Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America

Autores
Waldmann, Nicolás; Borromei, Ana Maria; Recasens, Cristina; Olivera, Daniela Elizabeth; Martinez, Marcelo Adrian; Maidana, Nora Irene; Ariztegui, Daniel; Austin, James; Anselmetti, Flavio S.; Moy, Christopher M.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This study presents new paleoenvironmental data obtained from sedimentary cores from Lago Fagnano, an elongated lake located at 54°S in southernmost South America. Data from palynomorphs (pollen, spores and algae) and associated palynofacies as well as from diatom taxa retrieved from these cores compared with other regional proxies contribute to evaluate the similarities and differences in the climate patterns based on different proxies from southernmost Patagonia. The pollen analysis reveals that a grass steppe environment existed during the early Holocene (11,300-~. 8000. cal. a. BP) followed by a major vegetation change characterized by development of forest-steppe ecotone communities between ~. 8000 and ~. 6500. cal. a. BP, under more humid conditions. Between ~. 6500 and ~. 4000. cal. a. BP, expansion and colonization by Nothofagus forests reflect an increase in effective moisture levels, while openness in the forest communities characterizes the region after ~. 1100. cal. a. BP. The palynological organic matter combined with the algal content reflects hydrological changes occurring in the lake and its nutrient status, probably in close relation with past climate oscillations. All these past ecological changes are closely related to oscillations in precipitation and temperature as a response to the variations in the latitudinal position and/or strength of the Southern Westerlies wind belt during the Holocene.
Fil: Waldmann, Nicolás. Universidad de Haifa; Israel
Fil: Borromei, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Recasens, Cristina. Universidad de Ginebra. Facultad de Ciencias. Sección de Ciencias de la Tierra; Suiza. Columbia University. Lamont-Doherty Earth Observatory; Estados Unidos
Fil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Martinez, Marcelo Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Maidana, Nora Irene. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental. Laboratorio de Diatomeas Continentales; Argentina. 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
Fil: Ariztegui, Daniel. Universidad de Ginebra. Facultad de Ciencias. Sección de Ciencias de la Tierra; Suiza
Fil: Austin, James. University of Texas at Austin; Estados Unidos
Fil: Anselmetti, Flavio S.. University of Bern; Suiza
Fil: Moy, Christopher M.. University of Otago; Nueva Zelanda
Materia
Lacustrine Sediments
Limnogeology
Multi-Proxy Analyses
Paleoenvironment And Paleoclimate Reconstruction
Palynology
Southern Hemisphere Westerlies
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/37328
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South AmericaWaldmann, NicolásBorromei, Ana MariaRecasens, CristinaOlivera, Daniela ElizabethMartinez, Marcelo AdrianMaidana, Nora IreneAriztegui, DanielAustin, JamesAnselmetti, Flavio S.Moy, Christopher M.Lacustrine SedimentsLimnogeologyMulti-Proxy AnalysesPaleoenvironment And Paleoclimate ReconstructionPalynologySouthern Hemisphere Westerlieshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This study presents new paleoenvironmental data obtained from sedimentary cores from Lago Fagnano, an elongated lake located at 54°S in southernmost South America. Data from palynomorphs (pollen, spores and algae) and associated palynofacies as well as from diatom taxa retrieved from these cores compared with other regional proxies contribute to evaluate the similarities and differences in the climate patterns based on different proxies from southernmost Patagonia. The pollen analysis reveals that a grass steppe environment existed during the early Holocene (11,300-~. 8000. cal. a. BP) followed by a major vegetation change characterized by development of forest-steppe ecotone communities between ~. 8000 and ~. 6500. cal. a. BP, under more humid conditions. Between ~. 6500 and ~. 4000. cal. a. BP, expansion and colonization by Nothofagus forests reflect an increase in effective moisture levels, while openness in the forest communities characterizes the region after ~. 1100. cal. a. BP. The palynological organic matter combined with the algal content reflects hydrological changes occurring in the lake and its nutrient status, probably in close relation with past climate oscillations. All these past ecological changes are closely related to oscillations in precipitation and temperature as a response to the variations in the latitudinal position and/or strength of the Southern Westerlies wind belt during the Holocene.Fil: Waldmann, Nicolás. Universidad de Haifa; IsraelFil: Borromei, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Recasens, Cristina. Universidad de Ginebra. Facultad de Ciencias. Sección de Ciencias de la Tierra; Suiza. Columbia University. Lamont-Doherty Earth Observatory; Estados UnidosFil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Martinez, Marcelo Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Maidana, Nora Irene. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental. Laboratorio de Diatomeas Continentales; Argentina. 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; ArgentinaFil: Ariztegui, Daniel. Universidad de Ginebra. Facultad de Ciencias. Sección de Ciencias de la Tierra; SuizaFil: Austin, James. University of Texas at Austin; Estados UnidosFil: Anselmetti, Flavio S.. University of Bern; SuizaFil: Moy, Christopher M.. University of Otago; Nueva ZelandaElsevier Science2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37328Waldmann, Nicolás; Borromei, Ana Maria; Recasens, Cristina; Olivera, Daniela Elizabeth; Martinez, Marcelo Adrian; et al.; Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 399; 4-2014; 294-3090031-0182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2014.01.023info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018214000339info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:27Zoai:ri.conicet.gov.ar:11336/37328instacron: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 09:36:27.972CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
title Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
spellingShingle Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
Waldmann, Nicolás
Lacustrine Sediments
Limnogeology
Multi-Proxy Analyses
Paleoenvironment And Paleoclimate Reconstruction
Palynology
Southern Hemisphere Westerlies
title_short Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
title_full Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
title_fullStr Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
title_full_unstemmed Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
title_sort Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America
dc.creator.none.fl_str_mv Waldmann, Nicolás
Borromei, Ana Maria
Recasens, Cristina
Olivera, Daniela Elizabeth
Martinez, Marcelo Adrian
Maidana, Nora Irene
Ariztegui, Daniel
Austin, James
Anselmetti, Flavio S.
