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Secondary invasion following the reduction of Coronilla varia (Crownvetch) in sand prairie

American Midland Naturalist

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Abstract

I investigated the effect of Coronilla varia invasion and subsequent reduction on the plant community and soil nitrogen availability in a degraded Illinois sand prairie. The presence of C. varia significantly increased soil nitrogen availability and significantly decreased native species richness and cover, but neither helped nor hindered a common non-native grass, Poa pratensis. One year after the drastic reduction of C. varia, soil nitrogen remained somewhat elevated and native species richness and cover low, but P. pratensis cover increased nearly six-fold. These results suggest that C. varia's impact might be continued through altered soil nitrogen. More important, however, was the strong response of P. pratensis, which could hinder restoration efforts by competing with native species.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Secondary invasion following the reduction of Coronilla varia (Crownvetch) in sand prairie
Series title:
American Midland Naturalist
Volume
152
Issue:
1
Year Published:
2004
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
183
Last page:
189
Number of Pages:
7