2009 Portland GSA Annual Meeting (18-21 October 2009)
Session No. 69 Sunday, 18 October 2009
1:30 PM-5:30 PM, Oregon Convention Center: C124

T123. Diurnal Biogeochemical Processes in Rivers, Lakes, and Shallow Groundwater (Geochemical Society; GSA Hydrogeology Division; GSA Geobiology & Geomicrobiology Division)

Christopher Gammons and David Nimick, Presiding
 Paper #Start Time
69-11:30 PM THE INTERDEPENDENCE OF DIEL TEMPERATURE CYCLES IN SURFACE AND HYPORHEIC WATER ON THE UMATILLA RIVER FLOODPLAIN, OREGON: POOLE, Geoffrey C.1, O'DANIEL, Scott J.2, JONES, Krista L.3, WOESSNER, William4, ARRIGONI, Alicia4, and HELTON, Ashley M.5, (1) Dept. of Land Resources and Environmental Sciences, Montana State University, PO Box 173120, Bozeman, MT 59717-3120, gpoole@montana.edu, (2) Confederated Tribes of the Umatilla Indian Reservation, PO Box 638, Pendleton, OR 97801, (3) Lower Columbia River Estuary Partnership, 811 SW Naito Parkway, Suite 410, Portland, OR 97232, (4) Geosciences, Univ of Montana, 32 Campus Drive #1296, Missoula, MT 59812, (5) Odum School of Ecology, University of Georgia, Athens, GA 30602
69-21:50 PM A BIOLOGICAL CAUSE FOR LARGE SUMMER DIEL STREAMFLOW CYCLES, UPPER BIG HOLE RIVER, SOUTHWESTERN MONTANA: NIMICK, David A.1, GAMMONS, Christopher2, BERKAS, Wayne R.1, and CLEASBY, Thomas E.1, (1) U.S. Geological Survey, 3162 Bozeman Avenue, Helena, MT 59601, dnimick@usgs.gov, (2) Geological Engineering, Montana Tech of The University of Montana, 1300 West Park Street, Butte, MT 59701
69-32:05 PM DIEL CONCENTRATIONS AND HYSTERESIS BEHAVIORS OF MAJOR, MINOR, AND TRACE SOLUTES IN TAYLOR VALLEY, ANTARCTIC STREAMS: FORTNER, Sarah K., Byrd Polar Research Center, The Ohio State University, 1090 Carmack Road, Columbus, OH 43214, fortner.27@osu.edu, LYONS, W. Berry, School of Earth Sciences, Byrd Polar Research Center, The Ohio State University, 108K Scott Hall, 1090 Carmack Rd, Columbus, OH 43210, and MUNK, LeeAnn, Department of Geological Sciences, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, AK 99508
69-42:20 PM DIURNAL PATTERNS IN STREAM STAGE, GROUNDWATER SEEPAGE RATE, AND NITRATE CONCENTRATIONS IN A SMALL AGRICULTURAL WATERSHED: ROBERTSON, Wendy M.1, HERMAN, Janet S.1, HORNBERGER, George M.2, and MILLS, Aaron L.1, (1) Dept. of Environmental Sciences, University of Virginia, Charlottesville, VA 22904, jherman@virginia.edu, (2) Dept. of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN 37240
69-52:35 PM DIEL CYCLES OF NUTRIENTS AND TRACE METALS IN A HYPEREUTROPHIC STREAM, SILVER BOW CREEK, MONTANA: BABCOCK, John N. and GAMMONS, Christopher, Geological Engineering, Montana Tech of The University of Montana, 1300 West Park St, Butte, MT 59701, jnbabcock@mtech.edu
69-62:50 PM DIEL CYCLES IN STABLE-ISOTOPE COMPOSITION OF NITRATE, AMMONIA, DISSOLVED OXYGEN, AND DISSOLVED INORGANIC CARBON IN A HYPEREUTROPHIC STREAM: GAMMONS, Christopher1, BABCOCK, John N.1, PARKER, Stephen R.2, and POULSON, Simon3, (1) Geological Engineering, Montana Tech of The University of Montana, 1300 West Park St, Butte, MT 59701, cgammons@mtech.edu, (2) Chemistry and Geochemistry, Montana Tech of The University of Montana, 1300 West Park St, Butte, MT 59701, (3) Geological Sciences and Engineering, University of Nevada-Reno, MS 172, Reno, NV 89557-0138
69-73:05 PM INFLUENCE OF PHOTOSYNTHESIS ON CARBONATE EQUILIBRIUM IN A KARST RIVER: DE MONTETY, Veronique1, MARTIN, Jonathan B.1, COHEN, Matthew J.2, and FOSTER, Chad R.2, (1) Department of Geological Sciences, University of Florida, 241 Williamson Hall, PO Box 112120, Gainesville, FL 32611, vdemontety@ufl.edu, (2) School of Forest Resources and Conservation, University of Florida, 328 Newins-Ziegler Hall, PO Box 110410, Gainesville, FL 32611-0410