Moy, Christopher M.
author Waldmann, Nicolás
author_facet Waldmann, Nicolás
Borromei, Ana Maria
Recasens, Cristina
Olivera, Daniela Elizabeth
Martinez, Marcelo Adrian
Maidana, Nora Irene
Ariztegui, Daniel
Austin, James
Anselmetti, Flavio S.
Moy, Christopher M.
author_role author
author2 Borromei, Ana Maria
Recasens, Cristina
Olivera, Daniela Elizabeth
Martinez, Marcelo Adrian
Maidana, Nora Irene
Ariztegui, Daniel
Austin, James
Anselmetti, Flavio S.
Moy, Christopher M.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Lacustrine Sediments
Limnogeology
Multi-Proxy Analyses
Paleoenvironment And Paleoclimate Reconstruction
Palynology
Southern Hemisphere Westerlies
topic Lacustrine Sediments
Limnogeology
Multi-Proxy Analyses
Paleoenvironment And Paleoclimate Reconstruction
Palynology
Southern Hemisphere Westerlies
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This study presents new paleoenvironmental data obtained from sedimentary cores from Lago Fagnano, an elongated lake located at 54°S in southernmost South America. Data from palynomorphs (pollen, spores and algae) and associated palynofacies as well as from diatom taxa retrieved from these cores compared with other regional proxies contribute to evaluate the similarities and differences in the climate patterns based on different proxies from southernmost Patagonia. The pollen analysis reveals that a grass steppe environment existed during the early Holocene (11,300-~. 8000. cal. a. BP) followed by a major vegetation change characterized by development of forest-steppe ecotone communities between ~. 8000 and ~. 6500. cal. a. BP, under more humid conditions. Between ~. 6500 and ~. 4000. cal. a. BP, expansion and colonization by Nothofagus forests reflect an increase in effective moisture levels, while openness in the forest communities characterizes the region after ~. 1100. cal. a. BP. The palynological organic matter combined with the algal content reflects hydrological changes occurring in the lake and its nutrient status, probably in close relation with past climate oscillations. All these past ecological changes are closely related to oscillations in precipitation and temperature as a response to the variations in the latitudinal position and/or strength of the Southern Westerlies wind belt during the Holocene.
Fil: Waldmann, Nicolás. Universidad de Haifa; Israel
Fil: Borromei, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Recasens, Cristina. Universidad de Ginebra. Facultad de Ciencias. Sección de Ciencias de la Tierra; Suiza. Columbia University. Lamont-Doherty Earth Observatory; Estados Unidos
Fil: Olivera, Daniela Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Martinez, Marcelo Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Maidana, Nora Irene. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental. Laboratorio de Diatomeas Continentales; Argentina. 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
Fil: Ariztegui, Daniel. Universidad de Ginebra. Facultad de Ciencias. Sección de Ciencias de la Tierra; Suiza
Fil: Austin, James. University of Texas at Austin; Estados Unidos
Fil: Anselmetti, Flavio S.. University of Bern; Suiza
Fil: Moy, Christopher M.. University of Otago; Nueva Zelanda
description This study presents new paleoenvironmental data obtained from sedimentary cores from Lago Fagnano, an elongated lake located at 54°S in southernmost South America. Data from palynomorphs (pollen, spores and algae) and associated palynofacies as well as from diatom taxa retrieved from these cores compared with other regional proxies contribute to evaluate the similarities and differences in the climate patterns based on different proxies from southernmost Patagonia. The pollen analysis reveals that a grass steppe environment existed during the early Holocene (11,300-~. 8000. cal. a. BP) followed by a major vegetation change characterized by development of forest-steppe ecotone communities between ~. 8000 and ~. 6500. cal. a. BP, under more humid conditions. Between ~. 6500 and ~. 4000. cal. a. BP, expansion and colonization by Nothofagus forests reflect an increase in effective moisture levels, while openness in the forest communities characterizes the region after ~. 1100. cal. a. BP. The palynological organic matter combined with the algal content reflects hydrological changes occurring in the lake and its nutrient status, probably in close relation with past climate oscillations. All these past ecological changes are closely related to oscillations in precipitation and temperature as a response to the variations in the latitudinal position and/or strength of the Southern Westerlies wind belt during the Holocene.
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/11336/37328
Waldmann, Nicolás; Borromei, Ana Maria; Recasens, Cristina; Olivera, Daniela Elizabeth; Martinez, Marcelo Adrian; et al.; Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 399; 4-2014; 294-309
0031-0182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37328
identifier_str_mv Waldmann, Nicolás; Borromei, Ana Maria; Recasens, Cristina; Olivera, Daniela Elizabeth; Martinez, Marcelo Adrian; et al.; Integrated reconstruction of Holocene millennial-scale environmental changes in Tierra del Fuego, southernmost South America; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 399; 4-2014; 294-309
0031-0182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2014.01.023
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018214000339
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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