

8:15 (362) Influence of land use and seasonality on denitrification rates in three Mediterranean streams .
D. Von Schiller¹, E. Marti¹, J.L. Riera², A. Argerich², M. Ribot¹, and F. Sabater². ¹Centre d'Estudis Avançats de Blanes (CSIC); Accés a la Cala St. Francesc, 14; 17300 Blanes; Spain, ²Departament d'Ecologia; Universitat de Barcelona; Diagonal 645; 08028 Barcelona; Spain

8:30 (363) High nitrogen fixation in Wyoming streams.
L.A. Neerhof and R.O. Hall. Department of Zoology and Physiology, University of Wyoming, Laramie, Wyoming 82071

8:45 (364) Evaluation of denitrification in an urban stream receiving effluent from a wastewater treatment plant.
D.D. Lofton¹, A.E. Hershey¹, and S. Whalen². ¹University of North Carolina - Greensboro, ²University of North Carolina - Chapel Hill

9:00 (365) The importance of dissimilatory nitrate reduction to ammonium (DNRA) in freshwater sediments: Evidence from ¹⁵N tracer studies.
A.J. Burgin and S.K. Hamilton. Michigan State University and W.K. Kellogg Biological Station, Hickory Corners, MI 49060

9:15 (366) Novel microbial processes for nitrogen removal from freshwaters: A review of the evidence.
S.K. Hamilton and A.J. Burgin. Kellogg Biological Station, Michigan State University, Hickory Corners, MI USA 49060

9:30 (367) The production of nitrous oxide in headwater streams draining mixed land use basins.
J.J. Beaulieu¹, J.L. Tank¹, and S.K. Hamilton². ¹Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, ²Department of Zoology, Michigan State University, Hickory Corners, MI 49060