Parallel changes in genetic diversity and species diversity following a natural disturbance.

Détails

Ressource 1Télécharger: BIB_4B2FEB086B4C.P001.pdf (207.14 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_4B2FEB086B4C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Parallel changes in genetic diversity and species diversity following a natural disturbance.
Périodique
Molecular Ecology
Auteur(s)
Evanno G., Castella E., Antoine C., Paillat G., Goudet J.
ISSN
1365-294X[electronic]
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
18
Numéro
6
Pages
1137-1144
Langue
anglais
Résumé
We examined the spatial and temporal variation of species diversity and genetic diversity in a metacommunity comprising 16 species of freshwater gastropods. We monitored species abundance at five localities of the Ain river floodplain in southeastern France, over a period of four years. Using 190 AFLP loci, we monitored the genetic diversity of Radix balthica, one of the most abundant gastropod species of the metacommunity, twice during that period. An exceptionally intense drought occurred during the last two years and differentially affected the study sites. This allowed us to test the effect of natural disturbances on changes in both genetic and species diversity. Overall, local (alpha) diversity declined as reflected by lower values of gene diversity H(S) and evenness. In parallel, the among-sites (beta) diversity increased at both the genetic (F(ST)) and species (F(STC)) levels. These results suggest that disturbances can lead to similar changes in genetic and community structure through the combined effects of selective and neutral processes.
Mots-clé
Amplified Fragment Length Polymorphism Analysis, Animals, Biodiversity, Droughts, France, Gastropoda, Genetic Variation, Genetics, Population, Models, Biological, Population Dynamics, Sequence Analysis, DNA
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/02/2009 12:06
Dernière modification de la notice
08/05/2019 18:13
Données d'usage