Biogeochemistry

Session 101 (Poster)
Tuesday, June 6, 2:00 PM-5:30 PM, Explorer Hall

(528) Land use influences nitrogen metabolism of headwater streams.
C.P. Arango, J.L. Tank, J.J. Beaulieu, and L.T. Johnson. Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556

(529) Tracing the fate of lake-derived seston in outlet streams from three ¹⁵N enriched lakes in arctic Alaska.
L. Bare, A.E. Hershey, and M. Keyse. Deptartment of Biology, University of North Carolina at Greensboro, Greensboro, North Carolina, USA 27403

(530) Implications of global warming on photosynthesis and respiration in an Arctic tundra river: consequences to the C cycle.
C.K. Cappelletti and W.B. Bowden. Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT 05405

(531) Benthic denitrification potential in Black Earth Creek, Wisconsin: The influence of macrophytes on carbon limitation in sediments of a restored agricultural coldwater stream.
K.J. Forshay and S.I. Dodson. Department of Zoology, University of Wisconsin - Madison, Madison, WI 53706

(532) Correlations between chemical and biological parameters of southern Michigan streams.
S.W. Hunt and R.J. Stevenson. Michigan State University

(533) Photodegradation of dissolved organic matter from streams in northern Michigan.
J.H. Larson, P.C. Frost, D.M. Lodge, and G.A. Lamberti. Department of Biology, University of Notre Dame, Notre Dame, IN, USA

(534) Linking hydrologic and thermodynamic models of floodplain biogeochemistry.
J.L. Morse¹, E.S. Bernhardt¹, and G.C. Poole^2,3. ¹Department of Biology, Duke University, Durham, North Carolina, USA, ²Eco-metrics, Inc., Tucker, Georgia, USA, ³Institute of Ecology, University of Georgia, Athens, Georgia, USA

(535) DOC quality in boreal forest streams along a latitudinal gradient through interior Alaska.
J.A. O'Donnell¹, E.S. Kane², J.B. Jones¹, G.R. Aiken³, and J.W. Harden⁴. ¹Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, Alaska, USA 99775, ²Forest Science Department, University of Alaska Fairbanks, Fairbanks, Alaska, USA 99775, ³United States Geological Survey, Boulder, Colorado, USA 80303 , ⁴United States Geological Survey, Menlo Park, California, USA 94025

(536) Factors controlling denitrification and NO₃ uptake in six tropical Puerto Rican streams using a ¹⁵N tracer approach.
J.D. Potter¹, W.H. McDowell¹, J.L. Merriam¹, S.M. Thomas², and B.J. Peterson². ¹Department of Natural Resources, University of New Hampshire, Durham, NH 03824, ²Ecosystems Center, Marine Biological Laboratory, Woods Hole, MA 02453

(537) Spatial variation in stream ecosystem responses to nitrogen and phosphorus addition in the South Fork Eel River watershed.
J.D. Schade¹, C. McNeely², S.A. Thomas³, B.S. Sousa⁴, J.R. Welter⁵, J.C. Finlay², and M.E. Power⁴. ¹Department of Biology, St. Olaf College, Norhtfield, MN, ²EEB, University of Minnesota, St. Paul, MN, ³School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, ⁴Integrative Biology, University of California, Berkeley, CA , ⁵Department of Biology, College of St. Catherine, St. Paul, MN

(538) Nitrate and phosphorus uptake in streams in the Lake Biwa watershed, Japan.
R.W. Sheibley¹, T. Nagata¹, Y. Kobayashi¹, and N. Ohte². ¹Center for Ecological Research, Kyoto University, Otsu, Shiga, Japan 520-2113, ²Division of Environmental Science and Technology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan 606-8502

(539) Carbon and nitrogen stoichiometry of detritivorous fish: gut contents, tissues, and excretions.
J. Shostell. Department of Biology, Penn State University-Fayette Campus, Uniontown, PA, USA 15401-0519

(540) Anthropogenic contaminants in the drinking water supply for Fort Wayne, Indiana, USA.
D.R. Smith¹, E.A. Warnemuende¹, R. Gillespie², and C. Huang¹. ¹USDA-ARS, National Soil Erosion Research Laboratory, West Lafayette, IN 47907, ²Department of Biology, Indiana University-Purdue University Ft Wayne, Ft. Wayne, IN 46805

(541) Nitrate in watersheds: straight from soils to streams? .
E.B. Sudduth¹, S.S. Perakis^2,3, and E.S. Bernhardt⁴. ¹University Program in Ecology, Duke University, Durham, NC 27708, ²USGS Forest and Rangeland Ecosystem Science Center, Corvallis, OR 97331, ³Department of Forest Science, Oregon State University, Corvallis, OR 97331, ⁴Department of Biology, Duke University, Durham, NC 27708

(542) Macroinvertebrate community structure, chemistry and hydrology of a temperate seep-fed first-order urban woodland stream.
K.S. Veum¹, F.L. Lloyd², and E. Kosnicki². ¹School of Natural Resources, University of Missouri, Columbia, ²Division of Plant Sciences, University of Missouri, Columbia