On metapopulation resistance to drift and extinction.

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Serval ID
serval:BIB_6B865594E30A
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
On metapopulation resistance to drift and extinction.
Journal
Ecology
Author(s)
Lehmann L., Perrin N.
ISSN
0012-9658 (Print)
ISSN-L
0012-9658
Publication state
Published
Issued date
2006
Peer-reviewed
Oui
Volume
87
Number
7
Pages
1844-1855
Language
english
Abstract
The spatial configuration of metapopulations (numbers, sizes, and localization of patches) affects their ability to resist demographic extinction and genetic drift, but sometimes with opposite effects. Small and isolated patches, for instance, contribute marginally to demography but may play a large role in genetics by maintaining a sizeable amount of genetic variance among demes. In source-sink systems, similarly, connectivity may be beneficial in terms of effective size, but detrimental in terms of survival, by lowering the reproductive value of source populations. How to reconcile these opposite effects? Here we propose an analytical framework that integrates fixation time (ability to resist genetic drift) and extinction time (ability to resist demographic extinction) into a single index of resistance, measuring the ability of a metapopulation to maintain its demo-genetic integrity. We then illustrate with numerical examples how conflicting demands may be resolved.
Keywords
Biodiversity, Biological Evolution, Extinction, Biological, Models, Biological, Population Dynamics
Pubmed
Web of science
Create date
24/01/2008 17:54
Last modification date
09/11/2019 7:08
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