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dc.contributor.authorDuminil, J.
dc.contributor.authorDainou, K.
dc.contributor.authorKaviriri, D.K.
dc.contributor.authorGillet, P.
dc.contributor.authorLoo, J.
dc.contributor.authorDoucet, J.L.
dc.contributor.authorHardy, O.J.
dc.date.accessioned2016-02-08T11:08:15Z
dc.date.available2016-02-08T11:08:15Z
dc.date.issued2016
dc.identifier.citationDuminil, J.; Dainou, K.; Kaviriri, D.K.; Gillet, P.; Loo, J.; Doucet, J.L.; Hardy, O.J. (2016) Relationships between population density, fine-scale genetic structure, mating system and pollen dispersal in a timber tree from African rainforest. Heredity 116(3) p. 295–303 ISSN: 0018-067Xen_US
dc.identifier.issn0018-067X
dc.identifier.urihttp://hdl.handle.net/10568/70956
dc.description.abstractOwing to the reduction of population density and/or the environmental changes it induces, selective logging could affect the demography, reproductive biology and evolutionary potential of forest trees. This is particularly relevant in tropical forests where natural population densities can be low and isolated trees may be subject to outcross pollen limitation and/or produce low-quality selfed seeds that exhibit inbreeding depression. Comparing reproductive biology processes and genetic diversity of populations at different densities can provide indirect evidence of the potential impacts of logging. Here, we analysed patterns of genetic diversity, mating system and gene flow in three Central African populations of the self-compatible legume timber species Erythrophleum suaveolens with contrasting densities (0.11, 0.68 and 1.72 adults per ha). The comparison of inbreeding levels among cohorts suggests that selfing is detrimental as inbred individuals are eliminated between seedling and adult stages. Levels of genetic diversity, selfing rates (~16%) and patterns of spatial genetic structure (Sp ~0.006) were similar in all three populations. However, the extent of gene dispersal differed markedly among populations: the average distance of pollen dispersal increased with decreasing density (from 200 m in the high-density population to 1000 m in the low-density one). Overall, our results suggest that the reproductive biology and genetic diversity of the species are not affected by current logging practices. However, further investigations need to be conducted in low-density populations to evaluate (1) whether pollen limitation may reduce seed production and (2) the regeneration potential of the species.en_US
dc.language.isoenen_US
dc.publisherThe Genetics Societyen_US
dc.sourceHeredityen_US
dc.subjectPOPULATION DENSITYen_US
dc.subjectFOREST TREESen_US
dc.subjectREPRODUCTIONen_US
dc.subjectGENE FLOWen_US
dc.subjectGENETIC VARIATIONen_US
dc.subjectPOLLENen_US
dc.subjectLOGGINGen_US
dc.titleRelationships between population density, fine-scale genetic structure, mating system and pollen dispersal in a timber tree from African rainforesten_US
dc.description.versionPeer Reviewen_US
dc.typeJournal Articleen_US
cg.subject.bioversityPOPULATION DENSITY
cg.subject.bioversityFOREST TREES
cg.subject.bioversityREPRODUCTION
cg.subject.bioversityGENE FLOW
cg.subject.bioversityGENETIC VARIATION
cg.subject.bioversityLOGGING
cg.authorship.typesCGIAR and developing country instituteen_US
cg.identifier.statusOpen Accessen_US
cg.contributor.affiliationBioversity Internationalen_US
cg.contributor.affiliationUniversité Libre de Bruxellesen_US
cg.contributor.affiliationUniversité de Liègeen_US
cg.contributor.affiliationNature+en_US
cg.contributor.affiliationUniversité de Kisanganien_US
cg.targetaudienceSCIENTISTSen_US
cg.identifier.doihttps://dx.doi.org/10.1038/hdy.2015.101en_US
cg.isijournalISI Journalen_US
cg.coverage.regionCENTRAL AFRICAen_US
cg.contributor.crpForests, Trees and Agroforestryen_US


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