Thursday, August 10, 5:00-6:30 pm
Poster Session 23 - Arid and semi-arid ecosystems: deserts, grasslands, shrublands, and savannas
Exhibit Hall, Ballroom Level, Cook Convention Center
Poster # 70. Ritchie, Jerry*,1, Schmugge, Thomas2, Hsu, Ann1, 1 USDA ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD, USA2 Gerald Thomas Professor of Water Resources, Las Cruces, NM, USA, Using arid ecosystems to compare ASTER, MASTER, and ground reflectance measurements.
Poster # 71. Macko, Stephen*,1, Wang, Lixin1, 1 University of Virginia, Charlottesville, VA, Natural abundance 15N gradients across different ecosystems.
Poster # 72. McCrackin, Michelle*,1, Harms, Tamara1, Grimm, Nancy1, 1 Arizona State University, Tempe, AZ, The sky is falling: soil microbial responses to deposition from the urban atmosphere.
Poster # 73. Huerta-Martinez, Martin*,1, Muñoz-Urias, Alejandro1, García-Moya, Edmundo2, 1 Universidad de Guadalajara, Guadalajara, Jalisco, Mexico2 Colegio de Posgraduados, Texcoco, Estado de Mexico, Mexico, Assessment of relative importance of climate and soil on plant associations in a semiarid area of central Mexico.
Poster # 74. Gutiérrez, Julio*,1, 2, 3, Squeo, Francisco1, 2, 3, Aguilera, Lorgio1, Valdivia, Luis1, Meserve, Peter4, Kelt, Douglas4, 1 Universidad de La Serena, La Serena, Chile2 Centro de Estudios Avanzados en Zonas Áridas, La Serena, Chile3 Instituto de Ecología y Biodiversidad, Santiago, Chile4 Northern Illinois University, DeKalb, IL, The effects of shrubs on ephemeral plants: soil or canopy?
Poster # 75. Gayvert, Stephanie*,1, Walker, Lawrence1, 1 University of Nevada, Las Vegas, Las Vegas, NV, Effects of germination timing on competition between Brassica tournefortii and native Mojave Desert species.
Poster # 76. Hall, Sharon *,1, Grimm, Nancy1, Kaye, Jason2, 3, Allen, Jonathan3, 1 Arizona State University, Tempe, AZ, USA2 The Pennsylvania State University, University Park, PA, USA3 Arizona State University, Tempe, AZ, USA, Ecosystem response to the urban atmosphere in the Sonoran Desert.
Poster # 77. Tyler, Anna*,1, Huxman, Travis1, Pavao-Zuckerman, Mitchell1, Venable, D. Lawrence1, 1 University of Arizona, Tucson, AZ, Annual and ephemeral plants are important for shrub-island development and ecosystem processes in arid regions.
Poster # 78. Clark, Naomi*,1, Nowak, Robert1, 1 University of Nevada, Reno, Reno, NV, Effects of elevated CO2 on the root respiration rates of two Mojave Desert shrubs.
Poster # 79. Holmgren, Milena*,1, Lopez, Bernat2, Gutierrez, Julio3, Squeo, Francisco3, 1 University of Wageningen, Wageningen, The Netherlands2 CREAF and Universidad Autonoma de Barcelona, Barcelona, Spain3 CEAZA and Universidad de La Serena, La Serena, Chile, ENSO events enhance tree establishment in arid and semi-arid South America.
Poster # 80. Reichmann, Lara*,1, Sala, Osvaldo1, 1 Brown University, Providence, RI, Meristem density constrains primary production variability along a precipitation gradient in the Patagonian steppe, Argentina.
Poster # 81. Flombaum, Pedro*,1, Sala, Osvaldo1, 1 Ecology and Evolutionary Department, Providence, RI, Biodiversity and invasion of species: the Patagonian steppe as a model ecosystem.
Poster # 82. Mata-Gonzalez, Ricardo*,1, McLendon, Terry1, Martin, David2, Trlica, M3, Pearce, Robert4, 1 MWH Americas, Inc., Fort Collins, CO2 Los Angeles Department of Water and Power, Bishop, CA3 Colorado State University, Fort Collins, CO4 Natural Resources Conservation Service (NRCS-USDA), Bishop, CA, Plant cover as related to groundwater depth in Owens Valley, CA.
Poster # 83. Bell, Colin*,1, Zak, John1, Grizzle, Heath1, Cox, Stephen2, Tissue, David1, Sirotnak, Joe3, 1 Texas Tech University, Lubbock, TX2 Texas Institute for Environmental and Human Health, Lubbock, TX3 Big Bend National Park, Big Bend, TX, Microbial carbon and nitrogen mineralization dynamics in desert grassland soils of Big Bend NP as influenced by global climate change.
