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Topography drives microgeographic adaptations of closely related species in two tropical tree species complexes

hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorSCHMITT, Sylvain
hal.structure.identifierEcologie des forêts de Guyane [UMR ECOFOG]
dc.contributor.authorTYSKLIND, Niklas
hal.structure.identifierForêts et Sociétés [UPR Forêts et Sociétés]
hal.structure.identifierDépartement Environnements et Sociétés [Cirad-ES]
dc.contributor.authorHÉRAULT, Bruno
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorHEUERTZ, Myriam
dc.date.issued2021
dc.identifier.issn0962-1083
dc.description.abstractEnClosely related tree species that grow in sympatry are abundant in rainforests. However, little is known of the ecoevolutionary processes that govern their niches and local coexistence. We assessed genetic species delimitation in closely related sympatric species belonging to two Neotropical tree species complexes and investigated their genomic adaptation to a fine-scale topographic gradient with associated edaphic and hydrologic features. Combining LiDAR-derived topography, tree inventories, and single nucleotide polymorphisms (SNPs) from gene capture experiments, we explored genome-wide population genetic structure, covariation of environmental variables, and genotype-environment association to assess microgeographic adaptations to topography within the species complexes Symphonia (Clusiaceae), and Eschweilera (Lecythidaceae) with three species per complex and 385 and 257 individuals genotyped, respectively. Within species complexes, closely related tree species had different realized optima for topographic niches defined through the topographic wetness index or the relative elevation, and species displayed genetic signatures of adaptations to these niches. Symphonia species were genetically differentiated along water and nutrient distribution particularly in genes responding to water deprivation, whereas Eschweilera species were genetically differentiated according to soil chemistry. Our results suggest that varied topography represents a powerful driver of processes modulating tropical forest biodiversity with differential adaptations that stabilize local coexistence of closely related tree species.
dc.description.sponsorshipCEnter of the study of Biodiversity in Amazonia - ANR-10-LABX-0025
dc.language.isoen
dc.publisherWiley
dc.subject.enecological niche
dc.subject.enFrench Guiana
dc.subject.enrelative elevation
dc.subject.enspecies coexistence
dc.subject.ensyngameon
dc.subject.entopographic wetness index
dc.subject.entropical forests
dc.title.enTopography drives microgeographic adaptations of closely related species in two tropical tree species complexes
dc.typeArticle de revue
dc.identifier.doi10.1111/mec.16116
dc.subject.halSciences du Vivant [q-bio]/Génétique/Génétique des plantes
dc.subject.halSciences du Vivant [q-bio]/Biodiversité/Evolution [q-bio.PE]
dc.subject.halSciences du Vivant [q-bio]/Génétique/Génétique des populations [q-bio.PE]
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Sylviculture, foresterie
bordeaux.journalMolecular Ecology
bordeaux.page5080-5093
bordeaux.volume30
bordeaux.issue20
bordeaux.peerReviewedoui
hal.identifierhal-03338488
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03338488v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Molecular%20Ecology&rft.date=2021&rft.volume=30&rft.issue=20&rft.spage=5080-5093&rft.epage=5080-5093&rft.eissn=0962-1083&rft.issn=0962-1083&rft.au=SCHMITT,%20Sylvain&TYSKLIND,%20Niklas&H%C3%89RAULT,%20Bruno&HEUERTZ,%20Myriam&rft.genre=article


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