Monday, August 6, 2007: 5:00 PM-6:30 PM
Exhibit Halls 1 and 2, San Jose McEnery Convention Center
PS 3 - Arid and semi-arid systems
PS 3-28		Biogeography of microbiotic crusts in Joshua Tree National Park Nicole Pietrasiak, John Carroll University, Jeffrey R. Johansen, John Carroll University, Tasha La Doux, National Park Service
PS 3-29		Annual CO2 flux from a biological soil crust system on the Colorado Plateau: Effects of increased temperature and summer precipitation David C. Housman, U.S. Geological Survey, Edmund E. Grote, U.S. Geological Survey, Jayne Belnap, U.S. Geological Survey
PS 3-30		Photosynthetic responses of desert mosses to temperature and hydration Kirsten K. Coe, Cornell University, Jayne Belnap, U.S. Geological Survey, Jed P. Sparks, Cornell University
PS 3-31		Temporal fluctuations in shrub-associated annual plant communities in the Mojave Desert Hadas A. Parag, Rutgers University, Claus Holzapfel, Rutgers University Newark
PS 3-32		Plant community structure of the Upper Las Vegas Wash, Nevada: The influences of geomorphology and soil physical and chemical properties Amy A. Croft, Utah State University, James A. MacMahon, Utah State University, Janis L. Boettinger, Utah State University, Thomas C. Edwards, Utah State University, Glen Busch, Utah State University
PS 3-33		Contrasting water-use patterns among coastal semiarid plant species Cristina Armas, Duke University, Francisco M. Padilla, Estacion Experimental de Zonas Aridas (CSIC), Francisco I. Pugnaire, Estacion Experimental de Zonas Aridas (CSIC), Robert B Jackson, Duke University
PS 3-34		Where does the water come from? A case study of two endangered plant species Niles J. Hasselquist, University of California, Riverside, Michael F. Allen, University of California Riverside
PS 3-35		Microhabitat is critical for sugar pine emergence and survival in a xeric Jeffrey pine dominated forest Elaine C. Hager, University of Nevada, Reno, Stephen B. VanderWall, University of Nevada, Reno
PS 3-36		Saguaro mortality 10 years after the River Fire, Arizona Ruth C. Wilson, California State University, San Bernardino, Marcia Narog, Pacific Southwest Research Station
PS 3-37		Assessing the spatiotemporal patterns of primary production in the Central Arizona-Phoenix region using remotely sensed data Alexander Buyantuyev, Arizona State Universirty, Jianguo Wu, Arizona State Universirty
PS 3-38		Influence of buffelgrass pasture conversion on the regeneration, and reproduction of the columnar cactus, Pachycereus pecten-aboriginum in northwestern Mexico Daniel Morales-Romero, Instituto de Ecologia, Universidad Nacional Autonoma de Mexico, Francisco Molina-Freaner, Instituto de Ecologia, Universidad Nacional Autonoma de Mexico
PS 3-39		Water sources and nitrogen relations of grasses and shrubs in phreatophytic communities of the Great Basin Desert Diane E. Pataki, University of California, Irvine, Sharon A. Billings, University of Kansas, Elke Naumburg, Glorieta Geoscience, Inc., Christine M. Goedhart, University of California, Irvine
PS 3-40		Effects of water frequency on individual plant performance: Implications for restoration Jayanthi Mukherjee, Utah State University, Thomas A. Jones, Utah State University, Peter B. Adler, Utah State University, Thomas A. Monaco, Utah State University
PS 3-41		A model of vegetation structure constraining productivity in response to changes in water availability Lara G. Reichmann, Brown University, Osvaldo E. Sala, Brown University, Edward B. Rastetter, Marine Biological Lab
PS 3-42		Production of two exotic grasses and one desert native annual under altered precipitation and nitrogen regimes: Implications for fire in the desert Leela E. Rao, Univeristy of California, Riverside, Edith B. Allen, Univeristy of California, Riverside
PS 3-43		Applying the Dahlem Desertification Paradigm (DDP) to assess water use in a coupled human-ecological system: A case study in La Amapola, Mexico Javier E. Garcia de Alba Verduzco, Instituto Potosino de Investigacion Cientifica y Tecnologica, Tulio Arredondo, Instituto Potosino de Investigacion Cientifica y Tecnologica, Elisabeth Huber-Sannwald, Instituto Potosino de Investigacion Cientifica y Tecnologica, Monica Ribeiro Palacios, Instituto Potosino de Investigacion Cientifica y Tecnologica, Miguel Aguilar Robledo, Universidad Autonoma de San Luis Potosi, James F. Reynolds, Duke University
PS 3-44		Applying the Dahlem Desertification Paradigm (DDP) to assess key supporting ecosystem services in a coupled human-ecological system: A case study in La Amapola, Mexico Mónica Ribeiro Palacios, Instituto Potosino de Investigacion Cientifica y Tecnologica, Elisabeth Huber-Sannwald, Instituto Potosino de Investigacion Cientifica y Tecnologica, Javier E. Garcia de Alba Verduzco, Instituto Potosino de Investigacion Cientifica y Tecnologica, Humberto Reyes Hernandez, Universidad Autonoma de San Luis Potosi, James F. Reynolds, Duke University
PS 3-45		Effect of experimental drought and water addition on community dynamics in three aridland plant communities Jennifer Johnson, University of New Mexico, Scott L. Collins, University of New Mexico, Eric E. Small, University of Colorado, William T. Pockman, University of New Mexico

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