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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
dc.subject PALYNOLOGY
dc.subject DESERTIFICATION
dc.subject PATAGONIA
dc.subject.classification Paleontología
dc.subject.classification Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification 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
dc.description.fil 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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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)