8:00 AM: Lauenroth, William^*,1, Bradford, John², ¹ Colorado State University, Fort Collins, CO, USA² USDA Forest Service Rock Mountain Station, Fort Collins, CO, USA, The temporal and spatial distributions of precipitation: Ecological and ecohydrological significance.

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8:20 AM: Fay, Philip^*,1, Smith, Melinda², Travers, Steven³, Nippert, Jesse⁴, Blair, John³, Garrett, Karen³, ¹ Natural Resources Research Institute, Duluth, MN, USA² Yale University, New Haven, CT, USA³ Kansas State University, Manhattan, KS, USA⁴ Colorado State University, Ft Collins, CO, USA, Ecological responses to precipitation quantity and frequency in grasslands: Pattern and process from the gene to the ecosystem.

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8:40 AM: Belnap, Jayne^{*,1, 2}, Smith, Stanley³, Housman, David¹, Zimpfer, Jeff⁴, ¹ Southwest Biological Science Center, Moab, UT, USA² Natural Resource Ecology Laboratory, Ft. Collins, CO, USA³ Department of Biological Sciences, Las Vegas, NV, USA⁴ Pacific Aquaculture and Coastal Resources Center, Hilo, HI, USA, Effects of altered precipitation on biological soil crusts.

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9:00 AM: Weltzin, Jake^*,1, ¹ University of Tennessee, Knoxville, TN, USA, Effects of invasive versus native grasses on soil moisture and woody plant seedling recruitment across contrasting soils and summer precipitation regimes in a temperate semi-arid savanna.

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9:20 AM: Tissue, David^*,1, Patrick, Lisa¹, Griffith, Alden², Alpert, Holly², Ignace, Danielle³, Cable, Jessie³, ¹ Texas Tech University, Lubbock, TX, USA² University of California, Santa Cruz, Santa Cruz, CA³ University of Arizona, Tucson, AZ, The effect of changes in timing and magnitude of precipitation on carbon and water fluxes: Scaling C3, C4 and CAM to ecosystem.

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9:40 AM: , BREAK.

9:50 AM: Snyder, Keirith^*,1, Maxwell, Connie¹, Cable, Jessica ², ¹ USDA-ARS Jornada Experimental Range, Las Cruces, NM² University of Arizona, Tucson, AZ, Multi-scale responses of carbon and water fluxes to magnitude and frequency of precipitation pulses in the northern Chihuahuan desert.

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10:10 AM: Pavao-Zuckerman, Mitchell^*,1, Cable, Jessica¹, Yepez, Enrico², Potts, Daniel¹, Huxman, Travis¹, Williams, David ², ¹ University of Arizona, Tucson² University of Wyoming, Laramie, Responses of soil community structure to plant species and precipitation inputs: Linking soil biota to ecosystem carbon cycling.

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10:30 AM: Williams, David¹, ¹ Departments of Renewable Resources and Botany, Laramie, WY, USA, Photosynthetic responses of riparian tree taxa to monsoonal moisture in the American Southwest: large-scale patterns across three warm-desert biomes.

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10:50 AM: Loik, Michael^*,1, ¹ University of California, Santa Cruz, CA, USA, Plant, community, and ecosystem responses to long-term snow depth forcing.

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11:10 AM: Smith, Stanley^*,1, Huxman, Travis², Charlet, Therese¹, Zitzer, Stephen³, Babcock, Derek⁴, DeSoyza, Amrita⁴, ¹ University of Nevada, Las Vegas, Las Vegas, NV, USA² University of Arizona, Tucson, AZ, USA³ Desert Research Institute, Las Vegas, NV, USA⁴ University of Nevada, Reno, Reno, NV, USA, Interactions of precipitation and elevated CO₂: El Niño and annual plants in the Mojave Desert.

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