Phylogenetic plant community structure along elevation is lineage specific

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_38D3F678A0B2
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Phylogenetic plant community structure along elevation is lineage specific
Périodique
Ecology and Evolution
Auteur(s)
Ndiribe C., Pellissier L., Antonelli S., Dubuis A., Pottier J., Vittoz P., Guisan A., Salamin N.
ISSN
2045-7758
Statut éditorial
Publié
Date de publication
2013
Peer-reviewed
Oui
Volume
3
Numéro
15
Pages
4925-4939
Langue
anglais
Résumé
The trend of closely related taxa to retain similar environmental preferences mediated by inherited traits suggests that several patterns observed at the community scale originate from longer evolutionary processes. While the effects of phylogenetic relatedness have been previously studied within a single genus or family, lineage-specific effects on the ecological processes governing community assembly have rarely been studied for entire communities or flora. Here, we measured how community phylogenetic structure varies across a wide elevation gradient for plant lineages represented by thirty-five families, using a co-occurrence index and net relatedness index (NRI). We propose a framework that analyses each lineage separately and reveals the trend of ecological assembly at tree nodes. We found prevailing phylogenetic clustering for more ancient nodes and overdispersion in more recent tree nodes. Closely related species may thus rapidly evolve new environmental tolerances to radiate into distinct communities, while older lineages likely retain inherent environmental tolerances to occupy communities in similar environments, either through efficient dispersal mechanisms or the exclusion of older lineages with more divergent environmental tolerances. Our study illustrates the importance of disentangling the patterns of community assembly among lineages to better interpret the ecological role of traits. It also sheds light on studies reporting absence of phylogenetic signal, and opens new perspectives on the analysis of niche and trait conservatism across lineages.
Mots-clé
Community structure, elevation gradient, mountain plants, phylogenetic clustering, phylogenetic overdispersion
Web of science
Open Access
Oui
Création de la notice
21/09/2013 0:47
Dernière modification de la notice
20/08/2019 14:28
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