Isotopic evidence of diet breadth hunter-gatherers changes during the Holocene in the Central Pampean Dunefields (Argentina, South America).

IF 1.7 2区 生物学 Q1 ANTHROPOLOGY American Journal of Biological Anthropology Pub Date : 2024-11-06 DOI:10.1002/ajpa.25039
Nahuel A Scheifler, Pablo G Messineo, Hervé Bocherens, Gustavo G Politis
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Abstract

Objectives: Based on the analysis of stable carbon and nitrogen isotopes of bone collagen, stable carbon isotopes of bone apatite and an extensive AMS dating series (~10,000-299 years cal BP), the human paleodiets of 34 individuals from the Central Pampean Dunefields (Argentina, South America) are evaluated.

Materials and methods: These data are interpreted from the isotopic ecology of animals with archaeofaunal evidence of consumption and isotopic models of human diet. Multivariate carbon and nitrogen stable isotope model and Bayesian stable isotope ellipses were used to interpret human diets.

Results: Analysis of isotopic values indicates intake of enriched lipids and/or carbohydrates in relation to the proteins consumed throughout the Holocene. The isotopic values of Middle Holocene humans in relation to the values of exploited resources point out that individuals obtained protein mainly from guanaco. Subsequently, there was an increase in the human breadth diet during the Late Holocene, with a greater relevance of small prey of high trophic levels and vegetables. This contrasts with zooarchaeological information indicating generalist human diets during the Middle Holocene and specialized human diets in guanaco during the Late Holocene.

Conclusions: It is proposed that during the Middle Holocene arid period, the combination of low human population density and high residential mobility in wide foraging ranges allowed the guanaco to be the main source of protein. During the Late Holocene humid period, there was an increase in human population density and a decrease in residential mobility, which caused greater pressure on foraging territories and increased dietary breadth.

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中帕潘沙丘(南美洲阿根廷)全新世期间狩猎采集者饮食广度变化的同位素证据。
研究目的根据对骨胶原的稳定碳和氮同位素、骨磷灰石的稳定碳同位素以及广泛的 AMS 测年系列(约公元前 10,000-299 年)的分析,对来自中帕潘沙丘(阿根廷,南美洲)的 34 个个体的人类古饮食进行评估:这些数据是从动物的同位素生态学与古动物的消费证据以及人类饮食的同位素模型来解释的。使用多变量碳和氮稳定同位素模型和贝叶斯稳定同位素椭圆来解释人类饮食:结果:对同位素值的分析表明,在整个全新世,人类摄入的蛋白质与摄入的脂类和/或碳水化合物有关。中全新世人类的同位素值与已开发资源值的关系表明,人类主要从羚羊身上获取蛋白质。随后,在全新世晚期,人类饮食的广度有所提高,更多地摄取高营养级的小型猎物和蔬菜。这与动物考古学资料显示的全新世中期人类饮食的普遍性和全新世晚期人类饮食的专一性形成了鲜明对比:结论:据推测,在全新世中期的干旱时期,人类人口密度低,而居住地流动性大,觅食范围广,这使得瓜纳科动物成为蛋白质的主要来源。在全新世晚期的湿润时期,人类人口密度增加,而居住地的流动性降低,这对觅食地造成了更大的压力,并增加了饮食的广度。
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Isotopic evidence of diet breadth hunter-gatherers changes during the Holocene in the Central Pampean Dunefields (Argentina, South America). Impact of relative lower-limb length on heat loss and body temperature during running. Issue Information - Table of Contents Cover & Editorial Board Hidden in plain text: Uncovering hidden heterogeneity and social stratification in Ireland AD 1150-1800.
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