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Biotic constraints on the invasion of diffuse knapweed (Centaurea diffusa) in North American grasslands

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Seastedt, Timothy R, and Suding, Katharine N, Biotic constraints on the invasion of diffuse knapweed (Centaurea diffusa) in North American grasslands: .

Summary

Knapweeds (Centaurea spp.) are among the most invasive of non-indigenous plant species that have colonized western North America over the last century. We conducted a 4-year experiment in a reconstructed grassland to test hypotheses related to the ability of grasslands to resist the invasion of diffuse knapweed (C. diffusa). We experimentally invaded C. diffusa and three native species into areas where we manipulated soil nitrogen (N) and phosphorus (P) availability and removed extant grasses to reduce competition. We evaluated the growth response of these species to these resources and competitive manipulations. Of the native species that were experimentally added, only one species, Ratibida pinnata (prairie coneflower), established [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:08:31 MDT 2012

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Title Citation Biotic constraints on the invasion of diffuse knapweed (Centaurea diffusa) in North American grasslands

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