 3:20 PM Break
69-83:35 PM PHOTOCHEMISTRY OF DISSOLVED ORGANIC MATERIAL AND EFFECTS ON STREAM ECOSYSTEMS: MCKNIGHT, Diane M., Instaar, Univ of Colorado, 1560 30th St, Boulder, CO 80309, diane.mcknight@colorado.edu
69-93:55 PM PHOTOCHEMICAL REDUCTION OF ORGANICALLY-BOUND FeIII IN A HIGH-ALTITUDE STREAM THAT RESULTS IN UNEXPECTED INCREASES IN [FeIII(AQ)]: BORMAN, Christopher J., Chemical Sciences Division, Oak Ridge National Lab, C-254 4500-S, MS-6119, Oak Ridge, TN 37831, bormancj@ornl.gov, SULLIVAN, B. Patrick, Department of Chemistry, University of Wyoming, Laramie, WY 82071, EGGLESTON, Carrick M., Department of Geology and Geophysics, University of Wyoming, Laramie, WY 82071, and COLBERG, Patricia J.S., Department of Civil and Architectural Engineering, University of Wyoming, Laramie, WY 82071
69-104:10 PM IN SITU MONITORING OF THE DIURNAL CYCLING OF DYNAMIC METAL SPECIES IN A STREAM UNDER CONTRASTING PHOTOBENTHIC BIOFILM ACTIVITY AND HYDROLOGICAL CONDITIONS: TERCIER-WAEBER, Mary-Lou1, HEZARD, Teddy1, and MASSON, Matthieu2, (1) CABE - Dept. of Inorganic, Analytical and Applied Chemistry, University of Geneva, Sciences II, 30 Quai E.-Ansermet, Geneva 4, 1211, Switzerland, marie-louise.tercier@unige.ch, (2) Institut F.-A. Forel, University of Geneva, 10 Route de Suisse, Versoix, 1290, Switzerland
69-114:25 PM DIURNAL AND SEASONAL REDOX CHANGES IN LAKE SEDIMENTS: IMPLICATIONS FOR NUTRIENT FLUX AND CYANOBACTERIAL BLOOMS: DRUSCHEL, Gregory K., Department of Geology, University of Vermont, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405, gregory.druschel@uvm.edu, SMITH, Lydia, Department of Geology, Univ of Vermont, Burlington, VT 05405, and WATZIN, Mary, Rubenstein School of Environment and Natural Resources, University of Vermont, 324 Aiken Center, Burlington, VT 05405
69-124:45 PM BACTERIAL RESPONSES TO GEOCHEMICAL AND DIURNAL PROCESSES OCCURING IN LAKE MAUMELLE, ARKANSAS: STITES, Courtney E.1, ROBINSON, Amelia C.2, PAYNE, Forrest E.3, SWEENEY, Sharon3, GREEN, W. Reed4, and JOHNSON, Dawn M.5, (1) Department of Earth Science, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204, cxgipson@ualr.edu, (2) Earth Sciences, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204, (3) Department of Biology, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204, (4) U.S. Geological Survey, 401 Hardin Road, Little Rock, AR 72211, (5) Earth Science, University of Arkansas at Little Rock, 2801 South University, Little Rock, AR 72204
69-135:00 PM DIURNAL TRENDS IN METHYL MERCURY CONCENTRATION IN A WETLAND ADJACENT TO GREAT SALT LAKE, UTAH, USA: NAFTZ, David L., USGS, Wyoming-Montana Water Science Center, 3162 Bozeman Ave, Helena, MT 59601, dlnaftz@usgs.gov, KRABBENHOFT, David P., U.S. Geological Survey, Wisconsin Water Science Center, Middleton, WI 53562, CEDERBERG, Jay R., USGS, 2329 West Orton Circle, Salt Lake City, UT 84119, BEISNER, Kimberly R., USGS, 520 N. Park Avenue, Tucson, AZ 85719, and CARLING, Gregory T., Department of Geological Sciences, Brigham Young University, S-389 ESC, Provo, UT 84602
69-145:15 PM DIURNAL TRENDS IN METHYLMERCURY CONCENTRATION AND ORGANIC MATTER PHOTO-REACTIVITY IN AGRICULTURAL WETLANDS OF THE YOLO BYPASS, CALIFORNIA: FLECK, Jacob A.1, ALPERS, Charles N.1, BERGAMASCHI, Brian A.1, DOWNING, Brian D.1, GILL, Gary A.2, SARACENO, John Franco1, and STEPHENSON, Mark3, (1) U.S. Geological Survey, California Water Science Center, 6000 J St, Placer Hall, Sacramento, CA 95819, cnalpers@usgs.gov, (2) Marine Sciences Laboratory, Pacific Northwest National Laboratory, 1529 W. Sequim Bay Rd, Sequim, WA 98382, (3) Dept. of Fish and Game, Moss Landing Marine Labs, Moss Landing, CA 95039

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