Friday, August 10, 2007: 8:00 AM-11:30 AM
Blrm Salon VI, San Jose Marriott
COS 147 - Ecology of arid and semi-arid habitats: II
8:00 AMCOS 147-1Wind erosion and dust flux in undisturbed and disturbed dryland ecosystem along the grassland-forest continuum: A conceptual framework spanning gradients of woody plants
David D. Breshears, University of Arizona, Jeffrey J. Whicker, Los Alamos National Laboratory, Chris B. Zou, University of Arizona, Jason P. Field, University of Arizona, Craig D. Allen, USGS Jemez Mountains Research Center
8:20 AMCOS 147-2Micronutrient availability affects sunscreen production but not growth in biological soil crusts
Matthew Bowker, Northern Arizona University, George W. Koch, Northern Arizona University, Jayne Belnap, U.S. Geological Survey, Nancy C. Johnson, Northern Arizona University
8:40 AMCOS 147-3Hydrologic and aeolian controls on vegetation patterns in arid landscapes
Sujith Ravi, University of Virginia, Paolo D'Odorico, University of Virginia, Greg Okin, UCLA
9:00 AMCOS 147-4Untangling the biological contributions to soil stability in semi-arid shrublands
Veer B.- Chaudhary, Northern Arizona University, Matthew Bowker, Northern Arizona University, James B. Grace, United States Geological Survey, Nancy Johnson, Northern Arizona University, Andrea Redman, Northern Arizona University
9:20 AMCOS 147-5Biological soil crusts and plant recruitment in a fragmented, semi-arid landscape: Implications for restoration
Cassia Read, The University of Melbourne, Jane Elith, The University of Melbourne, Peter Vesk, The University of Melbourne, D. Duncan, The University of Melbourne
9:40 AM Break
9:50 AMCOS 147-6The functional role of carbonate-cemented soil horizons in desert ecosystems: Spatial and temporal dynamics of plant water availability
Michael C. Duniway, USDA Agricultural Research Service, Jeffrey E. Herrick, USDA Agricultural Research Service, Curtis Monger, New Mexico State University
10:10 AMCOS 147-7Biogenic carbon accumulation across a cold desert dune chronosequence
Michal I. Shuldman, University of California Davis, Zachary T. Aanderud, University of California Davis, James H. Richards, University of California Davis
10:30 AMCOS 147-8Effects of five years of increased seasonal precipitation on aboveground ANPP and species composition in Big Bend National Park in the Chihuahuan Desert
Traesha R. Robertson, Texas Tech University, John C. Zak, Texas Tech University, David T. Tissue, Texas Tech University

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