| Autor: |
De Kort H; Plant Conservation and Population Biology, Department of Biology, University of Leuven, Heverlee, Belgium. hanne.dekort@kuleuven.be., Prunier JG; Centre National de la Recherche Scientifique, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France., Ducatez S; Department of Earth Sciences, University of Cambridge, Cambridge, UK., Honnay O; Plant Conservation and Population Biology, Department of Biology, University of Leuven, Heverlee, Belgium., Baguette M; Centre National de la Recherche Scientifique, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France.; Institut Systématique, Evolution, Biodiversité (ISYEB), UMR 7205 Museum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France., Stevens VM; Centre National de la Recherche Scientifique, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France., Blanchet S; Centre National de la Recherche Scientifique, SETE Station d'Ecologie Théorique et Expérimentale, UMR 5321, Moulis, France. |
| Abstrakt: |
Understanding how biological and environmental factors interactively shape the global distribution of plant and animal genetic diversity is fundamental to biodiversity conservation. Genetic diversity measured in local populations (GD P ) is correspondingly assumed representative for population fitness and eco-evolutionary dynamics. For 8356 populations across the globe, we report that plants systematically display much lower GD P than animals, and that life history traits shape GD P patterns both directly (animal longevity and size), and indirectly by mediating core-periphery patterns (animal fecundity and plant dispersal). Particularly in some plant groups, peripheral populations can sustain similar GD P as core populations, emphasizing their potential conservation value. We further find surprisingly weak support for general latitudinal GD P trends. Finally, contemporary rather than past climate contributes to the spatial distribution of GD P , suggesting that contemporary environmental changes affect global patterns of GD P . Our findings generate new perspectives for the conservation of genetic resources at worldwide and taxonomic-wide scales. |
