8:00 AM Stohlgren, Thomas^*,1, Barnett, David ², Flather, Curtis³, Fuller, Pam⁴, Kartesz, John ⁵, ¹ USGS Fort Collins Science Center, Fort Collins, CO² Natural Resource Ecology Lab, Fort Collins, CO³ USDA Forest Service, Fort Collins, CO⁴ USGS Caribbean Science Center, Gainesville, FL⁵ Biota of North America Program, Chapel Hill, NC Species diversity and the patterns of invasion of multiple biological groups in the United States.

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8:15 AM Colautti, Robert, Grigorovich, Igor, MacIsaac, Hugh, What determines invasion success?

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8:30 AM Marrs, Robin^*,1, Hufbauer, Ruth ¹, Pal Bais, Harsh¹, Vivanco, Jorge¹, ¹ Colorado State University, Fort Collins, CO, USA Effects of hybridization on allelochemical expression in invasive Centaurea.

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8:45 AM Kulmatiski, Andrew^*,1, Beard, Karen¹, Stark, John¹, ¹ Utah State University, Logan, Utah Plants, soils, and alternative steady states in plant communities.

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9:00 AM Lewis, Kristin^*,1, Bazzaz, Fakhri¹, ¹ Harvard University, Cambridge, MA Evolution of defense chemistry in Alliaria petiolata since introduction into North America.

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9:15 AM Thomsen, Meredith^*,1, Suttle, Blake¹, ¹ University of California, Berkeley, Berkeley, CA Importance of propagule supply and ecological resistance in determining invasion success.

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9:30 AM Break.

9:45 AM Leung, Brian^*,1, Drake, John¹, Lodge, David¹, ¹ Dept. Biol., Univ Notre Dame, Notre Dame, IN, USA Predicting invasions: Propagule pressure and the gravity of the Allee effect.

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10:00 AM Davies, Kendi^*,1, Chesson, Peter², Harrison, Susan¹, Inouye, Brian^{1, 3}, ¹ Department of Environmental Science and Policy, Davis, CA² Section of Evolution and Ecology, Davis, CA³ Department of Biological Science, Tallahassee, FL Scale matters: How spatial scale alters the diversity-invasibility relationship.

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10:15 AM Brown, Rebecca^*,1, Fridley, Jason², Bruno, John², ¹ The Academy of Natural Sciences, Philadelphia, PA² University of North Carolina, Chapel Hill, NC Null models and observed patterns of native and exotic diversity: Does native richness repel invasion?

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10:30 AM Minton, Mark^*,1, Mack, Richard¹, ¹ Washington State University, Pullman, Washington, USA Cultivation counters the long-odds on plant naturalizations by mitigating environmental stochasticity.

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10:45 AM Ashton, Isabel^*,1, Lerdau, Manuel ¹, ¹ Stony Brook University, Stony Brook, NY Exotics do NOT always invade: Mechanisms underlying the success and failure of vine invasions.

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11:00 AM Seabloom, Eric ^*,1, Dobson, Andy ², Stoms, David³, ¹ National Center for Ecological Analysis and Synthesis, Santa Barbara, CA² Department of Ecology and Evolutionary Biology, Princeton, NJ³ Institute for Computational Earth System Science, Santa Barbara, CA Abiotic and biotic constraints on invasions: Vascular plants in California.

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11:15 AM Simonson, Sara^*,1, Barnett, David¹, Stohlgren, Thomas^{1, 2}, Ielmini, Michael ³, ¹ Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO² Fort Collins Science Center, U.S. Geological Survey, Fort Collins, CO³ National Wildlife Refuge System, U.S. Fish and Wildlife Service, Arlington, VA Invasion of the National Wildlife Refuges.

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