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Past climate‐driven range shifts and population genetic diversity in arctic plants

  • Pellissier, Loïc Unit of Ecology & Evolution, University of Fribourg, Switzerland - Landscape Ecology, Institute of Terrestrial Ecosystems, ETH Zürich, Switzerland - Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
  • Eidesen, Pernille Bronken The University Centre in Svalbard, Longyearbyen, Norway
  • Ehrich, Dorothee Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT - The Arctic University of Norway, Tromsø, Norway
  • Descombes, Patrice Unit of Ecology & Evolution, University of Fribourg, Switzerland - Landscape Ecology, Institute of Terrestrial Ecosystems, ETH Zürich, Switzerland - Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
  • Schönswetter, Peter Institute of Botany, University of Innsbruck, Austria
  • Tribsch, Andreas Department of Organismic Biology, University of Salzburg, Austria
  • Westergaard, Kristine Bakke Norwegian Institute for Nature Research, Trondheim, Norway
  • Alvarez, Nadir Department of Ecology and Evolution, University of Lausanne, Switzerland
  • Guisan, Antoine Department of Ecology and Evolution, University of Lausanne, Switzerland - Institute of Earth Surface Dynamics, University of Lausanne, Switzerland
  • Zimmermann, Niklaus E. Landscape Ecology, Institute of Terrestrial Ecosystems, ETH Zürich, Switzerland - Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
  • Normand, Signe Department of Bioscience, Aarhus University, Denmark
  • Vittoz, Pascal Institute of Earth Surface Dynamics, University of Lausanne, Switzerland
  • Luoto, Miska Department of Geosciences and Geography, University of Helsinki, Finland
  • Damgaard, Christian Department of Bioscience, Aarhus University, Denmark
  • Brochmann, Christian Natural History Museum, University of Oslo, Norway
  • Wisz, Mary S. Technical University of Denmark, Charlottenlund, Denmark
  • Alsos, Inger Greve Tromsø University Museum, Tromsø, Norway
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    01.11.2015
Published in:
  • Journal of Biogeography. - 2016, vol. 43, no. 3, p. 461-470
English High intra-specific genetic diversity is necessary for species adaptation to novel environments under climate change, but species tracking suitable conditions are losing alleles through successive founder events during range shift. Here, we investigated the relationship between range shift since the Last Glacial Maximum (LGM) and extant population genetic diversity across multiple plant species to understand variability in species responses.Location: The circumpolar Arctic and northern temperate alpine ranges.Methods: We estimated the climatic niches of 30 cold-adapted plant species using range maps coupled with species distribution models and hindcasted species suitable areas to reconstructions of the mid-Holocene and LGM climates. We computed the species-specific migration distances from the species glacial refugia to their current distribution and correlated distances to extant genetic diversity in 1295 populations. Differential responses among species were related to life-history traits.Results: We found a negative association between inferred migration distances from refugia and genetic diversities in 25 species, but only 11 had statistically significant negative slopes. The relationships between inferred distance and population genetic diversity were steeper for insect-pollinated species than wind-pollinated species, but the difference among pollination system was marginally independent from phylogenetic autocorrelation.Main conclusion: The relationships between inferred migration distances and genetic diversities in 11 species, independent from current isolation, indicate that past range shifts were associated with a genetic bottleneck effect with an average of 21% loss of genetic diversity per 1000 km−1. In contrast, the absence of relationship in many species also indicates that the response is species specific and may be modulated by plant pollination strategies or result from more complex historical contingencies than those modelled here.
Faculty
Faculté des sciences et de médecine
Department
Département de Biologie
Language
  • English
Classification
Biological sciences
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/304608
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