Synergistic roles of climate warming and human occupation in patagonian megafaunal extinctions during the Last Deglaciation

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dc.contributor.authorMetcalf, Jessica L.
dc.contributor.authorTurney, Chris
dc.contributor.authorBarnett, Ross
dc.contributor.authorMartin, Fabiana
dc.contributor.authorBray, Sara C.
dc.contributor.authorVilstrup, Julia T.
dc.contributor.authorOrlando, Ludovic
dc.contributor.authorSalas-Gismondi, Rodolfo
dc.contributor.authorLoponte, Daniel
dc.contributor.authorMedina, Matías
dc.contributor.authorDe Nigris, Mariana
dc.contributor.authorCivalero, Teresa
dc.contributor.authorFernández, Pablo Marcelo
dc.contributor.authorGasco, Alejandra
dc.contributor.authorDurán, Victor
dc.contributor.authorSeymour, Kevin L.
dc.contributor.authorOtaola, Clara
dc.contributor.authorGil, Adolfo
dc.contributor.authorPaunero, Rafael
dc.contributor.authorPrevosti, Francisco J.
dc.contributor.authorBradshaw, Corey J. A.
dc.contributor.authorWheeler, Jane C.
dc.contributor.authorBorrero, Luis
dc.contributor.authorAustin, Jeremy J.
dc.contributor.authorCooper, Alan
dc.date.accessioned2017-08-23T18:40:37Z
dc.date.available2017-08-23T18:40:37Z
dc.date.issued2016-06-17
dc.description.abstractThe 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.identifier.citationSci. Adv. 2016; 2 : e1501682 17 June 2016es_ES
dc.identifier.issn2375-2548
dc.identifier.otherdoi: 10.1126/sciadv.1501682
dc.identifier.urihttp://hdl.handle.net/20.500.11894/920
dc.language.isoenes_ES
dc.publisherAmerican Association for the Advancement of Sciencees_ES
dc.relation.ispartofScience Advanceses_ES
dc.rights2016 © 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.subjectCienciaes_ES
dc.subjectExtinciones megafaunaleses_ES
dc.subjectAntarctic Cold Reversal stadiales_ES
dc.subjectPleistoceno tardíoes_ES
dc.titleSynergistic roles of climate warming and human occupation in patagonian megafaunal extinctions during the Last Deglaciationes_ES
dc.typeArtículoes_ES

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