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Spread of the exotic croftonweed (Eupatorium adenophorum) across southwest China along roads and streams

Published online by Cambridge University Press:  20 January 2017

Zhijun Lu  and
Keping Ma
Zhijun Lu
Affiliation:
Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Haidian District, Beijing 100093, China; Department of Biology, University of Memphis, Memphis, TN 38152
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Abstract

Roads and streams are important conduits for the spread of invasive species, and croftonweed is an invasive plant in southwest China. We established six transects along one road and stream in Huili County, Sichuan Province to determine the pattern of invasion and identify major factors potentially influencing it. Results demonstrated that the invasion (cover, abundance, and number of clusters) of croftonweed declined significantly with distance from the road and stream. However, after compensation for environmental factors, only distance from the road was significantly negatively related to number of clusters of this plant. Instead, native plant species cover and richness were significantly negatively associated with croftonweed invasion along the road; elevation and native species cover were negatively correlated with the invasion along the stream. These findings indicated that roads and streams were main conduits for the spread of croftonweed in southwest China, and reduced native species cover could facilitate invasion by croftonweed in habitats along roads and streams.

Keywords

Croftonweed, Eupatorium adenophorum Sprengel EUPADCommunity invasibilitydisturbanceinvasive specieslight availabilityroad ecological effects
Type
Research Article
Information
Weed Science , Volume 54 , Issue 6 , December 2006 , pp. 1068 - 1072
Copyright
Copyright © Weed Science Society of America 

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