Pleistocene climate change and the formation of regional species pools

Calatayud, Joaquín; Rodríguez, Miguel Ángel; Molina-Venegas, Rafael; Leo, María; Horreo, Jose Luis; Hortal, Joaquín (2019). Pleistocene climate change and the formation of regional species pools. Proceedings of the Royal Society B: Biological sciences, 286(1905), p. 20190291. The Royal Society 10.1098/rspb.2019.0291

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Although the description of bioregions dates back to the origin of biogeography, the processes originating their associated species pools have been seldom studied. Ancient historical events are thought to play a fundamental role in configuring bioregions, but the effects of more recent events on these regional biotas are largely unknown. We used a network approach to identify regional and sub-regional faunas of European Carabus beetles and developed a method to explore the relative contribution of dispersal barriers, niche similarities and phylogenetic history on their configuration. We identify a transition zone matching the limit of the ice sheets at the Last Glacial Maximum. While southern species pools are mostly separated by dispersal barriers, in the north species are mainly sorted by their environmental niches. Strikingly, most phylogenetic structuration of Carabus faunas occurred during the Pleistocene. Our results show how extreme recent historical events—such as Pleistocene climate cooling, rather than just deep-time evolutionary processes—can profoundly modify the composition and structure of geographical species pools.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant Ecology
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Molina Venegas, Rafael

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

1471-2954

Publisher:

The Royal Society

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

24 Jul 2019 10:52

Last Modified:

23 Oct 2019 07:22

Publisher DOI:

10.1098/rspb.2019.0291

PubMed ID:

31213189

Uncontrolled Keywords:

Carabus ground beetles; niche tracking; dispersal; bioregions; Pleistocene glaciations; historical biogeography

BORIS DOI:

10.7892/boris.131550

URI:

https://boris.unibe.ch/id/eprint/131550

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