Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation

Autores
Bianchi, Maria Martha; Ariztegui, Daniel
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In Northern Patagonia, the long-term vegetation-climate relationships that gave shape to southern South American forests have been the subject of extensive investigations in the Andean regions of Argentina and Chile for about a century. The Río Manso Superior originates in one of the tongues of the Cerro Tronador Glacier, near the international border, discharging into the Pacific Ocean after feeding present Lago Mascardi and flowing east to west on a mountain landscape. Ongoing pollen studies in this watershed provide us with a modern analogue to better understand the vegetation history of the region. A pollen record from a 15 m long sediment core retrieved from Lago Mascardi (41°08°S, 71°34°W) contains continuous evidence of vegetation changes in the Río Manso watershed extending back to the last deglaciation. High Andean steppe vegetation with forest patches, and extended waterlogged areas gave place to a forest, probably deciduous, during the Lateglacial-Holocene transition. A forest diversification took place during the climate amelioration that encompassed the deglaciation whilst the vegetation became more open before the onset of the Huelmo-Mascardi cold reversal. A mixed Nothofagus-Austrocedrus forest expanded during the middle Holocene. This forest became denser under the higher climate variability registered in the region during the late Holocene as shown by independent published data. Statistical analyses of modern pollen samples along an altitudinal transect from low Nothofagus forest and shrubland to high Andean semi-desert support this interpretation. Pollen results are discussed in the context of paleoenvironmental reconstructions at a regional scale.
Fil: Bianchi, Maria Martha. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ariztegui, Daniel. Universidad de Ginebra; Suiza
Materia
ARGENTINA
HOLOCENE
LATEGLACIAL
PATAGONIA
POLLEN ANALYSIS
VEGETATION HISTORY
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:11336/194739
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciationBianchi, Maria MarthaAriztegui, DanielARGENTINAHOLOCENELATEGLACIALPATAGONIAPOLLEN ANALYSISVEGETATION HISTORYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In Northern Patagonia, the long-term vegetation-climate relationships that gave shape to southern South American forests have been the subject of extensive investigations in the Andean regions of Argentina and Chile for about a century. The Río Manso Superior originates in one of the tongues of the Cerro Tronador Glacier, near the international border, discharging into the Pacific Ocean after feeding present Lago Mascardi and flowing east to west on a mountain landscape. Ongoing pollen studies in this watershed provide us with a modern analogue to better understand the vegetation history of the region. A pollen record from a 15 m long sediment core retrieved from Lago Mascardi (41°08°S, 71°34°W) contains continuous evidence of vegetation changes in the Río Manso watershed extending back to the last deglaciation. High Andean steppe vegetation with forest patches, and extended waterlogged areas gave place to a forest, probably deciduous, during the Lateglacial-Holocene transition. A forest diversification took place during the climate amelioration that encompassed the deglaciation whilst the vegetation became more open before the onset of the Huelmo-Mascardi cold reversal. A mixed Nothofagus-Austrocedrus forest expanded during the middle Holocene. This forest became denser under the higher climate variability registered in the region during the late Holocene as shown by independent published data. Statistical analyses of modern pollen samples along an altitudinal transect from low Nothofagus forest and shrubland to high Andean semi-desert support this interpretation. Pollen results are discussed in the context of paleoenvironmental reconstructions at a regional scale.Fil: Bianchi, Maria Martha. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ariztegui, Daniel. Universidad de Ginebra; SuizaSage Publications Ltd2012-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/194739Bianchi, Maria Martha; Ariztegui, Daniel; Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 11-2012; 1283-12950959-6836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.sagepub.com/doi/10.1177/0959683611405083info:eu-repo/semantics/altIdentifier/doi/10.1177/0959683611405083info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:38Zoai:ri.conicet.gov.ar:11336/194739instacron: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 10:16:39.196CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
title Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
spellingShingle Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
Bianchi, Maria Martha
ARGENTINA
HOLOCENE
LATEGLACIAL
PATAGONIA
POLLEN ANALYSIS
VEGETATION HISTORY
title_short Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
title_full Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
