Running off the road: roadside non-native plants invading mountain vegetation

Details

Serval ID
serval:BIB_C79C2BFE0599
Type
Article: article from journal or magazin.
Collection
Publications
Title
Running off the road: roadside non-native plants invading mountain vegetation
Journal
Biological Invasions
Author(s)
McDougall Keith L., Lembrechts Jonas, Rew Lisa J., Haider Sylvia, Cavieres Lohengrin A., Kueffer Christoph, Milbau Ann, Naylor Bridgett J., Nuñez Martin A., Pauchard Anibal, Seipel Tim, Speziale Karina L., Wright Genevieve T., Alexander Jake M.
ISSN
1573-1464
ISSN-L
1387-3547
Publication state
Published
Issued date
2018
Peer-reviewed
Oui
Volume
20
Number
12
Pages
3461-3473
Language
english
Abstract
Prevention is regarded as a cost-effective management action to avoid unwanted impacts of non-native species. However, targeted prevention can be difficult if little is known about the traits of successfully invading non-native species or habitat characteristics that make native vegetation more resistant to invasion. Here, we surveyed mountain roads in seven regions worldwide, to investigate whether different species traits are beneficial during primary invasion (i.e. spread of non-native species along roadside dispersal corridors) and secondary invasion (i.e. percolation from roadsides into natural adjacent vegetation), and to determine if particular habitat characteristics increase biotic resistance to invasion. We found primary invasion up mountain roads tends to be by longer lived, non-ruderal species without seed dispersal traits. For secondary invasion, we demonstrate that both traits of the non-native species and attributes of the receiving natural vegetation contribute to the extent of invasion. Non-native species that invade natural adjacent vegetation tend to be shade and moisture tolerant. Furthermore, non-native species invasion was greater when the receiving vegetation was similarly rich in native species. Our results show how mountain roads define which non-native species are successful; first by favouring certain traits in mountain roadsides (the key dispersal pathway to the top), and secondly by requiring a different set of traits when species invade the natural adjacent vegetation. While patterns in species traits were observed at a global level, regional abiotic and biotic variables largely generated region-specific levels of response, suggesting that management should be regionally driven.
Keywords
Biotic resistance, Elevation gradient, Management, Primary invasion, Secondary invasion, Traits
Web of science
Create date
11/02/2019 9:33
Last modification date
12/02/2019 7:26
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