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History or ecology? Substrate type as a major driver of patial genetic structure in Alpine plants

Auteur(s)
Alvarez, Nadir
Thiel-Egenter, Conny
Tribsch, Andreas
Holderegger, Rolf
Manel, Stéphanie
Schönswetter, Peter
Taberlet, Pierre
Brodbeck, Sabine
Gaudeul, Myriam
Gielly, Ludovic
Küpfer, Philippe 
Institut de biologie 
Mansion, Guilhem
Negrini, Riccardo
Paun, Ovidiu
Pellecchia, Marco
Rioux, Delphine
Schüpfer, Fanny
Van Loo, Marcela
Winkler, Manuela
Gugerli, Felix
IntraBioDiv Consortium
Date de parution
2009
In
Ecology Letters, Blackwell, 2009/12/7/632-640
Mots-clés
  • Alps
  • amplified fragment length polymorphisms
  • comparative phylogeography
  • ecological requirements
  • genetic structure
  • geology
  • glacial refugia
  • recolonization pathways
  • soil reaction
  • Alps

  • amplified fragment le...

  • comparative phylogeog...

  • ecological requiremen...

  • genetic structure

  • geology

  • glacial refugia

  • recolonization pathwa...

  • soil reaction

Résumé
Climatic history and ecology are considered the most important factors moulding the spatial pattern of genetic diversity. With the advent of molecular markers, species' historical fates have been widely explored. However, it has remained speculative what role ecological factors have played in shaping spatial genetic structures within species. With an unprecedented, dense large-scale sampling and genome-screening, we tested how ecological factors have influenced the spatial genetic structures in Alpine plants. Here, we show that species growing on similar substrate types, largely determined by the nature of bedrock, displayed highly congruent spatial genetic structures. As the heterogeneous and disjunctive distribution of bedrock types in the Alps, decisive for refugial survival during the ice ages, is temporally stable, concerted post-glacial migration routes emerged. Our multispecies study demonstrates the relevance of particular ecological factors in shaping genetic patterns, which should be considered when modelling species projective distributions under climate change scenarios.
Identifiants
https://libra.unine.ch/handle/123456789/15238
_
10.1111/j.1461-0248.2009.01312.x
Type de publication
journal article
Dossier(s) à télécharger
 main article: Alvarez_Nadir_-_History_or_ecology_Substrate_type_20090619.pdf (548.92 KB)
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