title_fullStr Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
title_full_unstemmed Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
title_sort Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation
dc.creator.none.fl_str_mv Bianchi, Maria Martha
Ariztegui, Daniel
author Bianchi, Maria Martha
author_facet Bianchi, Maria Martha
Ariztegui, Daniel
author_role author
author2 Ariztegui, Daniel
author2_role author
dc.subject.none.fl_str_mv ARGENTINA
HOLOCENE
LATEGLACIAL
PATAGONIA
POLLEN ANALYSIS
VEGETATION HISTORY
topic ARGENTINA
HOLOCENE
LATEGLACIAL
PATAGONIA
POLLEN ANALYSIS
VEGETATION HISTORY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In Northern Patagonia, the long-term vegetation-climate relationships that gave shape to southern South American forests have been the subject of extensive investigations in the Andean regions of Argentina and Chile for about a century. The Río Manso Superior originates in one of the tongues of the Cerro Tronador Glacier, near the international border, discharging into the Pacific Ocean after feeding present Lago Mascardi and flowing east to west on a mountain landscape. Ongoing pollen studies in this watershed provide us with a modern analogue to better understand the vegetation history of the region. A pollen record from a 15 m long sediment core retrieved from Lago Mascardi (41°08°S, 71°34°W) contains continuous evidence of vegetation changes in the Río Manso watershed extending back to the last deglaciation. High Andean steppe vegetation with forest patches, and extended waterlogged areas gave place to a forest, probably deciduous, during the Lateglacial-Holocene transition. A forest diversification took place during the climate amelioration that encompassed the deglaciation whilst the vegetation became more open before the onset of the Huelmo-Mascardi cold reversal. A mixed Nothofagus-Austrocedrus forest expanded during the middle Holocene. This forest became denser under the higher climate variability registered in the region during the late Holocene as shown by independent published data. Statistical analyses of modern pollen samples along an altitudinal transect from low Nothofagus forest and shrubland to high Andean semi-desert support this interpretation. Pollen results are discussed in the context of paleoenvironmental reconstructions at a regional scale.
Fil: Bianchi, Maria Martha. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ariztegui, Daniel. Universidad de Ginebra; Suiza
description In Northern Patagonia, the long-term vegetation-climate relationships that gave shape to southern South American forests have been the subject of extensive investigations in the Andean regions of Argentina and Chile for about a century. The Río Manso Superior originates in one of the tongues of the Cerro Tronador Glacier, near the international border, discharging into the Pacific Ocean after feeding present Lago Mascardi and flowing east to west on a mountain landscape. Ongoing pollen studies in this watershed provide us with a modern analogue to better understand the vegetation history of the region. A pollen record from a 15 m long sediment core retrieved from Lago Mascardi (41°08°S, 71°34°W) contains continuous evidence of vegetation changes in the Río Manso watershed extending back to the last deglaciation. High Andean steppe vegetation with forest patches, and extended waterlogged areas gave place to a forest, probably deciduous, during the Lateglacial-Holocene transition. A forest diversification took place during the climate amelioration that encompassed the deglaciation whilst the vegetation became more open before the onset of the Huelmo-Mascardi cold reversal. A mixed Nothofagus-Austrocedrus forest expanded during the middle Holocene. This forest became denser under the higher climate variability registered in the region during the late Holocene as shown by independent published data. Statistical analyses of modern pollen samples along an altitudinal transect from low Nothofagus forest and shrubland to high Andean semi-desert support this interpretation. Pollen results are discussed in the context of paleoenvironmental reconstructions at a regional scale.
publishDate 2012
dc.date.none.fl_str_mv 2012-11
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/11336/194739
Bianchi, Maria Martha; Ariztegui, Daniel; Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 11-2012; 1283-1295
0959-6836
CONICET Digital
CONICET
url http://hdl.handle.net/11336/194739
identifier_str_mv Bianchi, Maria Martha; Ariztegui, Daniel; Vegetation history of the Río Manso Superior catchment area, Northern Patagonia (Argentina), since the last deglaciation; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 11-2012; 1283-1295
0959-6836
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.sagepub.com/doi/10.1177/0959683611405083
info:eu-repo/semantics/altIdentifier/doi/10.1177/0959683611405083
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
dc.publisher.none.fl_str_mv Sage Publications Ltd
publisher.none.fl_str_mv Sage Publications Ltd
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 13.070432

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