气候变化领域集成服务门户(CCPortal): Human settlement of East Polynesia earlier; incremental; and coincident with prolonged South Pacific drought

CCPortal

DOI	10.1073/pnas.1920975117
	Human settlement of East Polynesia earlier; incremental; and coincident with prolonged South Pacific drought
	Sear D.A.; Allen M.S.; Hassall J.D.; Maloney A.E.; Langdon P.G.; Morrison A.E.; Henderson A.C.G.; Mackay H.; Croudace I.W.; Clarke C.; Sachs J.P.; Macdonald G.; Chiverrell R.C.; Leng M.J.; Cisneros-Dozal L.M.; Fonville T.
发表日期	2020
ISSN	0027-8424
起始页码	8813
结束页码	8819
卷号	117 期号:16
英文摘要	The timing of human colonization of East Polynesia, a vast area lying between Hawai'i, Rapa Nui, and New Zealand, is much debated and the underlying causes of this great migration have been enigmatic. Our study generates evidence for human dispersal into eastern Polynesia from islands to the west from around AD 900 and contemporaneous paleoclimate data from the likely source region. Lake cores from Atiu, Southern Cook Islands (SCIs) register evidence of pig and/or human occupation on a virgin landscape at this time, followed by changes in lake carbon around AD 1000 and significant anthropogenic disturbance from c. AD 1100. The broader paleoclimate context of these early voyages of exploration are derived from the Atiu lake core and complemented by additional lake cores from Samoa (directly west) and Vanuatu (southwest) and published hydroclimate proxies from the Society Islands (northeast) and Kiribati (north). Algal lipid and leaf wax biomarkers allow for comparisons of changing hydroclimate conditions across the region before, during, and after human arrival in the SCIs. The evidence indicates a prolonged drought in the likely western source region for these colonists, lasting c. 200 to 400 y, contemporaneous with the phasing of human dispersal into the Pacific. We propose that drying climate, coupled with documented social pressures and societal developments, instigated initial eastward exploration, resulting in SCI landfall(s) and return voyaging, with colonization a century or two later. This incremental settlement process likely involved the accumulation of critical maritime knowledge over several generations. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Biomarkers; Drought; East Polynesian colonizationm; Palaeoclimate; Polynesian voyaging
语种	英语
scopus关键词	algal lipid; biological marker; charcoal; fresh water; hydrogen; lipid; organic carbon; rain; sterol; titanium; unclassified drug; wax; agriculture; alga; anthropology; Article; carbon source; climate change; Cook Islands; drought; dry season; earlier Human settlement; East Polynesia; El Nino; feces analysis; geographic distribution; human; hydroclimate; incremental Human settlement; Kiribati; lake basin; lake sediment; magnetism; migration; nonhuman; paleoclimate; pig; plant leaf; Polynesia; population dispersal; priority journal; prolonged drought; quantitative analysis; rainy season; Samoa; seasonal variation; social change; social evolution; social problem; soil erosion; Tonga; tool use; trend study; Vanuatu; water supply; archeology; history; lake; migration; Polynesia; procedures; sediment; Archaeology; Droughts; Geologic Sediments; History, Ancient; Human Migration; Humans; Lakes; Polynesia
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160977
作者单位	Sear, D.A., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Allen, M.S., Anthropology, School of Social Sciences, University of Auckland, Auckland, 1142, New Zealand; Hassall, J.D., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Maloney, A.E., School of Oceanography, College of the Environment, University of Washington, Seattle, WA 98195, United States; Langdon, P.G., School of Geography and Environmental Science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Morrison, A.E., International Archaeology LLC, Honolulu, HI 96826, United States; Henderson, A.C.G., School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom; Mackay, H., School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom; Croudace, I.W., Geosciences Adv...
推荐引用方式 GB/T 7714	Sear D.A.,Allen M.S.,Hassall J.D.,et al. Human settlement of East Polynesia earlier; incremental; and coincident with prolonged South Pacific drought[J],2020,117(16).
APA	Sear D.A..,Allen M.S..,Hassall J.D..,Maloney A.E..,Langdon P.G..,...&Fonville T..(2020).Human settlement of East Polynesia earlier; incremental; and coincident with prolonged South Pacific drought.Proceedings of the National Academy of Sciences of the United States of America,117(16).
MLA	Sear D.A.,et al."Human settlement of East Polynesia earlier; incremental; and coincident with prolonged South Pacific drought".Proceedings of the National Academy of Sciences of the United States of America 117.16(2020).