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dc.contributor.author
Palazzesi, Luis
dc.contributor.author
Barreda, Viviana Dora
dc.contributor.author
Cuitiño, José Ignacio
dc.contributor.author
Guler, Maria Veronica
dc.contributor.author
Telleria, Maria Cristina
dc.contributor.author
Ventura Santos, R.
dc.date.available
2016-09-07T19:25:24Z
dc.date.issued
2014-04
dc.identifier.citation
Palazzesi, Luis; Barreda, Viviana Dora; Cuitiño, José Ignacio; Guler, Maria Veronica; Telleria, Maria Cristina; et al.; Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift; Nature Publishing Group; Nature Communications; 5; 3558; 4-2014; 1-8
dc.identifier.issn
2041-1723
dc.identifier.uri
http://hdl.handle.net/11336/7533
dc.description.abstract
The Patagonian steppe—a massive rain-shadow on the lee side of the southern Andes—is assumed to have evolved ~15–12 Myr as a consequence of the southern Andean uplift. However, fossil evidence supporting this assumption is limited. Here we quantitatively estimate climatic conditions and plant richness for the interval ~10–6 Myr based on the study and bioclimatic analysis of terrestrially derived spore–pollen assemblages preserved in well-constrained Patagonian marine deposits. Our analyses indicate a mesothermal climate, with mean temperatures of the coldest quarter between 11.4 °C and 16.9 °C (presently ~3.5 °C) and annual precipitation rarely below 661 mm (presently ~200 mm). Rarefied richness reveals a significantly more diverse flora during the late Miocene than today at the same latitude but comparable with that approximately 2,000 km further northeast at mid-latitudes on the Brazilian coast. We infer that the Patagonian desertification was not solely a consequence of the Andean uplift as previously insinuated.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nature Publishing Group
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Miocene
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Palynology
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Desertification
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Patagonia
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-07-12T15:21:29Z
dc.journal.volume
5
dc.journal.number
3558
dc.journal.pagination
1-8
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Palazzesi, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina. Royal Botanic Gardens; Reino Unido
dc.description.fil
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
dc.description.fil
Fil: Cuitiño, José Ignacio. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
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Fil: Guler, Maria Veronica. Universidad Nacional del Sur. Departamento de Biolog__itilde__a, Bioqu__itilde__mica y Farmacia; Argentina
dc.description.fil
Fil: Telleria, Maria Cristina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Ventura Santos, R.. Universidade Do Brasilia. Instituto de Geociencias; Brasil
dc.journal.title
Nature Communications
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/ncomms4558
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/ncomms4558


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