A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)

Autores
Martel Cea, Alejandra J.; Maldonado, Antonio J.; de Porras, Maria Eugenia; Muñoz, Praxedes Natalia; Maidana, Nora Irene; Massaferro, Julieta; Schittek, Karsten
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mountain ecosystems located in the Andes cordillera of central Chile (29-35°S) have been strongly affected by the ongoing Mega Drought since 2010 impacting the snow cover, the surficial water resources (and thereby water storage) as well as the mountain biota and ecosystem services. Paleoenvironmental records in this part of the semiarid Andes are key to estimate the effects of past climate changes on local communities helping to forecast the ecological and biological responses under the aridification trend projected during the 21 st century. Here we present a 2400-years multiproxy paleoenvironmental reconstruction based on pollen, diatoms, chironomids, sedimentological and geochemical data (XRF and ICP-MS data) of Laguna El Calvario (29°S; 3994 m a.s.l), a small and shallow Andean lake. Four main hydrological phases were established based on changes in the lithogenic and geochemical results associated with allochthonous runoff input and the subsequent response of the biological proxies. Between 2400 and 1400 cal yrs BP, wetter than present conditions occurred based on the intense weathering of the lake basin and the dominance of upper Andean vegetation. A decrease in moisture along with sub-centennial discrete wet pulses and lake-level changes occurred until ~800 cal yrs BP followed long-term stable climate conditions between 1850-1950 AD as suggested by a drop of vegetation productivity and low lake levels. Since 1950 AD to the present, a decline in moisture with a severe trend to drier conditions occurring in the last decades occurred as reflected by an upward vegetation belts displacement around Laguna El Calvario along with a turnover of diatom assemblages and high productivity in the water column.
Fil: Martel Cea, Alejandra J.. Comisión Nacional de Investigación Científica y Tecnológica. Centro de Investigación Regional. Centro de Estudios en Zonas Áridas; Chile. Universidad Austral de Chile; Chile
Fil: Maldonado, Antonio J.. Comisión Nacional de Investigación Científica y Tecnológica. Centro de Investigación Regional. Centro de Estudios en Zonas Áridas; Chile. Universidad Católica del Norte; Chile
Fil: de Porras, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Muñoz, Praxedes Natalia. Universidad Católica del Norte; Chile
Fil: Maidana, Nora Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
Fil: Massaferro, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Administración de Parques Nacionales. Parque Nacional "Nahuel Huapi"; Argentina
Fil: Schittek, Karsten. University of Cologne; Alemania
Materia
SEMIARID ANDES
CLIMATE CHANGE
MULTIPROXY ANALYSIS
LAKE SEDIMENTS
MOUNTAIN ECOSYSTEMS
LATE HOLOCENE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/251570
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)Martel Cea, Alejandra J.Maldonado, Antonio J.de Porras, Maria EugeniaMuñoz, Praxedes NataliaMaidana, Nora IreneMassaferro, JulietaSchittek, KarstenSEMIARID ANDESCLIMATE CHANGEMULTIPROXY ANALYSISLAKE SEDIMENTSMOUNTAIN ECOSYSTEMSLATE HOLOCENEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Mountain ecosystems located in the Andes cordillera of central Chile (29-35°S) have been strongly affected by the ongoing Mega Drought since 2010 impacting the snow cover, the surficial water resources (and thereby water storage) as well as the mountain biota and ecosystem services. Paleoenvironmental records in this part of the semiarid Andes are key to estimate the effects of past climate changes on local communities helping to forecast the ecological and biological responses under the aridification trend projected during the 21 st century. Here we present a 2400-years multiproxy paleoenvironmental reconstruction based on pollen, diatoms, chironomids, sedimentological and geochemical data (XRF and ICP-MS data) of Laguna El Calvario (29°S; 3994 m a.s.l), a small and shallow Andean lake. Four main hydrological phases were established based on changes in the lithogenic and geochemical results associated with allochthonous runoff input and the subsequent response of the biological proxies. Between 2400 and 1400 cal yrs BP, wetter than present conditions occurred based on the intense weathering of the lake basin and the dominance of upper Andean vegetation. A decrease in moisture along with sub-centennial discrete wet pulses and lake-level changes occurred until ~800 cal yrs BP followed long-term stable climate conditions between 1850-1950 AD as suggested by a drop of vegetation productivity and low lake levels. Since 1950 AD to the present, a decline in moisture with a severe trend to drier conditions occurring in the last decades