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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/7533
Ver los metadatos del registro completo
id |
CONICETDig_3bd06a4a3ed088b7302bab774d7db902 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/7533 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
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 Técnicas2025-09-29T09:51:10Zoai: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:34982025-09-29 09:51:10.324CONICET 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 |
_version_ |
1844613574202228736 |
score |
13.070432 |