2007 GSA Denver Annual Meeting (28–31 October 2007)
Session No. 157 Tuesday, 30 October 2007
1:30 PM-5:30 PM, Colorado Convention Center: 407

T11. Combined Ecological and Geologic Perspectives in Modern Terrestrial Ecosystems (GSA Geobiology & Geomicrobiology Division; Paleontological Society)

JoAnn Holloway and Mark Waldrop, Presiding
 Paper #Start Time
 1:30 PM Introductory Remarks
157-11:35 PM NUTRIENTS IN GRASSLAND SOILS OF THE CENTRAL COLORADO PLATEAU—SPATIAL CONTROLS BY SUBSTRATE COMPOSITION, GEOMORPHIC SETTING, AND LAND-USE EFFECTS: REYNOLDS, Richard1, NEFF, Jason2, URBAN, Frank3, GOLDSTEIN, Harland4, FERNANDEZ, Daniel2, REHEIS, Marith5, and BELNAP, Jayne6, (1) U.S. Geological Survey, Federal Center, Denver, CO 80225, rreynolds@usgs.gov, (2) Dept of Geological Sciences, University of Colorado, Boulder, CO 80309, (3) U.S. Geological Survey, Box 25046 Federal Center, Denver, CO 80225, (4) US Geol Survey, PO Box 25046, Denver, CO 80225-0046, (5) U.S. Geol Survey, Box 25046, MS 980, Denver Federal Center, Denver, CO 80225, (6) United States Geological Survey, 2290 S. Resource Blvd, Moab, UT 84532
157-21:55 PM SAND DEPOSITION AND VEGETATION PATTERNS ON A PARABOLIC DUNE ON THE SOUTHEASTERN SHORE OF LAKE MICHIGAN: DEVRIES-ZIMMERMAN, Suzanne J.1, HANSEN, Edward C.1, ZIETLOW, Ryan1, and WINNETT-MURRAY, Kathy2, (1) Hope College, Geological and Environmental Sciences, Holland, MI 49423, pooky2@iserv.net, (2) Hope College, Biological Sciences, Holland, MI 49423
157-32:10 PM POST-FIRE WIND EROSION IN SEMIARID SHRUB STEPPE: OBSERVATIONS FROM FIELD AND REMOTELY SENSED DATA: SANKEY, Joel, Geosciences, Idaho State University, 921 S. 8th Ave Stop 8072, Pocatello, ID 83209, sankjoel@isu.edu, GLENN, Nancy, Geosciences, Idaho State Univ, 12301 W. Explorer Drive, Suite 102, Boise, ID 83713, and GERMINO, Matt, Biological Sciences, Idaho State University, 921 S. 8th Ave Stop 8007, Pocatello, ID 83209
157-42:25 PM THE REACTION PROGRESS VARIABLE IN ISOTOPE ECOLOGY: CERLING, Thure, Geology and Geophysics, University of Utah, 135 South 1460 East, Salt Lake City, UT 84103, tcerling@earth.utah.edu, EHLERINGER, James, Department of Biology, University of Utah, 247 South 1400 East, Salt Lake City, UT 84112, and PODLESAK, David, Department of Biology, University of Utah, Salt Lake City, UT 84112
157-52:45 PM THE IMPACT OF COAL-BED METHANE SEEPAGE ON A SOIL MICROBIAL COMMUNITY: MILLS, Christopher T.1, SLATER, Gregory F.2, DIAS, Robert F.3, and MANDERNACK, Kevin W.1, (1) Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, CO 80401, chmills@usgs.gov, (2) School of Geography and Earth Sciences, McMaster University, Hamilton, ON L8S 4K1, Canada, (3) Department of Chemistry & Biochemistry, Old Dominion University, Norfolk, VA 23529
157-63:00 PM WEATHERING, MARINE, AND VOLCANIC EMISSION CONTRIBUTIONS OF SULFUR TO HAWAIIAN ECOSYSTEMS AND SOILS: BERN, Carleton R., Univ of California - Santa Barbara, Santa Barbara, CA 93106, cbern@usgs.gov, KENDALL, Carol, U.S. Geological Survey, MS 434, 345 Middlefield Rd, Menlo Park, CA 95025, HARTSHORN, Tony, Department of Geography, Univ of California, Santa Barbara, and CHADWICK, Oliver A., Univ California - Santa Barbara, 3611 Ellison Hall, Santa Barbara, CA 93106
