Poster # 69. O'Brady, Caitlin^*,1, Creveling, Jc^*,1, Hall, Sharon¹, ¹ Colorado College, Colorado Springs, CO, USA, Neighborhood effects of N-fixing Morella faya on understory plant nutrients and soil N cycling.

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Poster # 70. Barto, Kathryn^*,1, Cipollini, Don¹, ¹ Wright State University, Dayton, OH, Localization of secondary compounds produced by Alliaria petiolata and their allelopathic potential against plants and mycorrhizae.

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Poster # 71. Blumenthal, Dana¹, LeCain, Dan¹, Morgan, Jack¹, Chimner, Rod², Welker, Jeff³, ¹ USDA-ARS Rangeland Resources Research Unit, Fort Collins, Colorado, USA² Colorado State University, Fort Collins, Colorado³ University of Alaska - Anchorage, Anchorage, Alaska, Manipulation of precipitation and N alters weed invasion of northern mixed-grass prairie.

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Poster # 72. Goergen, Erin^*,1, Vinton, MaryAnn², ¹ Ecology, Evolution & Conservation Biology Graduate Group, Reno, NV, USA² Biology Department, Omaha, NE, USA, Plant-soil feedbacks contribute to the persistence of Bromus inermis in tallgrass prairie.

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Poster # 73. Horton, Jonathan^*,1, Hill, Judson², Germino, Matthew ², ¹ UNC-Asheville, Asheville, NC, USA² Idaho State University, Pocatello, ID, USA, Contribution of deep soil moisture to infestation of disturbed sagebrush-steppe by exotic perennial forbs.

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Poster # 74. Kleiner, Karl^*,1, Smith, Gwen¹, ¹ York College of Pennsylvania, York, PA, Effects of tree species on soil bacterial communities and positive feedback on Ailanthus altissima.

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Poster # 75. Lewis, James^*,1, Rubino, Lucy¹, Griffin, Kevin², Tissue, David³, ¹ Fordham University, Armonk, NY, USA² Columbia University, Palisades, NY, USA³ Texax Tech University, Lubbock, TX, USA, Phosphorus and nitrogen supply affect growth but not development rates in Xanthium strumarium.

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Poster # 76. Patel, Manisha^*,1, Ross, Kristen¹, Ehrenfeld, Joan¹, ¹ Rutgers, the State University of New Jersey, New Brunswick, NJ, USA, Growth response of exotic and native forest understory species to different forms of nitrogen nutrition.

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Poster # 77. Szlavecz, Katalin ^*,1, Juhszova, Katarina¹, Groffman, Peter², ¹ Dept. of Earth and Planetary Sciences, Baltimoe, MD, USA² Institute of Ecosystem Studies, Millbrook, NY, USA, Invasive Soil Invertebrates and N-Cycling: Do Species Matter?

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Poster # 78. Yavitt, Joseph^*,1, Williams, Christopher², ¹ Cornell University, Ithaca, NY² Franklin & Marshall College, Lancaster, PA, Soil organic matter composition beneath native and invasive plant species in a peat-forming wetland, New York State.

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Poster # 79. Brändle, Martin^*,1, Belle, Christina¹, Brandl, Roland¹, ¹ Philipps University Marburg, FB Biology, Department of Animal Ecology, Marburg, Germany, Diversity of phytophagous insects on non-indigenous woody plants.

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Poster # 81. Caesar, Anthony^*,1, ¹ USDA/ARS Pest Management Research Unit, Sidney, MT, U.S.A., Nearest Neighbor Analysis of the Effects of the Rust Fungus Uromyces scutellatus on Euphorbia spp. in Europe.

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Poster # 82. Ackleh, Azmy¹, Allen, Linda², Carter, Jacoby^*,3, ¹ Department of Mathematics, Lafayette, LA, USA² Department of Mathematics and Statistics, Lubbock, Texas, USA³ U.S. Geological Survey, Lafayette, LA, USA, Establishing a beachhead: A stochastic Allee effect model applied to species invasion.

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Poster # 83. Drucker, Hilary^*,1, Brown, Cynthia¹, Stohlgren, Thomas^{1, 2}, Lane, Eric³, ¹ Colorado State University, Fort Collins, CO, USA² United States Geological Survey, Fort Collins, CO, USA³ Colorado Department of Agriculture, Denver, CO, USA, Development of regional invasive species watch lists.

