Postglacial history of the Patagonian forest/steppe ecotone (41–43°S)
- Autores
- Iglesias, Virginia; Whitlock, Cathy; Markgraf, Vera; Bianchi, Maria Martha
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Patagonian vegetation has dramatically changed in composition and distribution over the last 23,000 years. Although the vegetation history has been inferred from individual pollen records, the regional patterns and drivers of vegetation development are poorly understood. High resolution pollen and charcoal data from eleven sites located along the eastern flanks of the Patagonian Andes (41–43°S) were examined to reconstruct the Lateglacial and Holocene vegetation and fire history of steppe/forest ecotone and separate the relative influence of climatic versus non-climatic factors in shaping the patterns of ecological change. Pollen data indicate that, as the Lateglacial climate became progressively wetter, the initial steppe vegetation was replaced by open forest of Nothofagus in the Lateglacial and early Holocene periods, and by closed forest in the late Holocene. Fire activity was lowest during the Lateglacial/early-Holocene transition and gradually increased through the Holocene. Prior to ca 5000 cal yr BP, the conifer Austrocedrus chilensis possibly persisted in isolated populations along the eastern boundary of its modern distribution. Cooler/more humid conditions after ca 5000 cal yr BP allowed the development of the modern mixed Nothofagus–Austrocedrus forest. The paleoenvironmental record points to the sensitivity of the forest/steppe ecotone in the past, not only to climate but also to complex environmental feedbacks that amplified the effects of climate change.
Fil: Iglesias, Virginia. State University of Montana; Estados Unidos
Fil: Whitlock, Cathy. State University of Montana; Estados Unidos
Fil: Markgraf, Vera. State University of Colorado Boulder; Estados Unidos. University of Arizona; Estados Unidos
Fil: Bianchi, Maria Martha. Secretaría de Cultura de la Nación. Dirección Nacional de Cultura y Museos. Instituto Nacional de Antropología y Pensamiento Latinoamericano; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina - Materia
-
Vegetation History
Fire History
Patagonia
Nothofagus
Austrocedrus
Pollen
Holocene
Isopolls - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/35906
Ver los metadatos del registro completo
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Postglacial history of the Patagonian forest/steppe ecotone (41–43°S)Iglesias, VirginiaWhitlock, CathyMarkgraf, VeraBianchi, Maria MarthaVegetation HistoryFire HistoryPatagoniaNothofagusAustrocedrusPollenHoloceneIsopollshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Patagonian vegetation has dramatically changed in composition and distribution over the last 23,000 years. Although the vegetation history has been inferred from individual pollen records, the regional patterns and drivers of vegetation development are poorly understood. High resolution pollen and charcoal data from eleven sites located along the eastern flanks of the Patagonian Andes (41–43°S) were examined to reconstruct the Lateglacial and Holocene vegetation and fire history of steppe/forest ecotone and separate the relative influence of climatic versus non-climatic factors in shaping the patterns of ecological change. Pollen data indicate that, as the Lateglacial climate became progressively wetter, the initial steppe vegetation was replaced by open forest of Nothofagus in the Lateglacial and early Holocene periods, and by closed forest in the late Holocene. Fire activity was lowest during the Lateglacial/early-Holocene transition and gradually increased through the Holocene. Prior to ca 5000 cal yr BP, the conifer Austrocedrus chilensis possibly persisted in isolated populations along the eastern boundary of its modern distribution. Cooler/more humid conditions after ca 5000 cal yr BP allowed the development of the modern mixed Nothofagus–Austrocedrus forest. The paleoenvironmental record points to the sensitivity of the forest/steppe ecotone in the past, not only to climate but also to complex environmental feedbacks that amplified the effects of climate change.Fil: Iglesias, Virginia. State University of Montana; Estados UnidosFil: Whitlock, Cathy. State University of Montana; Estados UnidosFil: Markgraf, Vera. State University of Colorado Boulder; Estados Unidos. University of Arizona; Estados UnidosFil: Bianchi, Maria Martha. Secretaría de Cultura de la Nación. Dirección Nacional de Cultura y Museos. Instituto Nacional de Antropología y Pensamiento Latinoamericano; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaPergamon-Elsevier Science Ltd.2014-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/35906Iglesias, Virginia; Whitlock, Cathy; Markgraf, Vera; Bianchi, Maria Martha; Postglacial history of the Patagonian forest/steppe ecotone (41–43°S); Pergamon-Elsevier Science Ltd.; Quaternary Science Reviews; 94; 10-2014; 120-1350277-3791CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2014.04.014info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0277379114001309info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:19:04Zoai:ri.conicet.gov.ar:11336/35906instacron: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 10:19:05.238CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) |
title |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) |
spellingShingle |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) Iglesias, Virginia Vegetation History Fire History Patagonia Nothofagus Austrocedrus Pollen Holocene Isopolls |