occurred as reflected by an upward vegetation belts displacement around Laguna El Calvario along with a turnover of diatom assemblages and high productivity in the water column.Fil: Martel Cea, Alejandra J.. Comisión Nacional de Investigación Científica y Tecnológica. Centro de Investigación Regional. Centro de Estudios en Zonas Áridas; Chile. Universidad Austral de Chile; ChileFil: Maldonado, Antonio J.. Comisión Nacional de Investigación Científica y Tecnológica. Centro de Investigación Regional. Centro de Estudios en Zonas Áridas; Chile. Universidad Católica del Norte; ChileFil: de Porras, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Muñoz, Praxedes Natalia. Universidad Católica del Norte; ChileFil: Maidana, Nora Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; ArgentinaFil: Massaferro, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Administración de Parques Nacionales. Parque Nacional "Nahuel Huapi"; ArgentinaFil: Schittek, Karsten. University of Cologne; AlemaniaFrontiers Media2023-12-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/251570Martel Cea, Alejandra J.; Maldonado, Antonio J.; de Porras, Maria Eugenia; Muñoz, Praxedes Natalia; Maidana, Nora Irene; et al.; A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S); Frontiers Media; Frontiers in Ecology and Evolution; 11; 8-12-2023; 1-152296-701XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2023.1227020/fullinfo:eu-repo/semantics/altIdentifier/doi/10.3389/fevo.2023.1227020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:03:26Zoai:ri.conicet.gov.ar:11336/251570instacron: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 11:03:26.658CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
title A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
spellingShingle A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
Martel Cea, Alejandra J.
SEMIARID ANDES
CLIMATE CHANGE
MULTIPROXY ANALYSIS
LAKE SEDIMENTS
MOUNTAIN ECOSYSTEMS
LATE HOLOCENE
title_short A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
title_full A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
title_fullStr A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
title_full_unstemmed A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
title_sort A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S)
dc.creator.none.fl_str_mv Martel Cea, Alejandra J.
Maldonado, Antonio J.
de Porras, Maria Eugenia
Muñoz, Praxedes Natalia
Maidana, Nora Irene
Massaferro, Julieta
Schittek, Karsten
author Martel Cea, Alejandra J.
author_facet Martel Cea, Alejandra J.
Maldonado, Antonio J.
de Porras, Maria Eugenia
Muñoz, Praxedes Natalia
Maidana, Nora Irene
Massaferro, Julieta
Schittek, Karsten
author_role author
author2 Maldonado, Antonio J.
de Porras, Maria Eugenia
Muñoz, Praxedes Natalia
Maidana, Nora Irene
Massaferro, Julieta
Schittek, Karsten
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv SEMIARID ANDES
CLIMATE CHANGE
MULTIPROXY ANALYSIS
LAKE SEDIMENTS
MOUNTAIN ECOSYSTEMS
LATE HOLOCENE
topic SEMIARID ANDES
CLIMATE CHANGE
MULTIPROXY ANALYSIS
LAKE SEDIMENTS
MOUNTAIN ECOSYSTEMS
LATE HOLOCENE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Mountain ecosystems located in the Andes cordillera of central Chile (29-35°S) have been strongly affected by the ongoing Mega Drought since 2010 impacting the snow cover, the surficial water resources (and thereby water storage) as well as the mountain biota and ecosystem services. Paleoenvironmental records in this part of the semiarid Andes are key to estimate the effects of past climate changes on local communities helping to forecast the ecological and biological responses under the aridification trend projected during the 21 st century. Here we present a 2400-years multiproxy paleoenvironmental reconstruction based on pollen, diatoms, chironomids, sedimentological and geochemical data (XRF and ICP-MS data) of Laguna El Calvario (29°S; 3994 m a.s.l), a small and shallow Andean lake. Four main hydrological phases were established based on changes in the lithogenic and geochemical results associated with allochthonous runoff input and the subsequent response of the biological proxies. Between 2400 and 1400 cal yrs BP, wetter than present conditions occurred based on the intense weathering of the lake basin and the dominance of upper Andean vegetation. A decrease in moisture along with sub-centennial discrete wet pulses and lake-level changes occurred until ~800 cal yrs BP followed long-term stable climate conditions between 1850-1950 AD as suggested by a drop of vegetation productivity and low lake levels. Since 1950 AD to the present, a decline in moisture with a severe trend to drier conditions occurring in the last decades occurred as reflected by an upward vegetation belts displacement around Laguna El Calvario along with a turnover of diatom assemblages and high productivity in the water column.
