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Climate-human interaction associated with southeast Australian megafauna extinction patterns

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Title
Climate-human interaction associated with southeast Australian megafauna extinction patterns
Author(s)
Saltré, Frédérik; Chadoeuf, Joël; Peters, Katharina J.; McDowell, Matthew C.; Friedrich, Tobias; Axel Timmermann; Ulm, Sean; Bradshow, Corey J.A.
Publication Date
2019-11
Journal
NATURE COMMUNICATIONS, v.10, no., pp.5311 -
Publisher
NATURE PUBLISHING GROUP
Abstract
The mechanisms leading to megafauna (>44kg) extinctions in Late Pleistocene (126,000— 12,000 yearsago) Australia arehighlycontestedbecause standard chronologicalanalysesrely on scarce data of varying quality and ignore spatial complexity. Relevant archaeological and palaeontological records are most often also biased by differential preservation resulting in under-representated older events. Chronological analyses have attributed megafaunal extinctions to climate change, humans, or a combination of the two, but rarely consider spatial variation in extinction patterns, initial human appearance trajectories, and palaeoclimate change together. Here we develop a statistical approach to infer spatio-temporal trajectories of megafauna extirpations (local extinctions) and initial human appearance in south-eastern Australia. We identify a combined climate-human effect on regional extirpation patterns suggesting that small, mobile Aboriginal populations potentially needed access to drinkable water to survive arid ecosystems, but were simultaneously constrained by climate-dependent net landscape primary productivity. Thus, the co-drivers of megafauna extirpations were themselves constrained by the spatial distribution of climate-dependent water sources. © The Author(s) 2019
URI
https://pr.ibs.re.kr/handle/8788114/6821
ISSN
2041-1723
Appears in Collections:
Center for Climate Physics(기후물리 연구단) > Journal Papers (저널 논문)
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