Poster # 241. Rice, Kevin¹, Eubanks, Micky¹, ¹ Auburn University, Auburn, Alabama, Direct benefits of ant-aphid mutualisms: fire ants increase the survival of aphids in the absence of natural enemies and honeydew influences colony survival and growth.

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Poster # 242. Freund, Deborah¹, Miller, Kathye¹, Lee, Tali¹, Weiher, Evan¹, ¹ University of Wisconsin-Eau Claire, Eau Claire, WI, USA, Hierarchies of plant-plant and plant-fungal interaction strengths with varied resource ratios.

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Poster # 243. Harmon-Threatt, Alexandra^*,1, Knight, Tiffany ¹, ¹ Washington University in St. Louis, St. Louis, MO, Are non-native species more pollen limited than native species?

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Poster # 245. Landis, Frank^*,1, Fraser, Lauchlan², ¹ Biology Department, Akron, OH, USA² Faculty of Science, Kamloops, BC, Canada, Modeling interactions between plants and arbuscular mycorrhizal fungi, with nutrient cycling and senescence.

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Poster # 246. McGuire, Krista¹, Zak, Donald¹, ¹ University of Michigan, Ann Arbor, MI, USA, Dynamics and competitive interactions: The role of ectomycorrhizal associations in tropical monodominance: Can ectomycorrhizal fungi suppress saprotrophic fungi?

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Poster # 247. Malcolm, Glenna¹, López-Gutiérrez, Juan¹, Koide, Roger¹, Eissenstat, David ¹, ¹ Pennsylvania State University, State College, PA, Temperature acclimation by ectomycorrhizal fungi.

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Poster # 248. Markham, John¹, ¹ Botany Department, Winnipeg, MB, Canada, Negative effects of soil biota on Andropogon gerardii.

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Poster # 249. Omacini, Marina ¹, Chaneton, Enrique ¹, Ghersa, Claudio ¹, bush, Lowell², ¹ IFEVA/CONICET and Facultad de Agronomía, Ciudad de Buenos Aires, Argentina² University of Kentucky, Lexington, Kentucky, USA, Fungal endophytes affect seedling recruitment of an invasive annual grass.

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Poster # 250. Reblin, Jaret^*,1, Logan, Barry¹, Tissue, David ², ¹ Bowdoin College, Brunswick, Maine, USA² Texas Tech University, Lubbock, Texas, USA, Impact of eastern dwarf mistletoe infection (Arceuthobium pusillum) on the needles of red (Picea rubens) and white spruce (P. glauca): Photosynthesis, biochemistry and morphology.

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