Poster # 84. Zimmermann, Craig*,1, Resinger, Jen1, Zak, John1, Sirotnak, Joe2, 1 Department of Biological Sciences, Lubbock, TX, USA2 Resource Management Division, Big Bend National Park, TX, USA, Seasonal patterns in microbial biomass and nitrogen dynamics in degraded grasslands of Big Bend National Park.
Poster # 85. Throop, Heather*,1, Archer, Steven1, McMurtry, Chad1, McClaran, Mitchel1, 1 University of Arizona, Tucson, AZ, Relationships between aboveground woody biomass and soil organic carbon in a semi-desert grassland.
Poster # 86. Ziemann, Renee1, Johnson, Jennifer*,1, Collins, Scott1, 1 University of New Mexico, Albuquerque, NM, USA, The effect of grazing on composition and abundance of weedy species in desert grassland.
Poster # 87. Keber, Robin*,1, Banack, Sandra1, 1 California State University, Fullerton, Fullerton, CA, The influence of artichoke thistle on hummingbird populations.
Poster # 88. Miles, Erin*,1, Knops, Johannes1, 1 University of Nebraska, Lincoln, Lincoln, NE, USA, How does the identity of the dominant species affect the composition of grassland communities?
Poster # 89. He, Jin-Sheng1, Flynn, Dan*,1, 2, Wang, Liang1, Fang, Jingyun1, Ma, Wenhong1, Wang, Xiangping1, 1 Peking University, Beijing, China2 Columbia University, New York, NY, C:N:P across Chinese grasslands: comparison with global patterns of leaf stoichiometry.
Poster # 91. Bing, Christopher1, Sollenberger, David2, Egerton-Warburton, Louise*,2, 3, 1 University of California, Santa Barbara, CA2 Chicago Botanic Garden, Glencoe, IL3 Northwestern University, Evanston, IL, Soil feedback mechanisms in prairie restoration.
Poster # 92. Laungani, Ramesh*,1, Knops, Johannes*,1, 1 University of Nebraska, Lincoln, Lincoln, NE, Plant competition: a shifting balance of limiting resources.
Poster # 93. Klopf, Ryan*,1, Campbell, Ryan*,1, Baer, Sara1, 1 Southern Illinois University, Carbondale, IL, 62901, Above- and belowground production patterns and effects on soil nitrogen availability among species and source populations of dominant prairie grasses.
Poster # 94. Zhou, Xuhui*,1, Wan, Shiqiang2, Luo, Yiqi1, 1 University of Oklahoma, Norman, OK, USA2 The Chinese Academy of Sciences, Xiangshan, Beijing, China, Partitioning sources of soil CO2 efflux and their interannual variability under experimental warming in a tallgrass prairie ecosystem.
Poster # 95. Kitchen, Duane*,1, Blair, John2, 1 Rockford College, Rockford, IL, USU2 Kansas State University, Manhattan, KS, USA, Effects of annual fire and mowing on fine root dynamics in tallgrass prairie.
Poster # 96. McLachlan, Megan*,1, Fuhlendorf, Sam1, 1 Oklahoma State University, Stillwater, OK, Conservation Reserve Program (CRP) land as breeding bird habitat in the northern shortgrass prairie of North America.
Poster # 97. Turner, Gregory*,1, Demkó, Marianne2, 1 West Chester University of Pennsylvania, West Chester, PA2 Virginia Western Community College, Roanoke, VA, Plant distributions along disturbance corridors at a Blue Ridge Mountain natural area.
Poster # 98. Windish, Johanna*,1, Puhr, Robert1, Gove, Stephanie1, McConnaughay, Kelly1, Morris, Sherri1, 1 Bradley University, Peoria, IL, Consequences of bluff prairie restoration for soil and plant community dynamics.
Poster # 99. Peters, Debra*,1, Monger, H.2, Herrick, Jeffrey1, 1 USDA ARS, Jornada Experimental Range, Las Cruces, NM, USA2 New Mexico State University, Las Cruces, NM, USA, Changes in perennial grass recruitment from 1858 to present following woody plant invasion.
Poster # 101. Calabrese, Laura*,1, 1 University of New Mexico, Albuquerque, NM, An ecological approach to the restoration of shrub-invaded Chihuahuan desert grassland in the southwestern US.
