Data from: Geographically contrasting biodiversity reductions in a widespread New Zealand seabird

Nicolas J. Rawlence, Martyn Kennedy, Christian N. K. Anderson, Stefan Prost, Charlotte E. Till, Ian Smith, R. Paul Scofield, Alan J. D. Tennyson, Jill Hamel, Chris Lalas, Elizabeth A. Matisoo-Smith, Jonathan M. Waters & Ian W. G. Smith
Unravelling prehistoric anthropogenic impacts on biodiversity represents a key challenge for biologists and archaeologists. New Zealand's endemic Stewart Island Shag (Leucocarbo chalconotus) comprises two distinct phylogeographic lineages, currently restricted to the country's south and southeast. However, fossil and archaeological remains suggest a far more widespread distribution at the time of Polynesian settlement ca. 1280 AD, encompassing much of coastal South Island. We used modern and ancient DNA, radiocarbon dating, and Bayesian modelling, to assess the...

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