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Holocene demographic changes and the emergence of complex societies in prehistoric Australia
In: PLOS ONE (2015)
Abstract: A continental-scale model of Holocene Australian hunter-gatherer demography and mobility is generated using radiocarbon data and geospatial techniques. Results show a delayed expansion and settlement of much of Australia following the termination of the late Pleistocene until after 9,000 years ago (or 9ka). The onset of the Holocene climatic optimum (9-6ka) coincides with rapid expansion, growth and establishment of regional populations across ~75% of Australia, including much of the arid zone. This diffusion from isolated Pleistocene refugia provides a mechanism for the synchronous spread of pan-continental archaeological and linguistic attributes at this time (e.g. Pama-Nyungan language, Panaramitee art style, backed artefacts). We argue longer patch residence times were possible at the end of the optimum, resulting in a shift to more sedentary lifestyles and establishment of low-level food production in some parts of the continent. The onset of El Niño - Southern Oscillation (ENSO; 4.5-2ka) restricted low-level food production, and resulted in population fragmentation, abandonment of marginal areas, and reduction in ranging territory of ~26%. Importantly, climate amelioration brought about by more pervasive La Niña conditions (post-2ka), resulted in an intensification of the mobility strategies and technological innovations that were developed in the early- to mid-Holocene. These changes resulted in population expansion and utilization of the entire continent. We propose that it was under these demographically packed conditions that the complex social and religious societies observed at colonial contact were formed. ; SU is the recipient of an Australian Research Council (ARC) Future Fellowship (project number FT120100656). This research was supported under Australian Research Council's Discovery Projects funding scheme (project number DP120103179 and DP130100334) (http://www.arc. gov.au). CSMT is the recipient of an ARC Laureate Fellowship (project number FL100100195) (http://www.arc.gov.au).
URL: https://doi.org/10.1371/journal.pone.0128661
http://hdl.handle.net/1885/16057
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2
Holocene demographic changes and the emergence of complex societies in prehistoric Australia
In: PLOS ONE (2015)
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3
Holocene demographic changes and the emergence of complex societies in prehistoric Australia
Williams, Alan N.; Ulm, Sean; Turney, Chris S.M.. - : Public Library of Science, 2015
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4
Holocene Demographic Changes and the Emergence of Complex Societies in Prehistoric Australia
Williams, Alan N.; Ulm, Sean; Turney, Chris S. M.. - : Public Library of Science, 2015
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5
Holocene demographic changes and the emergence of complex societies in prehistoric Australia
Williams, Alan N.; Ulm, Sean; Turney, Chris S. M.. - : Public Library of Science, 2015
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