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dc.contributor.author
Nanavati, William P.
dc.contributor.author
Whitlock, Cathy
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dc.contributor.author
Iglesias, Virginia
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dc.contributor.author
de Porras, Maria Eugenia
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dc.date.available
2021-02-05T02:41:30Z
dc.date.issued
2019-01
dc.identifier.citation
Nanavati, William P.; Whitlock, Cathy; Iglesias, Virginia; de Porras, Maria Eugenia; Postglacial vegetation, fire, and climate history along the eastern Andes, Argentina and Chile (lat. 41-55°S); Pergamon-Elsevier Science Ltd; Quaternary Science Reviews; 207; 1-2019; 145-160
dc.identifier.issn
0277-3791
dc.identifier.uri
http://hdl.handle.net/11336/124905
dc.description.abstract
The role of climate in shaping the postglacial history of Patagonia (41–55°S) east of the Andes is evident in new pollen and charcoal data from Mallín Fontanito (44.91oS, 71.57oW) and their comparison with other paleoenvironmental records in the region. Between 17,800–13,000 cal yr BP, evidence of heath-steppe vegetation with some Nothofagus and little fire activity at M. Fontanito suggest cold, dry conditions in early late-glacial time. From 13,000–7000 cal yr BP, increased Nothofagus pollen and charcoal levels imply expanding tree cover and more fires, consistent with warming. Between 7000 and 4000 cal yr BP, closed Nothofagus forest was established at M. Fontanito during a period of low fire activity and effectively wetter conditions than before. Fluctuations in pollen and charcoal levels after 4000 cal yr BP are consistent with increased submillennial climate variability. The environmental history at M. Fontanito is similar to other records from central Patagonia east of the Andes (44-50oS); however, differences in the timing of fires and human occupation suggest that pre-European burning was local in nature. At a regional scale, composited Nothofagus pollen abundance and charcoal data east of the Andes (41-55oS) reveal latitudinal differences in the timing of forest establishment and fire that relate to changes in the strength and position of the Southern Westerly Winds (SWW) through time. Notably, the SWW were south of their present position between 14,000 and 9000 cal yr BP, leading to dry conditions across the region. The present storm-track position was established after 7000 cal yr BP, when region-wide increases in precipitation occurred.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
FIRE HISTORY
dc.subject
PALEOECOLOGY
dc.subject
PATAGONIA
dc.subject
POSTGLACIAL
dc.subject
SOUTHERN WESTERLIES
dc.subject
VEGETATION HISTORY
dc.subject.classification
Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Postglacial vegetation, fire, and climate history along the eastern Andes, Argentina and Chile (lat. 41-55°S)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-20T17:50:26Z
dc.journal.volume
207
dc.journal.pagination
145-160
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Nanavati, William P.. State University of Montana. Department of Earth Sciences; Estados Unidos
dc.description.fil
Fil: Whitlock, Cathy. State University of Montana. Department of Earth Sciences; Estados Unidos
dc.description.fil
Fil: Iglesias, Virginia. University of Colorado; Estados Unidos
dc.description.fil
Fil: de Porras, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.journal.title
Quaternary Science Reviews
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.quascirev.2019.01.014
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0277379118310369
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