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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/37328
Ver los metadatos del registro completo
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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 Técnicas2025-09-03T09:45:44Zoai: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:34982025-09-03 09:45:44.941CONICET 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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1842268750621966336 |
score |
13.13397 |