气候变化领域集成服务门户(CCPortal): Ostrich eggshell bead strontium isotopes reveal persistent macroscale social networking across late Quaternary southern Africa

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DOI	10.1073/pnas.1921037117
	Ostrich eggshell bead strontium isotopes reveal persistent macroscale social networking across late Quaternary southern Africa
	Stewart B.A.; Zhao Y.; Mitchell P.J.; Dewar G.; Gleason J.D.; Blum J.D.
发表日期	2020
ISSN	0027-8424
起始页码	6453
结束页码	6462
卷号	117 期号:12
英文摘要	Hunter-gatherer exchange networks dampen subsistence and reproductive risks by building relationships of mutual support outside local groups that are underwritten by symbolic gift exchange. Hxaro, the system of delayed reciprocity between Ju/'hoãn individuals in southern Africa's Kalahari Desert, is the best-known such example and the basis for most analogies and models of hunter-gatherer exchange in prehistory. However, its antiquity, drivers, and development remain unclear, as they do for long-distance exchanges among African foragers more broadly. Here we show through strontium isotope analyses of ostrich eggshell beads from highland Lesotho, and associated strontium isoscape development, that such practices stretch back into the late Middle Stone Age. We argue that these exchange items originated beyond the macroband from groups occupying the more water-stressed subcontinental interior. Tracking the emergence and persistence of macroscale, transbiome social networks helps illuminate the evolution of social strategies needed to thrive in stochastic environments, strategies that in our case study show persistence over more than 33,000 y. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Late Quaternary; Ostrich eggshell beads; Social networks; Southern Africa; Strontium isotope analysis
语种	英语
scopus关键词	strontium; strontium; Africa; archeology; Article; controlled study; demography; egg shell; enamel; geological time; Late Quaternary; Mesolithic; nonhuman; ostrich; priority journal; social evolution; social network; water stress; animal; Black person; chemistry; cultural anthropology; egg shell; history; human; social network; social support; Struthioniformes; Africa, Southern; African Continental Ancestry Group; Animals; Culture; Egg Shell; History, Ancient; Humans; Social Networking; Social Support; Strontium Isotopes; Struthioniformes
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/161019
作者单位	Stewart, B.A., Department of Anthropology and Museum of Anthropological Archaeology, University of Michigan, Ann Arbor, MI 48109-1259, United States, Rock Art Research Institute, University of the Witwatersrand, Wits, 2050, South Africa; Zhao, Y., Department of Anthropology and Museum of Anthropological Archaeology, University of Michigan, Ann Arbor, MI 48109-1259, United States; Mitchell, P.J., School of Archaeology, University of Oxford, Oxford, OX1 3TG, United Kingdom, School of Geography, Archaeology, and Environmental Studies, University of the Witwatersrand, Wits, 2050, South Africa; Dewar, G., Rock Art Research Institute, University of the Witwatersrand, Wits, 2050, South Africa, Department of Anthropology, University of Toronto Scarborough, Scarborough, ON M1C 1A4, Canada; Gleason, J.D., Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109-1005, United States; Blum, J.D., Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109-1005, United States
推荐引用方式 GB/T 7714	Stewart B.A.,Zhao Y.,Mitchell P.J.,et al. Ostrich eggshell bead strontium isotopes reveal persistent macroscale social networking across late Quaternary southern Africa[J],2020,117(12).
APA	Stewart B.A.,Zhao Y.,Mitchell P.J.,Dewar G.,Gleason J.D.,&Blum J.D..(2020).Ostrich eggshell bead strontium isotopes reveal persistent macroscale social networking across late Quaternary southern Africa.Proceedings of the National Academy of Sciences of the United States of America,117(12).
MLA	Stewart B.A.,et al."Ostrich eggshell bead strontium isotopes reveal persistent macroscale social networking across late Quaternary southern Africa".Proceedings of the National Academy of Sciences of the United States of America 117.12(2020).