Fil: Martel Cea, Alejandra J.. Comisión Nacional de Investigación Científica y Tecnológica. Centro de Investigación Regional. Centro de Estudios en Zonas Áridas; Chile. Universidad Austral de Chile; Chile
Fil: Maldonado, Antonio J.. Comisión Nacional de Investigación Científica y Tecnológica. Centro de Investigación Regional. Centro de Estudios en Zonas Áridas; Chile. Universidad Católica del Norte; Chile
Fil: de Porras, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Muñoz, Praxedes Natalia. Universidad Católica del Norte; Chile
Fil: Maidana, Nora Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
Fil: Massaferro, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Administración de Parques Nacionales. Parque Nacional "Nahuel Huapi"; Argentina
Fil: Schittek, Karsten. University of Cologne; Alemania
description Mountain ecosystems located in the Andes cordillera of central Chile (29-35°S) have been strongly affected by the ongoing Mega Drought since 2010 impacting the snow cover, the surficial water resources (and thereby water storage) as well as the mountain biota and ecosystem services. Paleoenvironmental records in this part of the semiarid Andes are key to estimate the effects of past climate changes on local communities helping to forecast the ecological and biological responses under the aridification trend projected during the 21 st century. Here we present a 2400-years multiproxy paleoenvironmental reconstruction based on pollen, diatoms, chironomids, sedimentological and geochemical data (XRF and ICP-MS data) of Laguna El Calvario (29°S; 3994 m a.s.l), a small and shallow Andean lake. Four main hydrological phases were established based on changes in the lithogenic and geochemical results associated with allochthonous runoff input and the subsequent response of the biological proxies. Between 2400 and 1400 cal yrs BP, wetter than present conditions occurred based on the intense weathering of the lake basin and the dominance of upper Andean vegetation. A decrease in moisture along with sub-centennial discrete wet pulses and lake-level changes occurred until ~800 cal yrs BP followed long-term stable climate conditions between 1850-1950 AD as suggested by a drop of vegetation productivity and low lake levels. Since 1950 AD to the present, a decline in moisture with a severe trend to drier conditions occurring in the last decades occurred as reflected by an upward vegetation belts displacement around Laguna El Calvario along with a turnover of diatom assemblages and high productivity in the water column.
publishDate 2023
dc.date.none.fl_str_mv 2023-12-08
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/11336/251570
Martel Cea, Alejandra J.; Maldonado, Antonio J.; de Porras, Maria Eugenia; Muñoz, Praxedes Natalia; Maidana, Nora Irene; et al.; A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S); Frontiers Media; Frontiers in Ecology and Evolution; 11; 8-12-2023; 1-15
2296-701X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/251570
identifier_str_mv Martel Cea, Alejandra J.; Maldonado, Antonio J.; de Porras, Maria Eugenia; Muñoz, Praxedes Natalia; Maidana, Nora Irene; et al.; A multiproxy approach to reconstruct the Late Holocene environmental dynamics of the semiarid Andes of central Chile (29°S); Frontiers Media; Frontiers in Ecology and Evolution; 11; 8-12-2023; 1-15
2296-701X
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://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2023.1227020/full
info:eu-repo/semantics/altIdentifier/doi/10.3389/fevo.2023.1227020
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
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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