Paleo-Drainage Basin Connectivity Predicts Evolutionary Relationships across Three Southeast Asian Biodiversity Hotspots

de Bruyn, M. and Rüber, L. and Nylinder, S. and Stelbrink, B. and Lovejoy, N.R. and Lavoué, S. and Tan, H.H. and Nugroho, E. and Wowor, D. and Ng, P.K.L. and Azizah, M.N. and Von Rintelen, T. and Hall, R. and Carvalho, G.R. (2013) Paleo-Drainage Basin Connectivity Predicts Evolutionary Relationships across Three Southeast Asian Biodiversity Hotspots. Systematic Biology, 62 (3). pp. 398-410. DOI: 10.1093/sysbio/syt007

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Understanding factors driving diversity across biodiversity hotspots is critical for formulating conservation priorities in the face of ongoing and escalating environmental deterioration. While biodiversity hotspots encompass a small fraction of Earth's land surface, more than half the world's plants and two-thirds of terrestrial vertebrate species are endemic to these hotspots. Tropical Southeast (SE) Asia displays extraordinary species richness, encompassing four biodiversity hotspots, though disentangling multiple potential drivers of species richness is confounded by the region's dynamic geological and climatic history. Here, we use multilocus molecular genetic data from dense multispecies sampling of freshwater fishes across three biodiversity hotspots, to test the effect of Quaternary climate change and resulting drainage rearrangements on aquatic faunal diversification. While Cenozoic geological processes have clearly shaped evolutionary history in SE Asian halfbeak fishes, we show that paleo-drainage re-arrangements resulting from Quaternary climate change played a significant role in the spatiotemporal evolution of lowland aquatic taxa, and provide priorities for conservation efforts. [Freshwater; geology; halfbeak; island radiation; Miocene; Pleistocene; river; Southeast Asia.]

Item Type: Article
Subjects: Research Publications
Departments: College of Natural Sciences > School of Biological Sciences
Date Deposited: 09 Dec 2014 16:43
Last Modified: 23 Sep 2015 03:06
ISSN: 1063-5157
URI: http://e.bangor.ac.uk/id/eprint/874
Identification Number: DOI: 10.1093/sysbio/syt007
Publisher: Oxford University Press
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