DOI: 10.1016/j.quascirev.2017.11.030
Scopus记录号: 2-s2.0-85040312422
论文题名: Sea-level change and demography during the last glacial termination and early Holocene across the Australian continent
作者: Williams A.N. ; Ulm S. ; Sapienza T. ; Lewis S. ; Turney C.S.M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 182 起始页码: 144
结束页码: 154
语种: 英语
英文关键词: Aboriginal Australian demography
; Coastal shelf inundation
; Meltwater Pulse 1a
; MWP1a
; Radiocarbon ages and modeling
; Sahul
; Sea-level change
Scopus关键词: Ecosystems
; Floods
; Glacial geology
; Population statistics
; Aboriginal Australian demography
; Coastal shelf inundation
; Meltwater pulse 1a
; MWP1a
; Radiocarbon age
; Sahul
; Sealevel change
; Sea level
; archaeology
; continental shelf
; demography
; Holocene
; hunter-gatherer
; indigenous population
; Last Glacial
; Last Glacial Maximum
; meltwater
; paleoenvironment
; population density
; radiocarbon dating
; sea level change
; Australia
; Bass Strait
; New Guinea
英文摘要: Future changes in sea-level are projected to have significant environmental and social impacts, but we have limited understanding of comparable rates of change in the past. Using comprehensive palaeoenvironmental and archaeological datasets, we report the first quantitative model of the timing, spatial extent and pace of sea-level change in the Sahul region between 35-8 ka, and explore its effects on hunter-gatherer populations. Results show that the continental landmass (excluding New Guinea) increased to 9.80 million km2 during the Last Glacial Maximum (LGM), before a reduction of 2.12 million km2 (or ∼21.6%) to the early Holocene (8 ka). Almost 90% of this inundation occurs during and immediately following Meltwater Pulse (MWP) 1a between 14.6 and 8 ka. The location of coastlines changed on average by 139 km between the LGM and early Holocene, with some areas >300 km, and at a rate of up to 23.7 m per year (∼0.6 km land lost every 25-year generation). Spatially, inundation was highly variable, with greatest impacts across the northern half of Australia, while large parts of the east, south and west coastal margins were relatively unaffected. Hunter-gatherer populations remained low throughout (<30,000), but following MWP1a, increasing archaeological use of the landscape, comparable to a four-fold increase in populations, and indicative of large-scale migration away from inundated regions (notably the Bass Strait) are evident. Increasing population density resulting from MWP1a (from 1/655 km2 to 1/71 km2) may be implicated in the development of large and complex societies later in the Holocene. Our data support the hypothesis that late Pleistocene coastal populations were low, with use of coastal resources embedded in broad-ranging foraging strategies, and which would have been severely disrupted in some regions and at some time periods by sea-level change outpacing tolerances of mangals and other near-shore ecological communities. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112303
Appears in Collections: 气候减缓与适应
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作者单位: Climate Change Research Centre, School of Biological, Earth and Environmental Sciences, The University of New South WalesNSW 2052, Australia; Extent Heritage Pty Ltd, 3/73 Union Street, Pyrmont, NSW 2009, Australia; ARC Centre of Excellence for Australian Biodiversity and Heritage, James Cook University, PO Box 6811, Cairns, QLD 4870, Australia; College of Arts, Society and Education, James Cook University, PO Box 6811, Cairns, QLD 4870, Australia; Centre for Tropical Water and Aquatic Ecosystem Research, James Cook University, Townsville, QLD 4811, Australia; ARC Centre of Excellence for Australian Biodiversity and Heritage, Palaeontology, Geobiology and Earth Archives Research Centre, School of Biological, Earth and Environmental Sciences, The University of New South WalesNSW 2052, Australia
Recommended Citation:
Williams A.N.,Ulm S.,Sapienza T.,et al. Sea-level change and demography during the last glacial termination and early Holocene across the Australian continent[J]. Quaternary Science Reviews,2018-01-01,182