Native turncoats and indirect facilitation of species invasions

Northfield, Tobin D., Laurance, Susan G.W., Mayfield, Margaret M., Paini, Dean R., Snyder, William E., Stouffer, Daniel B., Wright, Jeffrey T., and Lach, Lori (2018) Native turncoats and indirect facilitation of species invasions. Proceedings of the Royal Society of London Series B, Biological Sciences, 285 (1871). 20171936.

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At local scales, native species can resist invasion by feeding on and competing with would-be invasive species. However, this relationship tends to break down or reverse at larger scales. Here, we consider the role of native species as indirect facilitators of invasion and their potential role in this diversity-driven ‘invasion paradox’. We coin the term ‘native turncoats’ to describe native facilitators of non-native species and identify eight ways they may indirectly facilitate species invasion. Some are commonly documented, while others, such as indirect interactions within competitive communities, are largely undocumented in an invasion context. Therefore, we use models to evaluate the likelihood that these competitive interactions influence invasions. We find that native turncoat effects increase with the number of resources and native species. Furthermore, our findings suggest the existence, abundance and effectiveness of native turncoats in a community could greatly influence invasion success at large scales.

Item ID: 52315
Item Type: Article (Research - C1)
ISSN: 1471-2954
Funders: James Cook University (JCU)
Projects and Grants: JCU mid career researcher grant
Date Deposited: 08 Apr 2018 23:20
FoR Codes: 41 ENVIRONMENTAL SCIENCES > 4102 Ecological applications > 410202 Biosecurity science and invasive species ecology @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 40%
96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960899 Flora, Fauna and Biodiversity of Environments not elsewhere classified @ 60%
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