Topography drives microgeographic adaptations of closely related species in two tropical tree species complexes
| hal.structure.identifier | Ecologie des forêts de Guyane [UMR ECOFOG] | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| dc.contributor.author | SCHMITT, Sylvain | |
| hal.structure.identifier | Ecologie des forêts de Guyane [UMR ECOFOG] | |
| dc.contributor.author | TYSKLIND, Niklas | |
| hal.structure.identifier | Forêts et Sociétés [UPR Forêts et Sociétés] | |
| hal.structure.identifier | Département Environnements et Sociétés [Cirad-ES] | |
| dc.contributor.author | HÉRAULT, Bruno | |
| hal.structure.identifier | Biodiversité, Gènes & Communautés [BioGeCo] | |
| dc.contributor.author | HEUERTZ, Myriam | |
| dc.date | 2021-08 | |
| dc.date.issued | 2021-08 | |
| dc.identifier.issn | 0962-1083 | |
| dc.description.abstractEn | Closely 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.sponsorship | CEnter of the study of Biodiversity in Amazonia - ANR-10-LABX-0025 | |
| dc.language.iso | en | |
| dc.publisher | Wiley | |
| dc.subject.en | ecological niche | |
| dc.subject.en | French Guiana | |
| dc.subject.en | relative elevation | |
| dc.subject.en | species coexistence | |
| dc.subject.en | syngameon | |
| dc.subject.en | topographic wetness index | |
| dc.subject.en | tropical forests | |
| dc.title.en | Topography drives microgeographic adaptations of closely related species in two tropical tree species complexes | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1111/mec.16116 | |
| dc.subject.hal | Sciences du Vivant [q-bio] | |
| bordeaux.journal | Molecular Ecology | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-03338488 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-03338488v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Molecular%20Ecology&rft.date=2021-08&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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