On metapopulation resistance to drift and extinction.

Détails

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Etat: Public
Version: de l'auteur⸱e
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ID Serval
serval:BIB_6B865594E30A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
On metapopulation resistance to drift and extinction.
Périodique
Ecology
Auteur⸱e⸱s
Lehmann L., Perrin N.
ISSN
0012-9658 (Print)
ISSN-L
0012-9658
Statut éditorial
Publié
Date de publication
2006
Peer-reviewed
Oui
Volume
87
Numéro
7
Pages
1844-1855
Langue
anglais
Résumé
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.
Mots-clé
Biodiversity, Biological Evolution, Extinction, Biological, Models, Biological, Population Dynamics
Pubmed
Web of science
Création de la notice
24/01/2008 17:54
Dernière modification de la notice
09/11/2019 7:08
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