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Poster # 85. Godoy, Wesley^*,, Serra, Hiraldo, Faria, Lucas, , Stochastic dynamics in coupled populations of exotic and native blowflies.

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Poster # 86. Juliano, Steven^*,1, ¹ Illinois State University, Normal, IL, USA, The roles of stage selective predation and prey behavioral responses to predators in determining the outcome of a biological invasion: models of mosquito invasions.

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Poster # 87. Keber, Robin^*,1, ¹ California State University, Fullerton, Fullerton, California, The influence of artichoke thistle on hummingbird populations.

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Poster # 88. Gomez-Zlatar, Patricia¹, Moulton, Michael^*,1, ¹ Department of Wildlife Ecology & Conservation, Gainesville, Florida, USA, Microhabitat use by the introduced gecko (Hemidactylus turcicus).

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Poster # 89. Oliveira, Luiz Flamarion^*,1, Rico , Miguel¹, Cordeiro, José Luis², ¹ Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil² Centro de Ecologia, Laboratório de Geoprocessamento, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil, Linking landscape features to potential interaction between feral and wild ungulates: the case of feral hogs and peccaries in the brazilian Pantanal wetland.

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Poster # 90. Phillips, Iain^*,1, Vinebrooke, Rolf¹, ¹ Department of Biological Sciences, Edmonton, Alberta, Canada, Effects of the crayfish Orconectes virilis on a recovering acidified lake ecosystem: A reintroduction or an invasion?

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Poster # 91. Pratt, Marney^*,1, ¹ Bowdoin College, Brunswick, ME, Invasive species as a new food source: does a native nudibranch prefer eating an invasive bryozoan?

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Poster # 92. Johnson, Mara^*,1, Rew, Lisa¹, Maxwell, Bruce¹, Menalled, Fabian¹, ¹ Montana State University, Bozeman, MT, Framework for integrating non-indigenous plant, insect, and pathogen species management with forest management activities planning.

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Poster # 93. Romagosa, Christina^*,1, ¹ Auburn University, Auburn, AL, Patterns of live vertebrate importation into the United States: a description of an invasion pathway.

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Poster # 94. Smith, Nancy^*,1, ¹ Eckerd College, St. Petersburg, FL, USA, Effect of species richness on the recruitment of a nonindigenous mussel in Tampa Bay, Florida.

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Poster # 95. Sorte, Cascade^{*,1, 2}, Grosholz, Edwin², Blake, Rachael², Christiansen, Nicole², Love, Christal², Mahl, Ursula², ¹ Bodega Marine Laboratory, Bodega Bay, CA² University of California-Davis, Davis, CA, Ecosystem engineering by the invasive Spartina hybrid: impacts of above- and below-ground structure on benthic invertebrate communities.

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Poster # 96. Stinson, Kristina^*,1, Klironomos, John², ¹ Harvard Forest, Petersham, MA² University of Guelph, Guelph, Ontario, I. Exotic plant invasion degrades local mycorrhizal association, alters community succession and limits restoration.

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Poster # 97. Thum, Ryan^{*,1, 2}, Lennon, Jay^{1, 3}, ¹ Dartmouth College, Hanover, NH, USA² Cornell University, Ithaca, NY, USA³ Brown University, Providence, RI, USA, Ecological genetics of a milfoil invasion.

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Poster # 98. Topa, Mary^*,1, Burke, David², Chapin, Carmen³, ¹ The Holden Arboretum, Kirtland, OH, USA² State University of New York -, Syracuse, NY³ National Park Service, Ashland, WI, USA, Biocontrol of purple loosestrife by the leaf-feeding beetle Galerucella: Potential cumulative effects on whole-plant carbon budgets.

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Poster # 99. Whitmire, Stefanie ^*,1, Tobin, Patrick², ¹ University of Puerto Rico, Mayaguez, PR, United States² USDA Forest Service Northeast Research Station, Morgantown, WV, United States, Persistence of invading gypsy moth populations in the United States.

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Poster # 100. Wolkovich, Elizabeth¹, Cottingham, Kathryn¹, Bolger, Douglas¹, ¹ Dartmouth College, Hanover, NH, Bottom-up effects of non-native grasses on arthropod communities.

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Poster # 101. Young, Lauren^*,1, Louda, Svata², ¹ Indiana University, Bloomington, IN² University of Nebraska, Lincoln, NE, Native insect herbivory provides resistance to a thistle invasion.

