Show simple item record Metcalf, Jessica L. Turney, Chris Barnett, Ross Martin, Fabiana Bray, Sara C. Vilstrup, Julia T. Orlando, Ludovic Salas-Gismondi, Rodolfo Loponte, Daniel Medina, Matías De Nigris, Mariana Civalero, Teresa Fernández, Pablo Marcelo Gasco, Alejandra Durán, Victor Seymour, Kevin L. Otaola, Clara Gil, Adolfo Paunero, Rafael Prevosti, Francisco J. Bradshaw, Corey J. A. Wheeler, Jane C. Borrero, Luis Austin, Jeremy J. Cooper, Alan 2017-08-23T18:40:37Z 2017-08-23T18:40:37Z 2016-06-17
dc.identifier.citation Sci. Adv. 2016; 2 : e1501682 17 June 2016 es_ES
dc.identifier.issn 2375-2548
dc.identifier.other doi: 10.1126/sciadv.1501682
dc.description.abstract The causes of Late Pleistocene megafaunal extinctions (60,000 to 11,650 years ago, hereafter 60 to 11.65 ka) remain contentious, with major phases coinciding with both human arrival and climate change around the world. The Americas provide a unique opportunity to disentangle these factors as human colonization took place over a narrow timeframe (~15 to 14.6 ka) but during contrasting temperature trends across each continent. Unfortunately, limited data sets in South America have so far precluded detailed comparison. We analyze genetic and radiocarbon data from 89 and 71 Patagonian megafaunal bones, respectively, more than doubling the high-quality Pleistocene megafaunal radiocarbon data sets from the region.Weidentify anarrowmegafaunal extinction phase 12,280 ± 110 years ago, some 1 to 3 thousand years after initial human presence in the area. Although humans arrived immediately prior to a cold phase, the Antarctic Cold Reversal stadial, megafaunal extinctions did not occur until the stadial finished and the subsequent warming phase commenced some 1 to 3 thousand years later. The increased resolution provided by the Patagonianmaterial reveals that the sequence of climate andextinctionevents inNorthandSouth America were temporally inverted, but in both cases, megafaunal extinctions did not occur until human presence and climate warming coincided. Overall, metapopulation processes involving subpopulation connectivity on a continental scale appear to have been critical for megafaunal species survival of both climate change and human impacts. es_ES
dc.language.iso en es_ES
dc.publisher American Association for the Advancement of Science es_ES
dc.relation.ispartof Science Advances es_ES
dc.rights 2016 © The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). es_ES
dc.subject Ciencia es_ES
dc.subject Extinciones megafaunales es_ES
dc.subject Antarctic Cold Reversal stadial es_ES
dc.subject Pleistoceno tardío es_ES
dc.title Synergistic roles of climate warming and human occupation in patagonian megafaunal extinctions during the Last Deglaciation es_ES
dc.type Artículo es_ES

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