title_short |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) |
title_full |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) |
title_fullStr |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) |
title_full_unstemmed |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) |
title_sort |
Postglacial history of the Patagonian forest/steppe ecotone (41–43°S) |
dc.creator.none.fl_str_mv |
Iglesias, Virginia Whitlock, Cathy Markgraf, Vera Bianchi, Maria Martha |
author |
Iglesias, Virginia |
author_facet |
Iglesias, Virginia Whitlock, Cathy Markgraf, Vera Bianchi, Maria Martha |
author_role |
author |
author2 |
Whitlock, Cathy Markgraf, Vera Bianchi, Maria Martha |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Vegetation History Fire History Patagonia Nothofagus Austrocedrus Pollen Holocene Isopolls |
topic |
Vegetation History Fire History Patagonia Nothofagus Austrocedrus Pollen Holocene Isopolls |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Patagonian vegetation has dramatically changed in composition and distribution over the last 23,000 years. Although the vegetation history has been inferred from individual pollen records, the regional patterns and drivers of vegetation development are poorly understood. High resolution pollen and charcoal data from eleven sites located along the eastern flanks of the Patagonian Andes (41–43°S) were examined to reconstruct the Lateglacial and Holocene vegetation and fire history of steppe/forest ecotone and separate the relative influence of climatic versus non-climatic factors in shaping the patterns of ecological change. Pollen data indicate that, as the Lateglacial climate became progressively wetter, the initial steppe vegetation was replaced by open forest of Nothofagus in the Lateglacial and early Holocene periods, and by closed forest in the late Holocene. Fire activity was lowest during the Lateglacial/early-Holocene transition and gradually increased through the Holocene. Prior to ca 5000 cal yr BP, the conifer Austrocedrus chilensis possibly persisted in isolated populations along the eastern boundary of its modern distribution. Cooler/more humid conditions after ca 5000 cal yr BP allowed the development of the modern mixed Nothofagus–Austrocedrus forest. The paleoenvironmental record points to the sensitivity of the forest/steppe ecotone in the past, not only to climate but also to complex environmental feedbacks that amplified the effects of climate change. Fil: Iglesias, Virginia. State University of Montana; Estados Unidos Fil: Whitlock, Cathy. State University of Montana; Estados Unidos Fil: Markgraf, Vera. State University of Colorado Boulder; Estados Unidos. University of Arizona; Estados Unidos Fil: Bianchi, Maria Martha. Secretaría de Cultura de la Nación. Dirección Nacional de Cultura y Museos. Instituto Nacional de Antropología y Pensamiento Latinoamericano; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina |
description |
Patagonian vegetation has dramatically changed in composition and distribution over the last 23,000 years. Although the vegetation history has been inferred from individual pollen records, the regional patterns and drivers of vegetation development are poorly understood. High resolution pollen and charcoal data from eleven sites located along the eastern flanks of the Patagonian Andes (41–43°S) were examined to reconstruct the Lateglacial and Holocene vegetation and fire history of steppe/forest ecotone and separate the relative influence of climatic versus non-climatic factors in shaping the patterns of ecological change. Pollen data indicate that, as the Lateglacial climate became progressively wetter, the initial steppe vegetation was replaced by open forest of Nothofagus in the Lateglacial and early Holocene periods, and by closed forest in the late Holocene. Fire activity was lowest during the Lateglacial/early-Holocene transition and gradually increased through the Holocene. Prior to ca 5000 cal yr BP, the conifer Austrocedrus chilensis possibly persisted in isolated populations along the eastern boundary of its modern distribution. Cooler/more humid conditions after ca 5000 cal yr BP allowed the development of the modern mixed Nothofagus–Austrocedrus forest. The paleoenvironmental record points to the sensitivity of the forest/steppe ecotone in the past, not only to climate but also to complex environmental feedbacks that amplified the effects of climate change. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-10 |
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/11336/35906 Iglesias, Virginia; Whitlock, Cathy; Markgraf, Vera; Bianchi, Maria Martha; Postglacial history of the Patagonian forest/steppe ecotone (41–43°S); Pergamon-Elsevier Science Ltd.; Quaternary Science Reviews; 94; 10-2014; 120-135 0277-3791 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/35906 |
identifier_str_mv |
Iglesias, Virginia; Whitlock, Cathy; Markgraf, Vera; Bianchi, Maria Martha; Postglacial history of the Patagonian forest/steppe ecotone (41–43°S); Pergamon-Elsevier Science Ltd.; Quaternary Science Reviews; 94; 10-2014; 120-135 0277-3791 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.quascirev.2014.04.014 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0277379114001309 |
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 |
Pergamon-Elsevier Science Ltd. |
publisher.none.fl_str_mv |
Pergamon-Elsevier Science 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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1844614159482748928 |
score |
13.070432 |