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Habitat Shape, Species Invasions, and Reserve Design: Insights from Simple Models

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dc.contributor.author Cumming, Graeme S. en_US
dc.date.accessioned 2009-07-31T14:50:45Z
dc.date.available 2009-07-31T14:50:45Z
dc.date.issued 2002 en_US
dc.date.submitted 2008-09-16 en_US
dc.date.submitted 2008-09-16 en_US
dc.identifier.uri https://hdl.handle.net/10535/2506
dc.description.abstract "Species invasions have become a major threat to global biodiversity. We currently lack a general theory of species invasions that allows us to make useful predictions about when and where invasions will occur, whether they will be successful, and whether they will alter ecosystem function in invaded habitats. One line of inquiry in developing such a theory is to focus on the characteristics of successful invaders. A second, complementary approach is to examine habitats of interest more closely and ask how the properties of the habitat that is being invaded affect the likelihood of invasion success. In this paper, I consider the importance of habitat shape (also termed 'habitat topology' or 'habitat geometry') as a variable affecting the dispersal and abundance of invasive populations. I use two well-established simulation modeling approaches, namely, a cellular automaton model and a reaction-diffusion model, to mimic species invasions in hypothetical habitats that cover a range of linear, branching, rectangular, and square shapes. The results suggest that invasions in more geometrically complex habitats will occur faster and may ultimately produce a higher abundance of the invasive species. Differences in invasion rates are not a simple consequence of differences in overall connectivity, as shown by a comparison of habitats with identical connectivities but different spatial arrangements of cells. Ultimately, if combined with other modeling approaches, these methods may be useful in generating recommendations for managers about the vulnerability of particular habitats and reserve networks to invasion." en_US
dc.subject landscape change en_US
dc.subject ecology en_US
dc.subject modeling en_US
dc.subject biodiversity en_US
dc.title Habitat Shape, Species Invasions, and Reserve Design: Insights from Simple Models en_US
dc.type Journal Article en_US
dc.type.published published en_US
dc.subject.sector General & Multiple Resources en_US
dc.identifier.citationjournal Ecology and Society en_US
dc.identifier.citationvolume 6 en_US
dc.identifier.citationnumber 1 en_US
dc.identifier.citationmonth June en_US

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