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Partitioning global patterns of freshwater fish beta diversity reveals contrasting signatures of past climate changes

Authors

  • Fabien Leprieur,

    Corresponding author
    1. UMR 5119 “Ecosystèmes Lagunaires” (CNRS-IFREMER-UM2-IRD), Université Montpellier 2, Place Eugène Bataillon, 34095 Montpellier, France
    2. UMR “Biologie des Organismes et Ecosystèmes Aquatiques” (IRD 207-CNRS 7208- MNHN-UPMC), Muséum National d’Histoire Naturelle, 43 rue Cuvier, 75005 Paris, France
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  • Pablo A. Tedesco,

    1. UMR “Biologie des Organismes et Ecosystèmes Aquatiques” (IRD 207-CNRS 7208- MNHN-UPMC), Muséum National d’Histoire Naturelle, 43 rue Cuvier, 75005 Paris, France
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  • Bernard Hugueny,

    1. UMR “Biologie des Organismes et Ecosystèmes Aquatiques” (IRD 207-CNRS 7208- MNHN-UPMC), Muséum National d’Histoire Naturelle, 43 rue Cuvier, 75005 Paris, France
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  • Olivier Beauchard,

    1. Ecosystem Management Research Group, Department of Biology, Faculty of Sciences, University of Antwerp, Universiteitsplein 1, BE-2610 Antwerpen (Wilrijk), Belgium
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  • Hans H. Dürr,

    1. Faculty of Geosciences, Utrecht University, P.O. Box 80115, 3508 TC Utrecht, The Netherlands
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  • Sébastien Brosse,

    1. Laboratoire d’Ecologie Fonctionnelle, U.M.R 5245, C.N.R.S – Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 4, France
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  • Thierry Oberdorff

    1. UMR “Biologie des Organismes et Ecosystèmes Aquatiques” (IRD 207-CNRS 7208- MNHN-UPMC), Muséum National d’Histoire Naturelle, 43 rue Cuvier, 75005 Paris, France
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E-mail: fabien.leprieur@univ-montp2.fr

Abstract

Ecology Letters (2011) 14: 325–334

Abstract

Here, we employ an additive partitioning framework to disentangle the contribution of spatial turnover and nestedness to beta diversity patterns in the global freshwater fish fauna. We find that spatial turnover and nestedness differ geographically in their contribution to freshwater fish beta diversity, a pattern that results from contrasting influences of Quaternary climate changes. Differences in fish faunas characterized by nestedness are greater in drainage basins that experienced larger amplitudes of Quaternary climate oscillations. Conversely, higher levels of spatial turnover are found in historically unglaciated drainage basins with high topographic relief, these having experienced greater Quaternary climate stability. Such an historical climate signature is not clearly detected when considering the overall level of beta diversity. Quantifying the relative roles of historical and ecological factors in explaining present-day patterns of beta diversity hence requires considering the different processes generating these patterns and not solely the overall level of beta diversity.

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