Scale invariance in the spatial-dynamics of biological invasions

Details

Serval ID
serval:BIB_4277B823C390
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Scale invariance in the spatial-dynamics of biological invasions
Journal
NeoBiota
Author(s)
Liebhold Andrew M., Keitt Timothy H., Goel Nikunj, Bertelsmeier Cleo
Publication state
Published
Issued date
30/09/2020
Peer-reviewed
Oui
Volume
62
Number
00
Pages
269-277
Language
english
Abstract
Despite the enormous negative consequences of biological invasions, we have a limited understanding of how spatial demography during invasions creates population patterns observed at different spatial scales. Early stages of invasions, arrival and establishment, are considered distinct from the later stage of spread, but the processes of population growth and dispersal underlie all invasion phases. Here, we argue that the spread of invading species, to a first approximation, exhibits scale invariant spatial-dynamic patterns that transcend multiple spatial scales. Dispersal from a source population creates smaller satellite colonies, which in turn act as sources for secondary invasions; the scale invariant pattern of coalescing colonies can be seen at multiple scales. This self-similar pattern is referred to as “stratified diffusion” at landscape scales and the “bridgehead effect” at the global scale. The extent to which invasions exhibit such scale-invariant spatial dynamics may be limited by the form of the organisms’ dispersal kernel and by the connectivity of the habitat. Recognition of this self-similar pattern suggests that certain concepts for understanding and managing invasions might be widely transferable across spatial scales.
Keywords
invasions, scale invariance, bridgehead effects, stratified diffusion
Create date
04/09/2020 19:09
Last modification date
18/10/2020 5:24
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