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Poster # 102. D'Appollonio, Jennifer ^*,1, Livingston, William¹, Wagner, Robert¹, ¹ University of Maine, Orono, ME, Regeneration strategies of Japanese barberry (Berberis thunbergii DC) in coastal forests of Maine.

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Poster # 103. Anderson, Christopher^{*,1, 2}, Rosemond, Amy¹, Griffith, Clayton¹, Rozzi, Ricardo^{2, 3, 4}, ¹ Institute of Ecology - University of Georgia, Athens, GA² Omora Ethnobotanical Park, Puerto Williams, Chile³ University of North Texas, Denton, TX⁴ Universidad de Magallanes, Punta Arenas, Chile, Exotic beavers increase native and exotic riparian plant richness and decrease forest regeneration in Cape Horn County, Chile.

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Poster # 105. Anderson, Laurel^*,1, Ebitz, Mikaela¹, Hanna, Alyssa¹, Schiavo, Audrey¹, ¹ Ohio Wesleyan University, Delaware, OH, Seasonal variation in photosynthetic rates for invasive Alliaria petiolata and co-occurring native herbs in a Central Ohio forest.

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Poster # 106. Eggemeyer, Kathleen^*,1, Awada, Tala ¹, Wedin, David ¹, Harvey, F. Edwin¹, Zhou, Xinhua¹, ¹ School of Natural Resources, Lincoln, NE, USA, Physiological characteristics of two native invasive trees and two dominant C4 grasses in the Nebraska Sandhills.

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Poster # 107. Castellano, Steven^*,1, Boyce, Richard¹, ¹ Northern Kentucky University, Highland Heights, KY, United States, Spatial patterns of Juniperus virginiana and Lonicera maackii on a Kentucky road cut.

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Poster # 108. Cavieres, Lohengrin ^*,1, Molina-Montenegro, Marco¹, Pauchard, Anibal¹, ¹ Universidad de Concepción, Concepción, Chile, Native nurses facilitate the invasion of an exotic plant species in the alpine zone of the Andes of central Chile.

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Poster # 109. Newman, Gregory¹, Crall, Alycia^*,1, Stohlgren, Thomas², Evangelista, Paul¹, Guenther, Debra¹, ¹ Colorado State University, Fort Collins, CO² USGS, Fort Collins, CO, Evaluating dominance as a component of non-native species invasions.

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Poster # 110. Dinkins, Meghan ¹, Louda, Svata ¹, ¹ University of Nebraska-Lincoln, School of Biological Sciences, Lincoln, NE, USA, Habitat-dependent response to simulated grazing by Canada Thistle (Cirsium arvense).

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Poster # 111. Esquejo, Ryan^*,1, Machado, Jose-Luis¹, ¹ Swarthmore College, Swarthmore, PA, Seasonal variation in the understory light availability and canopy structure of invasive Norway maple and native sugar maple and American beech.

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Poster # 112. Funk, Jennifer^*,1, ¹ Stanford University, Stanford, CA, Do invasive plant species have high resource use efficiency? Generalizations across life forms and habitats.

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Poster # 113. Gavier, Gregorio^*,1, Hoyos, Laura ^*,2, Radeloff, Volker¹, ¹ University of Wisconsin, Madison² Universidad Nacional de Córdoba, Cordoba, Argentina, Spread of an exotic tree, the glossy privet (Ligustrum lucidum), in central Argentina.

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Poster # 114. Geng, Yupeng¹, Pan, Xiaoyun¹, Xu, Chengyuan ^*,2, Zhang, Wenju¹, Li, Bo, Chen, Jiakuan, ¹ Institute of Biodiversity Science, Shanghai, P.R.China² Lamont Doherty Earth Observatory, Palisades, NY, USA, Plasticity and allometry of biomass allocation in an invasive perennial weed, Alternanthera philoxeroides: The effect of water, light and nutrient availability.

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Poster # 115. Maric, Lana^*,1, Gleeson, Scott ¹, ¹ University of Kentucky, Lexington, KY, USA, Shade tolerance in the invasive ground cover Euonymous fortunei.

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Poster # 116. Haller, Sarah^*,1, ¹ William Jewell College, Liberty, MO, USA, Reproductive biology of Lespedeza cuneata.

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Poster # 117. Haubensak, Karen¹, D'Antonio, Carla ^{1, 2}, Wixon Keller, Devin^*,1, ¹ Exotic and Invasive Weeds Research Unit, Reno, NV, USA² Environmental Studies Department, Santa Barbara, CA, USA, Variable trajectories of burned salt desert habitat in the Great Basin.

