Biotic interchange between the Indian subcontinent and mainland Asia through time

Sebastian Klaus (), Robert J. Morley, Martin Plath, Ya-Ping Zhang and Jia-Tang Li ()
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Sebastian Klaus: Chengdu Institute of Biology, Chinese Academy of Sciences
Robert J. Morley: Palynova Ltd
Martin Plath: College of Animal Science and Technology, Northwest A&F University
Ya-Ping Zhang: State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences
Jia-Tang Li: Chengdu Institute of Biology, Chinese Academy of Sciences

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: Abstract Biotic interchange after the connection of previously independently evolving floras and faunas is thought to be one of the key factors that shaped global biodiversity as we see it today. However, it was not known how biotic interchange develops over longer time periods of several million years following the secondary contact of different biotas. Here we present a novel method to investigate the temporal dynamics of biotic interchange based on a phylogeographical meta-analysis by calculating the maximal number of observed dispersal events per million years given the temporal uncertainty of the underlying time-calibrated phylogenies. We show that biotic influx from mainland Asia onto the Indian subcontinent after Eocene continental collision was not a uniform process, but was subject to periods of acceleration, stagnancy and decrease. We discuss potential palaeoenvironmental causes for this fluctuation.

Date: 2016
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DOI: 10.1038/ncomms12132

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