Poster # 94. Lankau, Richard^*,1, Siemann, Evan¹, Rogers, William¹, ¹ Rice University, Houston Effects of light and flooding on the invasion of Sapium sebiferum into coastal prairies.

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Poster # 95. Pauchard, Anibal^*,1,2, Alaback, Paul¹, Edlund, Eric¹, ¹ University of Montana, Missoula, Montana² pauchard@forestry.umt.edu Monitoring plant invasions in protected areas: Why is it important to look at multiple scales? Linaria vulgaris in West Yellowstone.

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Poster # 96. Trainor, Meghan^*,1, Maxwell, Bruce¹, Markin, George², ¹ Montana State University, Bozeman, MT² USDA Forestry Sciences Lab, Bozeman, MT Variability in tansy ragwort (Senecio jacobaea) population dynamics in a range of environments.

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Poster # 97. Sutherland, Steve^*,1, ¹ Fire Sciences Laboratory, Missoula, MT Post-fire weed response in western Montana.

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Poster # 98. Karnes, Heather^*,1, Travagline, Cheryl¹, Vitkay, Karen¹, Peterson, Andrew¹, ¹ Columbia University, Oracle, Arizona Interactions among an invasive grass, woody legumes and elevation in a semiarid grassland.

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Poster # 99. Smith, Melinda^*,1, Wilcox, Julia¹, Kelly, Theresa¹, Knapp, Alan¹, ¹ Division of Biology, Manhattan, Kansas Effects of dominance and diversity on invasibility of a C₄-dominated grassland.

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Poster # 100. Gabbard, Bethany^*,1, Fowler, Norma¹, ¹ University of Texas - Austin, Austin, Texas Current habitat occupation by an invasive grass: few apparent limits to future abundance.

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Poster # 101. Musser, Amanda^*,1,2, Parrish, Judith^*,1,2, ¹ Millikin University, Decatur, IL² Center for Economic Entomology, Illinois Natural History Survey, Urbana, IL Differences in Dipsacus laciniatus seed dispersal along an interstate corridor versus a state natural area.

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Poster # 102. Dobrowolski, Wendy^*,1,2, Ungar, Irwin¹, McCarthy, Brian¹, ¹ Department of Environmental and Plant Biology, Athens, OH² USDA Forest Service, Riverside, CA Inhibition of old-field species by Lespedeza cuneata (Fabaceae).

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Poster # 103. ENGLE, DAVID^*,1, TUNNELL, SUSAN¹, MAYER, PAUL², JORGENSEN, ERIC², ¹ Oklahoma State University, Stillwater, OK² US Environmental Protection Agency, Ada, OK Old field successional dynamics following intense herbivory.

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Poster # 104. Eckberg, James^*,1, Graeve, Phillip^*,1, Paulson, Monica^*,1, Kittelson, Pamela¹, ¹ Gustavus Adolphus College, St. Peter, MN Effects of mowing and supplemental nitrogen additions on two invasive sweet clovers, Melilotus alba and M. officinalis.

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Poster # 105. Symstad, Amy^*,1, Temmen, Laurel², ¹ Illinois Natural History Survey, Savanna, Illinois² Southern Illinois University-Edwardsville, Edwardsville, Illinois Crown vetch: Does one invasive species help others?

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