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Poster # 118. Hillstrom, Carl¹, Cipollini, Don¹, ¹ Wright State University, Dayton, OH, Plasticity traits in growth and defense expression among North American and European garlic mustard populations across moisture and nutrient gradients.

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Poster # 119. Howe, Katherine^*,1, Jacquart, Ellen ¹, ¹ The Nature Conservancy, Indianapolis, IN, Midwest Invasive Plant Network (MIPN): A new regional group for invasive plants in the Midwest.

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Poster # 120. Ishikawa, Shin-Ichi^*,1, Nakajima, Jun², Kayashima, Kazuma¹, ¹ Faculty of Social and Information Studies, Maebashi, Gunma, JAPAN² Niigata City Office, Niiata, Niigata, JAPAN, Growth and germination responses of a vigorous invasive plant, Ambrosia trifida, to some natural and man-made conditions in Japan.

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Poster # 121. Lanteigne, Melanie^*,1, Vasseur, Liette ^{1, 2}, ¹ Universite de Moncton, Moncton, New Brunswick, Canada² Laurentian University, Sudbury, Ontario, Canada, Morphological and seeds characteristics of reed canarygrass (Phalaris arundinacea).

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Poster # 122. Landenberger, Rick^*,1, McGraw, James¹, Warner, Timothy², ¹ West Virginia University, Morgantown, WV, USA² West Virginia University, Morgantown, WV, USA, Spatial patterns of female Alianthus altissima across an urban -to-rural land use gradient in the mid-Atlantic region, USA.

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Poster # 123. Abts, Anna^*,1, Lang, Kimberly^*,1, McConnaughay, Kelly¹, Morris, Sherri¹, Vaughn, Steve², ¹ Bradley University, Peoria, IL, USA² USDA, Peoria, IL, USA, Ecological Controls on the Phytochemistry of the Invasive Plant Alliaria petiolata.

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Poster # 124. DeCrappeo, Nicole^*,1, Pyke, David¹, ¹ U.S. Geological Survey, Corvallis, OR, USA, Belowground communities respond to restoration strategies in Bromus tectorum-invaded ecosystems in the northern Great Basin.

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Poster # 125. Lewis, Kevin^*,1, McCarthy, Brian¹, ¹ Ohio University, Athens, OH, Herbicide injection and control of the invasive Tree-of-heaven (Ailanthus altissima).

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Poster # 126. Magee, Teresa^*,1, Ringold, Paul², Bollman, Michael¹, Ernst, Ted¹, ¹ Dynamac Corporation, Corvallis, Oregon, USA² U.S. Environmental Protection Agency, Corvallis, Oregon, USA, An index of alien species invasiveness (IAI) for assessing vegetation condition.

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Poster # 127. McChesney, Lauren^*,1, Engelhardt, Katia¹, Bortz, Julie², ¹ University of Maryland-Center for Environmental Science, Frostburg, MD² Chesapeake Bay National Estuarine Research Reserve, Abingdon, MD, Predictions of Hydrilla verticillata coverage at Otter Point Creek (MD) using a Markov model.

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Poster # 128. Midy, Joëlle^*,1, Brisson, Jacques², ¹ Institut de recherche en biologie végétale, Montreal, Quebec, Canada² Institut de recherche en biologie végétale, Montreal, Quebec, Canada, Invasive patterns and ecosystem impacts of Norway maple (Acer platanoides L.) in a sugar maple – red oak urban forest of Eastern Canada.

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Poster # 129. Moore, Georgianne^*,1, Owens, M², Finch, Debora³, ¹ Texas A&M University, College Station, Texas² Texas Agricultural Experiment Station, Uvalde, Texas³ USFS Rocky Mountain Research Station, Albuquerque, New Mexico, Will removing Tamarix from the bosque understory result in water savings for the Rio Grande?

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Poster # 130. Morrison, Janet ^*,1, McMahon, Heather¹, ¹ The College of New Jersey, Ewing, NJ, USA, Two invaders in the same forest: comparisons of photosynthesis, herbivory, and competitive ability.

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Poster # 131. June-Wells, Mark^*,1, Northrup, Melanie¹, Romayanantakit, Apiwat¹, Holzapfel, Claus¹, ¹ Rutgers University, Newark, NJ, U.S.A., Deja-vu communities: when invaders meet again.

