Post-glacial Colonization of Western Europe Brown Bears From a Cryptic Atlantic Refugium Out of the Iberian Peninsula

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Post-glacial Colonization of Western Europe Brown Bears From a Cryptic Atlantic Refugium Out of the Iberian PeninsulaDate
2017-10-04Citation
Ana García-Vázquez, Ana Cristina Pinto Llona & Aurora Grandal-d’Anglade (2019) Post-glacial colonization of Western Europe brown bears from a cryptic Atlantic refugium out of the Iberian Peninsula, Historical Biology, 31:5, 618-630, DOI: 10.1080/08912963.2017.1384473
Abstract
[Abstract] The European brown bear (Ursus arctos) shows a particular phylogeography that has been used to illustrate the model for contraction-expansion dynamics related to glacial refugia in Southern European peninsulas. Recent studies, however, have nuanced the once generally accepted paradigm, indicating the existence of cryptic refugia for some species further north. In this paper we collected available data on chronology and mitochondrial haplotypes from Western European brown bears, adding new sequences from present day individuals from the Cantabrian (North Iberia) area, in order to reconstruct the dynamics of the species in the region. Both genetics and chronology show that the Iberian Pleistocene lineages were not the direct ancestors of the Holocene ones, the latter entering the Peninsula belatedly (around 10,000 years BP) with respect to other areas such as the British Isles. We therefore propose the existence of a cryptic refugium in continental Atlantic Europe, from where the bears would expand as the ice receded. The delay in the recolonization of the Iberian Peninsula could be due to the orographic characteristics of the Pyrenean-Cantabrian region and to the abundant presence of humans in the natural entrance to the Peninsula.
Keywords
Ursus arctos
Brown bear
LGM
Postglacial colonization
Iberian Peninsula
Criptic refugium
Brown bear
LGM
Postglacial colonization
Iberian Peninsula
Criptic refugium
Description
This is an Accepted Manuscript version, accepted for publication in Historical Biology.
Editor version
Rights
It is deposited under the terms of the Creative Commons Attribution-NonCommercial License which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
ISSN
1029-2381