Delayed demographic transition following the adoption of cultivated plants in the eastern La Plata Basin and Atlantic coast, South America

Delayed demographic transition following the adoption of cultivated plants in the eastern La Plata Basin and Atlantic coast, South America
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拉普拉塔盆地东部和南美洲大西洋沿岸采用栽培植物后人口转变延迟

DOI:
10.1016/j.jas.2020.105293
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发表时间:
2021
影响因子:
2.8
通讯作者:
De Souza J
De Souza J
中科院分区:
地球科学2区
文献类型:
--
作者:
De Souza J

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了解过去在低地南美洲相对于生存变化的人口动态是至关重要的,以绘制与全球进程的比较。在这里,我们使用聚集的放射性碳数据作为拉普拉塔盆地东部和邻近的大西洋海岸、南美洲东南部的古人口统计学代表。结果表明,研究区的种群动态可以用一个由指数增长~6000-4000 cal BP、线性下降~4000-2000 cal BP和进一步指数增长~2000-500 cal BP组成的三阶段模型来解释。与区域趋势的局部偏差显示出异质景观,指数增长的第一阶段主要由沿海活动驱动。虽然驯化植物的第一次采用发生在这一时期,与人口增长的因果关系不能建立,因为植物种植可能已被纳入经济已经庞大的定居人口接近承载能力。指数增长的第二阶段是随着新的文化传统的到来,带来了更多样化的栽培植物和景观管理知识。我们的研究结果突出了南美洲人口动态和经济变化之间关系的复杂性,在我们的研究区域证明了延迟过渡。
Understanding past population dynamics in lowland South America relative to changes in subsistence is crucial for drawing comparisons with global processes. Here, we use aggregated radiocarbon data as a palaeodemography proxy for in the eastern La Plata Basin and adjacent Atlantic coast, southeastern South America. Our results show that population dynamics in the study area are best explained by a three-phase model consisting of exponential growth ~6000-4000 cal BP, linear decrease ~4000-2000 cal BP and further exponential growth ~2000-500 cal BP. Local deviations from the regional trend show a heterogeneous landscape, with the first phase of exponential growth mainly driven by activity in the coast. Although the first adoption of domesticated plants occurs during that period, a causal relationship with population growth cannot be established, as plant cultivation may have been incorporated into the economy of already large and settled populations approaching carrying capacity. The second phase of exponential growth follows the arrival of new cultural traditions, bringing with them a more diverse package of cultivated plants and landscape management practises. Our results highlight the complexity of the relationships between population dynamics and changes in economy in South America, with a delayed transition attested in our study region.
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影响因子: 0.7
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影响因子: 11.1
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DOI: 10.15184/aqy.2018.157
发表时间: 2018-12-01
期刊: ANTIQUITY
影响因子: 1.8
作者:
Fausto, Carlos;Neves, Eduardo G.
通讯作者: Neves, Eduardo G.
DOI: --
发表时间: 1988
期刊:
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