PETIT, Rémy; AGUINAGALDE, Itziar; DE BEAULIEU, Jacques-Louis; BITTKAU, Christiane; BREWER, Simon; CHEDDADI, Rachid; ENNOS, Richard; FINESCHI, Silvia; GRIVET, Delphine; LASCOUX, Martin; MOHANTY, Aparajita; MÜLLER-STARCK, Gerhard; DEMESURE-MUSCH, Brigitte; PALMÉ, Anna; MARTÍN, Juan Pedro; RENDELL, Sarah; VENDRAMIN, Giovanni

doi:10.1126/science.1083264

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PETIT, Rémy
Biodiversité, Gènes et Ecosystèmes [BioGeCo]

AGUINAGALDE, Itziar
Universidad Politécnica de Madrid [UPM]

DE BEAULIEU, Jacques-Louis
Institut Méditerranéen d'Ecologie et de Paléoécologie [IMEP]

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Science. 2003, vol. 300, n° 5625, p. 1563-1565

American Association for the Advancement of Science (AAAS)

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Glacial refuge areas are expected to harbor a large fraction of the intraspecific biodiversity of the temperate biota. To test this hypothesis, we studied chloroplast DNA variation in 22 widespread European trees and shrubs sampled in the same forests. Most species had genetically divergent populations in Mediterranean regions, especially those with low seed dispersal abilities. However, the genetically most diverse populations were not located in the south but at intermediate latitudes, a likely consequence of the admixture of divergent lineages colonizing the continent from separate refugia.< Réduire

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Glacial refugia: hotspots but not melting pots of genetic diversity

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