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Title:A Community's Natural Resistance to Invasion by Cheatgrass and the Effects of Associational Herbivory
Author(s):Beckstead, Julie
Doctoral Committee Chair(s):Augspurger, Carol K.
Department / Program:Plant Biology
Discipline:Plant Biology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Biology, Ecology
Abstract:Linking theories of invasion biology with that of associational herbivory, I found that (1) cheatgrass was a highly utilized food source for generalist grasshoppers, (2) among native plant species, the amount of herbivory corresponded with their total percent nitrogen and other plant traits, and (3) a native grass, Elymus elymoides, experienced higher herbivory in high- than in low-density cheatgrass patches, supporting the attractant-source hypothesis that predicts associational susceptibility. Through indirect effects, invading species may generate important shifts in herbivory on native species.
Issue Date:2001
Description:126 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.
Other Identifier(s):(MiAaPQ)AAI3023017
Date Available in IDEALS:2015-09-28
Date Deposited:2001

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