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Poster # 132. Parrish, Judy^{*,1, 2}, Oliver, Amanda¹, Wiedenmann, Robert², Post, Susan², Helm, Charles², Timpe, Megan^{1, 3}, ¹ Millikin University, Decatur, IL² Center for Ecological Entomology, Illinois Natural History Survey, Urbana, IL³ Illinois State University, Normal, IL, Effects of mowing on seed dispersal and patch growth of cut leafed teasel (Dipsacus laciniatus.

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Poster # 133. Rieder, Julie^*,1, Evans, Edward¹, ¹ Utah State University, Logan, Not all disturbances are created equal: the effect of disturbance on yellow starthistle (Centaurea solstitialis) establishment and performance.

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Poster # 134. Runkle, James^*,1, DiSalvo, Angie², Graham-Gibson, Yolanda¹, Dorning, Monica¹, ¹ Wright State University, Dayton, OH, USA² World Forest Institute, Portland, OR, USA, Delayed vegetation release seven years after removal of bush honeysuckle (Lonicera maackii) in southwest Ohio.

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Poster # 135. Rybczyk, John^*,1, , Donna Ball¹, , John Boe¹, ¹ Department of Environmental Science, Bellingham, WA, USA, Controlling the invasion of Spartina in the Pacific Northwest; eradication, restoration, or facilitation?

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Poster # 136. Turner, Bryan^*,1, Schulz, Kurt ¹, Jones, Cynthia^{1, 2}, Vaughan, Audrey¹, Hoover, Audra ¹, Zasada, John³, ¹ Southern Illinois University Edwardsville, Edwardsville, Illinois² URS Corporation, Portland, Oregon³ Forest Service, North Central Forest Experiment Station, Grand Rapids, Minnesota, Population size structure and spatial pattern in native (Dirca palustris)and exotic ( Lonicera maackii) forest understory shrubs.

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Poster # 137. Stinson, Kristina^*,1, Durbin, Luke^{1, 2}, Kaufmann, Sylvan³, Lowenstein, Frank⁴, ¹ Harvard Forest, Petersham, MA² Illinois Wesleyan University, Bloomington, IN³ Atkins Arboretum, Ridgely, MD⁴ The Nature Conservancy, Sheffield, MA, Responses of a New England forest community to increasing levels of invasion by garlic mustard.

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Poster # 138. Talley, Drew^{*,1, 2}, Crooks, Jeff³, Levin, Lisa⁴, Whitcraft, Christine⁴, ¹ San Francisco Bay National Estuarine Research Reserve/SFSU, San Francisco, CA² University of California Davis, Davis, CA³ Tijuana River National Estuarine Research Reserve, San Diego, CA⁴ Scripps Institution of Oceanography, La Jolla, CA, The effects of tamarisk on native floral and faunal community structure in a southern California salt marsh.

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Poster # 139. Timpe, Megan^{*,2, 3}, Parrish, Judy^{1, 2}, ² Millikin University, Decatur, IL³ Illinois State University, Normal, IL¹ Center for Ecological Entomology, Illinois Natural History Survey, Urbana, IL, Effects of mowing time and frequency on reproductive success of cut-leafed teasel, Dipsacus laciniatus.

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Poster # 140. Vasquez-Radonic, Lucero^*,1, Ostertag, Rebecca ², ¹ The University of Texas at El Paso, El Paso, Texas, USA² The University of Hawaii at Hilo, Hilo, Hawaii, USA, Understanding the interrelations of native and introduced species in the Hawaiian lowland wet forest through seed rain and soil seed bank quantification.

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Poster # 141. Wang, Xianzhong¹, ¹ Indiana University-Purdue University Indianapolis, Indianapolis, Gender-specific responses to day length in the dioecious plant Silene latifolia at different growth temperatures.

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Poster # 142. Wing, Claudia^*,1, Frohnapple, Paul^*,1, Chun, Young-Moon¹, Tseng, Charles¹, Choi, Young¹, ¹ Department of Biological Sciences, Hammond, IN, USA, Asian lineage of the new subspecies Phragmites australis subsp. americanus Saltonstall, P.M. Peterson & Streng., based on RFLP analysis of chloroplast non-coding DNA regions.

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Poster # 143. Yamashita, Naoko¹, Koike, Nobuya², Ishida, Atsushi², ¹ Forest and Forest Products Research Institute, Sapporo, Japan² Forest and Forest Products Research Institute, Tsukuba, Japan, Physiological acclimation and plasticity in invasive and native subtropical trees of different sucessional status.

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