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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/251570
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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 Técnicas2025-09-29T09:35:23Zoai: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:34982025-09-29 09:35:23.969CONICET 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/ |
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application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Frontiers Media |
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Frontiers Media |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |