Reconstructing colonization dynamics to establish how human activities transformed island biodiversity

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  • Sean Tomlinson
  • Mark V. Lomolino
  • Atholl Anderson
  • Jeremy J. Austin
  • Stuart C. Brown
  • Sean Haythorne
  • George L.W. Perry
  • Janet M. Wilmshurst
  • Jamie R. Wood
  • Damien A. Fordham
Drivers and dynamics of initial human migrations across individual islands and archipelagos are poorly understood, hampering assessments of subsequent modification of island biodiversity. We developed and tested a new statistical-simulation approach for reconstructing the pattern and pace of human migration across islands at high spatiotemporal resolutions. Using Polynesian colonisation of New Zealand as an example, we show that process-explicit models, informed by archaeological records and spatiotemporal reconstructions of past climates and environments, can provide new and important insights into the patterns and mechanisms of arrival and establishment of people on islands. We find that colonisation of New Zealand required there to have been a single founding population of approximately 500 people, arriving between 1233 and 1257 AD, settling multiple areas, and expanding rapidly over both North and South Islands. These verified spatiotemporal reconstructions of colonisation dynamics provide new opportunities to explore more extensively the potential ecological impacts of human colonisation on New Zealand’s native biota and ecosystems.
OriginalsprogEngelsk
Artikelnummer5261
TidsskriftScientific Reports
Vol/bind14
Udgave nummer1
Antal sider13
ISSN2045-2322
DOI
StatusUdgivet - 2024

Bibliografisk note

Funding Information:
We acknowledge the importance of indigenous data sovereignty and have ensured that there are no issues of Māori intellectual ownership, or mātauranga Māori or of any traditional beliefs with the data and its uses. D.A.F., J.J.A. and M.V.L. acknowledge funding from the Australian Research Council (DP180102392). The authors are grateful to Emma St Pierre for arranging temporary access to data maintained by the New Zealand Archaeological Association, and to Andrew Tait for arranging access to spatially rectified climate averages maintained by the National Institute of Water and Atmospheric Research.

Funding Information:
We acknowledge the importance of indigenous data sovereignty and have ensured that there are no issues of Māori intellectual ownership, or mātauranga Māori or of any traditional beliefs with the data and its uses. D.A.F., J.J.A. and M.V.L. acknowledge funding from the Australian Research Council (DP180102392). The authors are grateful to Emma St Pierre for arranging temporary access to data maintained by the New Zealand Archaeological Association, and to Andrew Tait for arranging access to spatially rectified climate averages maintained by the National Institute of Water and Atmospheric Research.

Publisher Copyright:
© The Author(s) 2024.

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