Poster # 66. Dodge, Gary^*,1,2, Louda, Svata³, ¹ University of Maryland, College Park, Maryland² Rocky Mountain Biological Laboratory, Crested Butte, CO³ University of Nebraska, Lincoln, NE Native floral guild penetration by two introduced weevils, Larinus planus and Rhinocyllus conicus.

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Poster # 67. Forys, Elizabeth^*,1, Allen, Craig², Wojcik, Daniel³, ¹ Environmental Studies, Saint Petersburg, FL² U.S. Geological Survey, Biological Resources Division, Clemson, SC³ United States Department of Agriculture, Gainesville, FL Non-indigenous ants in the Florida Keys.

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Poster # 68. Juliano, Steven^*,1, ¹ Illinois State University, Normal, IL, 61790-4120 Invasion ecology of Asian tiger mosquito: Egg mortality alters the outcome of competition among larvae.

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Poster # 69. CHAPUT, EMMA^*,1, BANCROFT, JAY¹, SMITH, MICHEAL², ¹ Delaware Fish and Wildlife, Little Creek, DE² USDA, Newark, DE Dispersal of the Asian longhorned beetle and distribution of at-risk trees in New York.

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Poster # 70. Friedman, Jonathan^*,1, Auble, Gregor¹, Scott, Michael¹, Shafroth, Patrick¹, Merigliano, Michael², Freehling, Michael³, Anderson, Peggy⁴, Griffin, Eleanor⁵, ¹ U.S. Geological Survey, Fort Collins, CO² University of Montana, Missoula, MT³ Colorado State University, Fort Collins, CO⁴ Johnson Controls World Services, Inc., Fort Collins, CO⁵ U.S. Geological Survey, Boulder, CO Environmental influences on exotic tree invasion in riparian ecosystems of the western United States.

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Poster # 71. STARK, SCOTT^*,1, BUNKER, DANIEL¹, CARSON, WALTER¹, ¹ University of Pittsburgh, Pittsburgh, PA Consequences of purple loosestrife (Lythrum salicaria) invasion for marsh vegetation in Northwestern Pennsylvania.

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Poster # 72. Hager, Heather^*,1, ¹ University of Regina, Regina, SK, Canada Absolute versus per-gram effects of purple loosestrife (Lythrum salicaria) on native wetland seedling growth and competition.

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Poster # 73. TAYLOR, CAZ^*,1,2, DAVIS, HEATHER^2,3, CIVILLE, JANIE³, ¹ Department of Environmental Science and Policy, Davis, CA² Center for Population Biology, Davis, CA³ Section of Evolution and Ecology, Davis, CA Consequences of an Allee effect on the invasion of Spartina alterniflora in Willapa Bay, WA.

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