157-73:15 PM ORGANIC MATTER AND STABLE ISOTOPIC RECORD IN NAINITAL LAKE SEDIMENTS IN KUMAUN HIMALAYAS, INDIA: CHOUDHARY, Preetam1, ROUTH, Joyanto2, CHAKRAPANI, Govind J.1, and KUMAR, Bhishma3, (1) Department of Earth Sciences, Indian Institute of Technology, Roorkee, 247667, India, ponamdes@iitr.ernet.in, (2) Department of Geology and Geochemistry, Stockholm University, Stockholm, S-10691, Sweden, (3) National Institute of Hydrology, Roorkee, 247667, India
 3:30 PM Break
157-83:40 PM NITRIFICATION AND DENITRIFICATION IN A GROUNDWATER CONTAMINANT PLUME ON CAPE COD—SORTING THROUGH PHYSICAL, GEOCHEMICAL AND BIOLOGICAL CONTROLS ON PROCESS FUNCTION: SMITH, Richard L., U.S. Geological Survey, 3215 Marine St, Boulder, CO 80303, rlsmith@usgs.gov
157-94:00 PM DISCERNING THE LIMITING NUTRIENT TO PHYTOPLANKTON GROWTH IN RIVERS AND BAYOUS ON THE NORTH SHORE OF LAKE PONTCHARTRAIN: FEARNLEY, Sarah M. and BOHLING, Carl W., University of New Orleans, Research and Technology Park, CERM bldg., Rm. 358, 2000 Lakeshore Drive, New Orleans, LA 70148, cbohling@uno.edu
157-104:15 PM CHANGES IN RIVER ECOLOGICAL FUNCTIONALITY DUE TO RAPID ALTERATIONS OF CHANNEL MORPHOLOGY IN TWO CALIFORNIA RIVERS: ESCOBAR, Marisa I., Land, Air, and Water Resources, Univ of California, Davis, 219 Veihmeyer Hall, 1 Shields Avenue, Davis, CA 95616, miescobar@ucdavis.edu and PASTERNACK, Gregory B., Land, Air, and Water Resources, Univ of California, Davis, 211 Veihmeyer Hall, 1 Shields Avenue, Davis, CA 95616
157-114:30 PM MICROBIAL MEDIATION OF CARBONATE PRECIPITATION: SATURATION INDEX, EXOPOLYMERIC SUBSTANCES AND COMMUNICATION: VISSCHER, Pieter T., BRAISSANT, Olivier, and DUPRAZ, Christophe, Marine Sciences/Geosciences, University of Connecticut, 1080 Shennecossett Road, Groton, CT 06340, pieter.visscher@uconn.edu
157-124:45 PM ECOLOGY MEETS GEOCHEMISTRY: A NATIONAL ASSESSMENT OF THE BIOGEOGRAPHY OF MICROBIAL COMMUNITIES IN SOILS: WALDROP, Mark P., U. S. Geological Survey, 345 Middlefield Road, MS 962, Menlo Park, CA 94025, mwaldrop@usgs.gov and HOLLOWAY, JoAnn M., U.S. Geological Survey, Denver Federal Center, Bldg 20, M.S. 964, Denver, CO 80225
157-135:00 PM INFLUENCE OF PARENT LITHOLOGY ON SOIL MICROBIAL COMMUNITIES AS DEFINED BY PHOSPHOLIPID FATTY ACIDS: HOLLOWAY, JoAnn M., U.S. Geological Survey, Denver Federal Center, Bldg 20, M.S. 964, Denver, CO 80225, jholloway@usgs.gov, MORRISON, Jean M., Crustal Imaging and Characterization, USGS, Denver Federal Center, MS 973, Denver, CO 80225, and GOLDHABER, Martin B., Crustal Imaging and Characterization, U. S. Geological Survey, Bldg 20, MS 964, Denver Federal Center, Denver, CO 80027
157-145:15 PM THE GOLDILOCKS CATENAS OF SOUTH AFRICA: MAXIMUM SOIL DIFFERENTIATION ACROSS GRANITIC HILLSLOPES: HARTSHORN, Tony1, KHOMO, Lesego2, HEIMSATH, Arjun3, ROGERS, Kevin2, and CHADWICK, Oliver A.4, (1) Department of Geology and Environmental Science, James Madison University, 7105A Memorial Hall, MSC 6903, Harrisonburg, VA 22807, soildoc@gmail.com, (2) Animal, Plant, and Environmental Sciences, University of the Witwatersrand, Private Bag 3, Johannesburg, Wits 2050, (3) Department of Earth Sciences, Dartmouth College, Hanover, NH 03755, (4) Department of Geography, University of California, Santa Barbara, CA 93106-4060

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