Reference : Can Pleistocene refuge theory explain within-species patterns of genetic diversity in...
Scientific congresses and symposiums : Poster
Life sciences : Genetics & genetic processes
Life sciences : Environmental sciences & ecology
Can Pleistocene refuge theory explain within-species patterns of genetic diversity in African lowland rainforest trees?
Heuertz, Myriam mailto [> >]
Savolainen, Vincent [> >]
Budde, Katharina [> >]
Daïnou, Kasso mailto [Université de Liège - ULiège > Forêts, Nature et Paysage > Laboratoire de Foresterie des régions trop. et subtropicales >]
Dauby, Gilles [> >]
Duminil, Jérôme [> >]
Koffi, Guillaume K. [> >]
Hardy, Olivier J. [> >]
Colloque - Projet IFORA
du 21 au 22 juin 2010
Agence National de la Recherche
[en] genetic diversity ; tropical rainforest ; forest refuge
[en] Pleistocene refuge theory holds that regions which nowadays harbour high numbers of endemic species correspond to forest refuges, where rainforest persisted through periods of adverse climatic conditions. In order to test this theory, we surveyed geographical patterns of genetic diversity based on chloroplast DNA sequences in 15 rainforest tree species from 12 plant families in Atlantic Equatorial Africa. We found frequent geographic structure in the data sets, but no consistent pattern of genetic structure due to refugia. Species with gravity-dispersed oily seeds display low polymorphism whilst those with divergent lineages or ancient species display high polymorphism. Phylogeographical signals often correspond to taxa with divergent lineages.
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