Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation
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...
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ftunivlaplata:oai:sedici.unlp.edu.ar:10915/85769 2023-05-15T13:47:46+02:00 Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation Paunero, Rafael Sebastián 2016 application/pdf http://sedici.unlp.edu.ar/handle/10915/85769 en eng Science Advances vol. 2, no. 6 http://sedici.unlp.edu.ar/handle/10915/85769 issn:2375-2548 http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) CC-BY-NC Arqueología Ecología Megafaunal extinctions Late Pleistocene Climate change Articulo 2016 ftunivlaplata 2020-10-18T00:01:56Z 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. La lista completa de autores que integran el documento puede consultarse en el archivo Facultad de Ciencias Naturales y Museo Article in Journal/Newspaper Antarc* Antarctic Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) Antarctic The Antarctic |
institution |
Open Polar |
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Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
op_collection_id |
ftunivlaplata |
language |
English |
topic |
Arqueología Ecología Megafaunal extinctions Late Pleistocene Climate change |
spellingShingle |
Arqueología Ecología Megafaunal extinctions Late Pleistocene Climate change Paunero, Rafael Sebastián Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation |
topic_facet |
Arqueología Ecología Megafaunal extinctions Late Pleistocene Climate change |
description |
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. La lista completa de autores que integran el documento puede consultarse en el archivo Facultad de Ciencias Naturales y Museo |
format |
Article in Journal/Newspaper |
author |
Paunero, Rafael Sebastián |
author_facet |
Paunero, Rafael Sebastián |
author_sort |
Paunero, Rafael Sebastián |
title |
Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation |
title_short |
Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation |
title_full |
Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation |
title_fullStr |
Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation |
title_full_unstemmed |
Synergistic roles of climate warming and human occupation in Patagonian megafaunal extinctions during the Last Deglaciation |
title_sort |
synergistic roles of climate warming and human occupation in patagonian megafaunal extinctions during the last deglaciation |
publishDate |
2016 |
url |
http://sedici.unlp.edu.ar/handle/10915/85769 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Science Advances vol. 2, no. 6 http://sedici.unlp.edu.ar/handle/10915/85769 issn:2375-2548 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) |
op_rightsnorm |
CC-BY-NC |
_version_ |
1766247830690725888 |