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Spatial and temporal variation in fisher-hunter-gatherer diets in southern California: Bayesian modeling using new baseline stable isotope values
Quaternary International ( IF 2.2 ) Pub Date : 2021-07-01 , DOI: 10.1016/j.quaint.2021.06.025
Mikael Fauvelle , Andrew D. Somerville

Understanding how maritime hunter-gatherer diets changed through time in response to increasing social complexity can help us understand important transitions in early human history. This paper presents new baseline stable isotope values for southern California with an emphasis on marine plant and animal species. We use our baseline database to reevaluate human stable isotope values from the region using Bayesian mixing models to interpret dietary patterns across time and geographic space. Our analysis compares categories of foods consumed between island, coastal, and interior populations across the Middle and Late Holocene (circa 8000 to 168 cal BP) occupational history of precolonial southern California. Our results show a clear increase in the importance of high trophic marine foods, such as finfish, relative to low trophic level food, such as shellfish through time, paralleling increases in population size, economic intensification, and village aggregation in the Channel Region. This case study displays the capacity of Bayesian modeling to infer patterns of dietary change in the past when applied to human isotope values and adds to previous studies on the relationship between population growth, technological innovation, and the intensification of resource extraction in the region.



中文翻译:

南加州渔民-狩猎-采集者饮食的时空变化:使用新基线稳定同位素值的贝叶斯建模

了解海上狩猎采集者的饮食如何随着时间的推移随着社会复杂性的增加而发生变化,可以帮助我们了解早期人类历史中的重要转变。本文介绍了加利福尼亚南部的新基线稳定同位素值,重点是海洋植物和动物物种。我们使用我们的基线数据库使用贝叶斯混合模型重新评估该地区的人类稳定同位素值,以解释跨时间和地理空间的饮食模式。我们的分析比较了全新世中期和晚期(大约 8000 到 168 cal BP)前殖民时期南加州的职业历史,岛屿、沿海和内陆人口消费的食物类别。我们的研究结果表明,相对于低营养级食物,高营养级海洋食物(例如有鳍鱼)的重要性明显增加,例如贝类随着时间的推移,与海峡地区的人口规模、经济集约化和村庄聚集同时增加。本案例研究展示了贝叶斯模型在应用于人类同位素值时推断过去饮食变化模式的能力,并增加了先前关于该地区人口增长、技术创新和资源开采集约化之间关系的研究。

更新日期:2021-07-01
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