1. Partitioning genetic and species diversity refines our understanding of species–genetic diversity relationships
- Author
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Brett Ford, Vera W. Pfeiffer, Johann Housset, Audrey McCombs, José Luis Blanco-Pastor, Stéphanie Manel, Angéline Bertin, Nicolas Gouin, University of Wisconsin-Madison, Department of Biology, Florida Museum of Natural History, Centre d'étude de la forêt (CEF), Université de Sherbrooke (UdeS)-Université Laval [Québec] (ULaval)-McGill University = Université McGill [Montréal, Canada]-Université du Québec à Chicoutimi (UQAC)-Université de Montréal (UdeM)-Université Téluq (TELUQ)-Université du Québec en Abitibi-Témiscamingue (UQAT)-Université du Québec à Rimouski (UQAR)-Concordia University [Montreal]-Université du Québec à Montréal = University of Québec in Montréal (UQAM)-Université du Québec en Outaouais (UQO), Alcina Forets, Partenaires INRAE, Iowa State University (ISU), Unité de Recherche Pluridisciplinaire Prairies et Plantes Fourragères (P3F), Institut National de la Recherche Agronomique (INRA), Centro de Estudios Avanzados en Zonas Aridas (CEAZA), Universidad de La Serena (USERENA), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Université de Sherbrooke (UdeS)-Université du Québec à Montréal = University of Québec in Montréal (UQAM)-Université du Québec à Chicoutimi (UQAC)-Université Laval [Québec] (ULaval)-Université Téluq (TELUQ)-Université de Montréal (UdeM)-Université du Québec en Outaouais (UQO)-Concordia University [Montreal]-McGill University = Université McGill [Montréal, Canada]-Université du Québec en Abitibi-Témiscamingue (UQAT)-Université du Québec à Rimouski (UQAR), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud])
- Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences ,genetic outlier ,0106 biological sciences ,0301 basic medicine ,media_common.quotation_subject ,SNP ,Biology ,010603 evolutionary biology ,01 natural sciences ,species–genetic diversity correlation ,03 medical and health sciences ,Genetic variation ,high Andean wetlands ,species-genetic diversity correlation ,Ecology, Evolution, Behavior and Systematics ,Selection (genetic algorithm) ,Original Research ,Nature and Landscape Conservation ,media_common ,Genetic diversity ,Ecology ,Species diversity ,respiratory system ,15. Life on land ,Agricultural sciences ,030104 developmental biology ,diversité spécifique ,Evolutionary biology ,diversité génétique ,Species evenness ,Amplified fragment length polymorphism ,Species richness ,human activities ,Sciences agricoles ,corrélation ,Diversity (politics) - Abstract
International audience; Disentangling the origin of species-genetic diversity correlations (SGDCs) is a challenging task that provides insight into the way that neutral and adaptive processes influence diversity at multiple levels. Genetic and species diversity are comprised by components that respond differently to the same ecological processes. Thus, it can be useful to partition species and genetic diversity into their different components to infer the mechanisms behind SGDCs. In this study, we applied such an approach using a high-elevation Andean wetland system, where previous evidence identified neutral processes as major determinants of the strong and positive covariation between plant species richness and AFLP genetic diversity of the common sedge Carex gayana. To tease apart putative neutral and non-neutral genetic variation of C. gayana, we identified loci putatively under selection from a dataset of 1,709 SNPs produced using restriction site-associated DNA sequencing (RAD-seq). Significant and positive relationships between local estimates of genetic and species diversities (alpha-SGDCs) were only found with the putatively neutral loci datasets and with species richness, confirming that neutral processes were primarily driving the correlations and that the involved processes differentially influenced local species diversity components (i.e., richness and evenness). In contrast, SGDCs based on genetic and community dissimilarities (beta-SGDCs) were only significant with the putative non-neutral datasets. This suggests that selective processes influencing C. gayana genetic diversity were involved in the detected correlations. Together, our results demonstrate that analyzing distinct components of genetic and species diversity simultaneously is useful to determine the mechanisms behind species-genetic diversity relationships.
- Published
- 2018