This article focuses on local paleohydrological changes experienced by the Las Pitas and Miriguaca Rivers in the south‐central Andes of Argentina and their impacts on hunter‐gatherers as they transitioned to food‐producing communities 7000–3000 cal. yr B.P. Paleoenvironmental reconstruction based on geomorphology, alluvial sedimentology, and diatom evidence indicates a dry phase of reduced streamflow between ca. 6700 and 4800 cal. yr B.P. for the Las Pitas River, and 6600 and 3000 cal. yr B.P. for the Miriguaca River. A phase of more humid environmental conditions commenced after ca. 4900 cal. yr B.P. along the Las Pitas River, and after 3000 cal. yr B.P. along the Miriguaca River. Differences in the chronology and magnitude of hydrological changes along both rivers are related to topographic and hydrological characteristics of their respective watersheds. Higher catchment elevation and enhanced orographic precipitation favored greater sensitivity for the Las Pitas River to short humid events during the middle‐to‐late Holocene. The archaeological evidence suggests that the paleohydrological changes within these catchments played a significant role in human occupational dynamics such that the Las Pitas River offered better environmental conditions for human occupation relative to the Miriguaca River as foragers increasingly relied on plant and animal domestication.

中文翻译：

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7000-3000加州高地沙漠河流域的古水文变化与人类职业。BP，阿根廷中南部安第斯山脉

本文重点介绍了阿根廷安第斯中南部的拉斯皮塔斯河和米里瓜卡河所经历的局部古水文变化，以及它们在过渡到7000-3000 cal的产粮社区时对狩猎采集者的影响。yr基于地貌，冲积沉积和硅藻证据的BP古环境重建表明，约旦河之间干流减少。6700和4800卡路里 年拉斯佩塔斯河的BP，以及6600和3000 cal。BP到达米里瓜卡河。大约在大约30分钟后开始进入较潮湿的环境条件。4900卡路里 BP沿拉斯皮塔斯河（Las Pitas River）以及3,000 cal之后。沿米里瓜卡河（Miriguaca River）的BP。沿两条河流的水文变化的时间顺序和大小差异与各自流域的地形和水文特征有关。更高的集水高度和地形降水的增加，有利于拉斯皮塔斯河对全新世中期至后期潮湿天气的敏感性更高。考古证据表明，这些流域内的古水文变化在人类职业动态中起着重要作用，与觅食者越来越依赖植物和动物驯化相比，拉斯皮塔斯河相对于米里瓜卡河为人类占领提供了更好的环境条件。更高的流域海拔高度和地形降水的增加有利于拉斯皮塔斯河对全新世中期至后期潮湿天气的敏感性更高。考古证据表明，这些流域内的古水文变化在人类职业动态中起着重要作用，与觅食者越来越依赖植物和动物驯化相比，拉斯皮塔斯河相对于米里瓜卡河为人类占领提供了更好的环境条件。更高的流域海拔高度和地形降水的增加有利于拉斯皮塔斯河对全新世中期至后期潮湿天气的敏感性更高。考古证据表明，这些流域内的古水文变化在人类职业动态中起着重要作用，与觅食者越来越依赖植物和动物驯化相比，拉斯皮塔斯河相对于米里瓜卡河为人类占领提供了更好的环境条件。