Poster # 102. Browning, Dawn*,1, Archer, Steve1, 1 University of Arizona, Tucson, AZ, Spatial patterns and trends in woody plant (Prosopis velutina) biomass accumulation with contrasting grazing practices (1932 to 1949).
Poster # 103. Watrud, Lidia1, Bollman, Mike2, Storm, Marjorie 2, King, George*,2, 1 US Environmental Protection Agency, Corvallis, OR2 Dynamac Corporation, Corvallis, OR, Environmental and floristic factors affecting the establishment of transgenic Agrostis stolonifera in non-agricultural habitats in central Oregon.
Poster # 105. Mazzola, Monica*,1, Chambers, Jeanne, 1 University of Nevada-Reno, Reno, NV, Effects of sucrose addition and seeding density on native species and cheatgrass establishment in sagebrush ecosystems.
Poster # 106. Bono, Julieta*,1, Brouver, Marcelo1, Stamati, Mariana1, Parmuchi, Gabriela1, Manghi, Eduardo1, Montenegro, Celina1, 1 Unidad de Manejo del Sistema de Evaluación Forestal, Argentina, Analysis of current structure and tree composition in the semiarid Chaco.
Poster # 107. Ries, Lydia*,1, Shugart, Herman1, Kgope, Barney2, 1 University of Virginia, Charlottesville, VA2 South Africa National Biodiversity Institute, Cape Town, Western Province, South Africa, Nutrients and soil moisture limitations in the Kalahari region of southern Africa.
Poster # 108. Driskill, Scott*,1, Benning, Tracy1, Saah, David1, 1 University of San Francisco, San Francisco, California, Assessing the distribution of herbaceous biomass within Kruger National Park, South Africa.
Poster # 109. Genova, Robert*,1, Saah, David1, Driskill, Scott1, Benning, Tracy1, 1 University of San Francisco, San Francisco, CA, USA, Development of a user-friendly management tool to assess spatial and functional heterogeneity in a South African savanna ecosystem.
Poster # 110. Saah, David*,1, Genova, Robert1, Driskill, Scott1, Benning, Tracy1, 1 University of San Francisco, San Francisco, CA, USA, Do riparian habitat types significantly impact the function of African savannas: a test using ArcCentury.
Poster # 111. Litvak, Marcy*,1, Thijs, Ann2, 1 University of New Mexico, Albuquerque, NM2 University of Texas, Austin, TX, The impact of woody encroachment on carbon dynamics in a C3/C4 grassland in Texas.
Poster # 112. Monje, Oscar*,1, Eraso, Ignacio1, Drake, Bert2, Hungate, Bruce3, Johnson, David2, Sager, John 3, 1 Space Life Sciences Lab, Kennedy Space Center, Fl2 Smithsonian Environmental Research Center, Edgewater, MD3 Northern Arizona University, Flagstaff, AZ, Monitoring air quality of natural and CO2-enriched Florida scrub-oak ecosystems.
Poster # 113. Carmichael, Becky*,1, Platt, William 1, 1 Louisiana State University, Baton Rouge, LA, The combined influence of small-scale disturbances on the groundcover in a restored longleaf pine savanna.
Poster # 114. O'Brien, Joseph*,1, Hiers, J. Kevin2, Will, Rodney3, Mitchell, Robert4, 1 USDA Forest Service, Athens, Ga2 The Nature Conservancy, Thomasville, Ga3 Oklahoma State University, Stillwell, OK4 Joseph W. Jones Ecological Research Center, Newton, Ga, Litter versus shade: partitioning the effects of forest floor accumulation and midstory canopy development on understory density and species richness in Pinus palustris sand hill communities.
Poster # 115. Clinton, Barton*,1, Ford, Chelcy1, Maier, Chris2, 1 USDA Forest Service Southern Research Station, Otto, NC2 USDA Forest Service Southern Research Station, RTP, NC, Transient changes in transpiration, stem CO2 efflux, and soil respiration in longleaf pine following leaf area reduction.
Poster # 116. Falkey, Jennifer*,1, 2, Mitchell, Robert 2, Hendrick, Ronald1, Markewitz, Daniel 1, Pecot, Stephen 2, 1 University of Georgia, Athens, GA2 Joseph W. Jones Ecological Research Center, Newton, GA, Disturbance frequency and changes in plant growth life-form: ecosystem effects on NPP.
Poster # 117. Gayvert, Stephanie*,1, Walker, Lawrence1, 1 University of Nevada, Las Vegas, Las Vegas, NV, Effects of germination timing on competition between Brassica tournefortii and native Mojave Desert species.
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