IMHICIHU   13380
INSTITUTO MULTIDISCIPLINARIO DE HISTORIA Y CIENCIAS HUMANAS
Unidad Ejecutora - UE
artículos
Título:
An examination of possible relationships between paleoenvironmental conditions during the Pleistocene-Holocene transition and human occupation of southern Patagonia (Argentina) east of the Andes, between 46º and 52º S
Autor/es:
GEORGE BROOK; MARÍA VIRGINIA MANCINI; NORA VIVIANA FRANCO; FLORENCIA BAMONTE; PABLO AMBRÚSTOLO
Revista:
QUATERNARY INTERNATIONAL
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam ; Año: 2013 vol. 305 p. 104 - 118
ISSN:
1040-6182
Resumen:
Spatial and temporal variations in evidence for human occupation of Argentinian south Patagonia closely resemble changes in past vegetation reconstructed from pollen records. The Antarctic Cold Reversal was cold and dry in the Deseado Massif and there is little evidence of humans at this time. In contrast, the Younger Dryas interval was warmer and slightly wetter and this was when humans moved into the Deseado area. Increasing temperatures during the early Holocene brought higher precipitation to much of Patagonia east of the Andes except the northern Deseado Massif, explaining the increase in evidence of human occupation in western areas and the decrease in evidence in the massif. Spatial and temporal variations in the frequency of radiocarbon dates indicating human presence, show that in southern Patagonia humans were not only in fluenced by the major climate shifts of the PleistoceneeHolocene transition but possibly also by distinct short-term changes lasting only a few to several centuries that are apparent in the high-resolution Antarctic Byrd ice core. Water availability may have had the greatest in fluence on human use of the landscape rather than temperature. However, as temperature is crucial in controlling the latitude of the core of the Southern Westerly Winds, associated with reduced precipitation over most of eastern Patagonia, it is dif ficult to separate water from temperature in examining impacts on the first humans in southernmost South America.