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How do genetic correlations affect species range shifts in a changing environment?

Authors

  • Anne Duputié,

    1. Centre d’Écologie Fonctionnelle et Évolutive – UMR 5175, campus CNRS, 1919, route de Mende, 34293 Montpellier Cedex 5, France
    2. Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
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  • François Massol,

    1. Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
    2. CEMAGREF – UR HYAX, 3275, route de Cézanne – Le Tholonet, CS 40061, 13182 Aix-en-Provence Cedex 5, France
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  • Isabelle Chuine,

    1. Centre d’Écologie Fonctionnelle et Évolutive – UMR 5175, campus CNRS, 1919, route de Mende, 34293 Montpellier Cedex 5, France
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  • Mark Kirkpatrick,

    1. Section of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA
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  • Ophélie Ronce

    1. Institut des Sciences de l’Evolution (UM2-CNRS), Université Montpellier 2, Montpellier, France
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E-mail: anne.duputie@ens-lyon.org

Abstract

Ecology Letters (2012)

Abstract

Species may be able to respond to changing environments by a combination of adaptation and migration. We study how adaptation affects range shifts when it involves multiple quantitative traits evolving in response to local selection pressures and gene flow. All traits develop clines shifting in space, some of which may be in a direction opposite to univariate predictions, and the species tracks its environmental optimum with a constant lag. We provide analytical expressions for the local density and average trait values. A species can sustain faster environmental shifts, develop a wider range and greater local adaptation when spatial environmental variation is low (generating low migration load) and multitrait adaptive potential is high. These conditions are favoured when nonlinear (stabilising) selection is weak in the phenotypic direction of the change in optimum, and genetic variation is high in the phenotypic direction of the selection gradient.

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