[UNKNOWN: PRESTIME] KAPLAN, IAN^*,1, EUBANKS, MICKY¹, ¹ Auburn University, Auburn, AL. Keystone mutualisms and the ecological consequences of manipulation: cascading effects of an ant-aphid interaction.

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[UNKNOWN: PRESTIME] GRUNER, DANIEL^*,1, ¹ Univerity of Hawaii at Manoa:, Honolulu, HI. Top-down and bottom-up influences in a Hawaiian arboreal arthropod food web.

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[UNKNOWN: PRESTIME] Suttle, Blake^*,1, Sapp, Joseph¹, Power, Mary¹, ¹ University of California, Berkeley, Berkeley, CA. Resource limitation in a generalist grasshopper: the importance of resource abundance and diversity .

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[UNKNOWN: PRESTIME] Finke, Deborah^*,1, Denno, Robert¹, ¹ University of Maryland, College Park, Maryland. Vegetation complexity enhances multiple-predator impact on herbivore populations: An examination of behavioral mechanisms.

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[UNKNOWN: PRESTIME] PAULSEN, M.^*,1, Pilson, Diana¹, ¹ University of Nebraska- Lincoln, Lincoln, NE. Interspecific competition and herbivorous insects: The importance of competition in the seed-feeding guild of wild sunflower.

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[UNKNOWN: PRESTIME] Miller, Maisie^*,1, Denno, Robert¹, Dively, Galen¹, ¹ University of Maryland, College Park, Maryland. Interspecific competition via induced resistance between Potato Leafhopper and Colorado Potato Beetle.

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[UNKNOWN: PRESTIME] . Break.

[UNKNOWN: PRESTIME] Wearing, Helen^*,1, Rohani, Pejman¹, Sait, Steven², Cameron, Tom², ¹ University of Georgia, Athens, Georgia² University of Liverpool, Liverpool, U.K.. Coexistence of competing insect populations via interaction with natural enemies.

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[UNKNOWN: PRESTIME] Collier, Timothy^*,1, Briggs, Cheryl², Messing, Russell³, ¹ University of California, Berkeley, Berkeley, CA² University of California, Berkeley, Berkeley, CA³ University of Hawaii, Kapaa, HI. Intraspecific interference competition in a parasitoid of fruit fly pests.

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[UNKNOWN: PRESTIME] Hall, Carmen^1,2, Jones, Leslie¹, Lund, JoAnne^1,3, Russell, James¹, Reynolds, Richard^1,4, Egan, Scott¹, Ott, James^*,1, ¹ Southwest Texas State University, San Marcos, Texas² University of Georgia, Athens, Georgia³ USDA-Forest Service, Rhinelander, Wisconsin⁴ University of Maryland, College Park, Maryland. Parasitoid community structure, interactions, and impacts on alternate generations of a host-specific gall former.

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[UNKNOWN: PRESTIME] BORER, ELIZABETH^*,1, MURDOCH, WILLIAM¹, SWARBRICK, SUSAN¹, ¹ University of California, Santa Barbara, CA. Spatial vs. non-spatial mechanisms of parasitoid coexistence: Experimentally linking field pattern and mechanism.

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[UNKNOWN: PRESTIME] Sait, Steven^*,1, ¹ University of Liverpool, Liverpool, UK. The ecology of competition between pathogens and parasitoids in co-infected insects.

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[UNKNOWN: PRESTIME] GIBB, HELOISE^*,1, HOCHULI, DIETER, ¹ The University of Sydney, Sydney, NSW, Australia. Effects of a dominant ant, Iridomyrmex purpureus, on ant assemblages on rock outcrops.

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