Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift

Autores
Palazzesi, Luis; Barreda, Viviana Dora; Cuitiño, José Ignacio; Guler, Maria Veronica; Telleria, Maria Cristina; Ventura Santos, Roberto
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
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
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Guler, Maria Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
Fil: Telleria, Maria Cristina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ventura Santos, Roberto. Universidade Do Brasilia. Instituto de Geociencias; Brasil
Materia
Miocene
Palynology
Desertification
Patagonia
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/7533
Acceder
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spelling Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean upliftPalazzesi, LuisBarreda, Viviana DoraCuitiño, José IgnacioGuler, Maria VeronicaTelleria, Maria CristinaVentura Santos, RobertoMiocenePalynologyDesertificationPatagoniahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The 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.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 UnidoFil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; ArgentinaFil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Guler, Maria Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; ArgentinaFil: Telleria, Maria Cristina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ventura Santos, Roberto. Universidade Do Brasilia. Instituto de Geociencias; BrasilNature Publishing Group2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/7533Palazzesi, 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; 1-82041-1723enginfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/ncomms4558info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms4558info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:20:30Zoai:ri.conicet.gov.ar:11336/7533instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:20:30.95CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
title Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
spellingShingle Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
Palazzesi, Luis
Miocene
Palynology
Desertification
Patagonia
title_short Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
title_full Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
title_fullStr Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
title_full_unstemmed Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
title_sort Fossil pollen records indicate that Patagonian desertification was not solely a consequence of Andean uplift
dc.creator.none.fl_str_mv Palazzesi, Luis
Barreda, Viviana Dora
Cuitiño, José Ignacio
Guler, Maria Veronica
Telleria, Maria Cristina
Ventura Santos, Roberto
author Palazzesi, Luis
author_facet Palazzesi, Luis
Barreda, Viviana Dora
Cuitiño, José Ignacio
Guler, Maria Veronica
Telleria, Maria Cristina
Ventura Santos, Roberto
author_role author
author2 Barreda, Viviana Dora
Cuitiño, José Ignacio
Guler, Maria Veronica
Telleria, Maria Cristina
Ventura Santos, Roberto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Miocene
Palynology
Desertification
Patagonia
topic Miocene
Palynology
Desertification
Patagonia
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
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
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Guler, Maria Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
Fil: Telleria, Maria Cristina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ventura Santos, Roberto. Universidade Do Brasilia. Instituto de Geociencias; Brasil
description 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.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/7533
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
2041-1723
url http://hdl.handle.net/11336/7533
identifier_str_mv 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
2041-1723
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/ncomms4558
info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms4558
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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