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2002 Denver Annual Meeting (October 27-30, 2002)

Session No. 28
Sunday, 27 October 2002: 8:00 AM-12:00 PM

T99. Geology, Biogeochemistry, and Ecology: A New Synthesis for Arid Landscape Processes

GSA Quaternary Geology and Geomorphology Division; GSA Geobiology and Geomicrobiology Division

 

Marith Cady Reheis and Robert L. Sanford, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:15 AM
DESERTIFICATION: CHANGES IN SOIL BIOGEOCHEMISTRY IN THE CHIHUAHUAN DESERT
SCHLESINGER, William H., Division of Earth and Ocean Sciences, Nicholas School of the Environ and Earth Sciences, Duke University, Durham, NC 27708, schlesin@duke.edu, schlesin@duke.edu
2
8:35 AM
SOIL GEOCHEMISTRY IN THE PRESENCE OF LIFE, OR LACK OF IT, ALONG A HYPERARID PRECIPITATION GRADIENT IN THE ATACAMA DESERT, CHILE
AMUNDSON, Ronald1, EWING, Stephanie1, SUTTER, Brad2 and WARREN-RHODES, Kimberley2, (1)Div. of Ecosytem Sciences, Univ. of California, 151 Hilgard Hall, Berkeley, CA 94720-3110, (2)NASA-Ames Rsch Ctr, MS 245-3, Moffett Field, CA 94035, earthy@nature.berkeley.edu, earthy@nature.berkeley.edu
3
8:55 AM
ISOTOPIC EVIDENCE FOR THE SOURCE OF CA AND S IN SOIL GYPSUM/ANHYDRITE AND CALCITE IN THE ATACAMA DESERT, CHILE
RECH, Jason A.1, QUADE, Jay2 and HART, William S.2, (1)Geology, Miami Univ, Oxford, OH 45056, (2)Department of Geosciences, Univ of Arizona, Tucson, AZ, rechja@muohio.edu, rechja@muohio.edu
4
9:10 AM
MICROCLIMAE, WEATHERING AND LICHENS IN THE CENTRAL NAMIB DESERT: A 3 YEAR INVESTIGATION OF BIOGEOMORPHIC INTERACTIONS
VILES, Heather A., School of Geography and the Environment, Univ of Oxford, Mansfield Road, Oxford, OX1 3TB, United Kingdom, heather.viles@geog.ox.ac.uk, heather.viles@geog.ox.ac.uk
5
9:25 AM
DESERT PAVEMENT SURFACE CHARACTERISTICS AND THEIR CORRELATIONS WITH SOILS AND PLANT DISTRIBUTIONS, CIMA VOLCANIC FIELD, CALIFORNIA
WOOD, Yvonne A., Department of Soil & Environmental Sciences, University of California, Riverside, CA 92521-0424, GRAHAM, Robert C., Univ California - Riverside, Dept Soil & Environmental Science, Riverside, CA 92521-0424 and WELLS, Stephen G., Desert Rsch Institute, 2215 Raggio Pkwy, Reno, NV 89512-1095, yvonne@citrus.ucr.edu, yvonne@citrus.ucr.edu
6
9:40 AM
EOLIAN SAND SUPPLY TO COACHELLA VALLEY FRINGE-TOED LIZARD HABITAT IN THE NORTHERN COACHELLA VALLEY, CALIFORNIA
GRIFFITHS, Peter G.1, WEBB, Robert H.1 and LANCASTER, Nicholas2, (1)U.S. Geological Survey, 1675 W. Anklam Rd, Tucson, AZ 85745, (2)Division of Earth and Ecosystem Sciences, Desert Rsch Institute, Reno, NV 89512, pggriffi@usgs.gov, pggriffi@usgs.gov
 
9:55 AM
Discussion
7
10:10 AM
DETERMINANTS OF SOIL BIODIVERSITY AND ECOSYSTEM FUNCTIONING IN THE ANTARCTIC DRY VALLEYS
WALL, Diana H. and PARSONS, A.N., Natural Resource Ecology Laboratory, Colorado State Univ, Fort Collins, CO 80523, diana@nrel.colostate.edu, diana@nrel.colostate.edu
8
10:30 AM
USING GEOLOGY TO PREDICT SITES OF ANNUAL GRASS INVASIONS OR MAKE SURE THERE IS “GEO” IN YOUR “ECO”
BELNAP, Jayne1, REHEIS, Marith2, REYNOLDS, Richard2 and PHILLIPS, Susan L.1, (1)BRD-FRESC, US Geol Survey, 2290 S. Resource Blvd, Moab, UT 84532, (2)U.S. Geol Survey, Federal Center, Denver, CO 80225, jayne_belnap@usgs.gov, jayne_belnap@usgs.gov
9
10:50 AM
PHOSPHORUS AVAILABILITY CHANGES SEASONALLY IN EOLIAN DUST INPUTS AND IN SURFACE SOILS
SANFORD Jr, Robert L., Biological Sciences, Univ of Denver, 2190 East Iliff Ave, Denver, CO 80208, REHEIS, Marith Cady, US Geol Survey, PO Box 25046, Denver, CO 80225-0046 and BELNAP, Jayne, BRD-FRESC, US Geol Survey, 2290 S. Resource Blvd, Moab, UT 84532, rsanford@du.edu, rsanford@du.edu
10
11:05 AM
RELATIONSHIPS BETWEEN POSTFIRE SAGUARO SHRUB SPECIES, SOIL DEVELOPMENT AND LANDSCAPE MORPHOLOGY ON A DISSECTED ALLUVIAL FAN SURFACE, TONTO NATIONAL FOREST, ARIZONA
JENNINGS, Karen L.1, NAROG, Marcia G.1, HUBBERT, Ken R.1, WILSON, Ruth L.2 and ABORDO, Adrian1, (1)USDA Forest Service, Pacific Southwest Rsch Station, 4955 Canyon Crest Dr, Riverside, CA 92507, (2)Biology Dept, Cal State San Bernardino, 5500 University Parkway, San Bernardino, CA 92407, kjennings@fs.fed.us, kjennings@fs.fed.us
11
11:20 AM
GEOLOGICAL CONTROL OF PLANT SPECIES DISTRIBUTION IN WYOMING
REINERS, William A., Wyoming Geographic Information Science Center, Univ of Wyoming, Laramie, WY 82071-4008, FERTIG, Walter C., Grand Staircase-Escalante National Monument, Bureau of Land Managment, 190 East Center St, Kanab, UT 84741 and THURSTON, Robert C., Wyoming Natural Diversity Database, Univ of Wyoming, Laramie, WY 82071-3381, reiners@uwyo.edu, reiners@uwyo.edu
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