Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records

Autores
Sottile, Gonzalo David; Bamonte, Florencia Paula; Mancini, M. V.; Bianchi, Maria Martha
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ecosystem fire regimes are a consequence of interactions among fuels and climate. The reconstruction of past fire regimes is of great importance for studying past climate changes and controls. The aim of this study is to compare two charcoal and pollen records from the Nothofagus forest-grass steppe ecotone (50°S) and the grass steppe (49°). We compare fire regime responses to local vegetation changes, and inferred variation on climate conditions between 49° and 52°S during the Holocene. Cerro Frías and La Tercera charcoal records seem to be sensitive to centennial and millennial timescales of vegetation and climate variability inferred for southern Patagonia. During the Pleistocene–Holocene transition and during the middle Holocene, forest patchiness provided fuel vertical and horizontal continuity favoring fire activity. In contrast, in steppe environments high cover of shrubs favored grass patchiness, impeding fire spread. Higher pollen richness and variability through time seem to be related to higher vegetation patchiness. Past fire regime variability at the eastern side of the Andes has been closely related to westerly moisture influence between 52° and 48°S. Southern latitudes have been influenced by polar air mass intrusions to the continent during the last 5000 cal. yr BP.
Fil: Sottile, Gonzalo David. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bamonte, Florencia Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; Argentina
Fil: Mancini, M. V.. Universidad Nacional de Mar del Plata; Argentina
Fil: Bianchi, Maria Martha. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
INCENDIOS
ESTEPA
NOTHOFAGUS
POLEN
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/236536
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire recordsSottile, Gonzalo DavidBamonte, Florencia PaulaMancini, M. V.Bianchi, Maria MarthaINCENDIOSESTEPANOTHOFAGUSPOLENhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Ecosystem fire regimes are a consequence of interactions among fuels and climate. The reconstruction of past fire regimes is of great importance for studying past climate changes and controls. The aim of this study is to compare two charcoal and pollen records from the Nothofagus forest-grass steppe ecotone (50°S) and the grass steppe (49°). We compare fire regime responses to local vegetation changes, and inferred variation on climate conditions between 49° and 52°S during the Holocene. Cerro Frías and La Tercera charcoal records seem to be sensitive to centennial and millennial timescales of vegetation and climate variability inferred for southern Patagonia. During the Pleistocene–Holocene transition and during the middle Holocene, forest patchiness provided fuel vertical and horizontal continuity favoring fire activity. In contrast, in steppe environments high cover of shrubs favored grass patchiness, impeding fire spread. Higher pollen richness and variability through time seem to be related to higher vegetation patchiness. Past fire regime variability at the eastern side of the Andes has been closely related to westerly moisture influence between 52° and 48°S. Southern latitudes have been influenced by polar air mass intrusions to the continent during the last 5000 cal. yr BP.Fil: Sottile, Gonzalo David. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Bamonte, Florencia Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; ArgentinaFil: Mancini, M. V.. Universidad Nacional de Mar del Plata; ArgentinaFil: Bianchi, Maria Martha. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaSage Publications Ltd2012-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/236536Sottile, Gonzalo David; Bamonte, Florencia Paula; Mancini, M. V.; Bianchi, Maria Martha; Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 3-2012; 1309-13220959-6836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.sagepub.com/doi/10.1177/0959683611405082info:eu-repo/semantics/altIdentifier/doi/10.1177/0959683611405082info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:39Zoai:ri.conicet.gov.ar:11336/236536instacron: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 09:58:40.216CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
title Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
spellingShingle Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
Sottile, Gonzalo David
INCENDIOS
ESTEPA
NOTHOFAGUS
POLEN
title_short Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
title_full Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
title_fullStr Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
title_full_unstemmed Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
title_sort Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records
dc.creator.none.fl_str_mv Sottile, Gonzalo David
Bamonte, Florencia Paula
Mancini, M. V.
Bianchi, Maria Martha
author Sottile, Gonzalo David
author_facet Sottile, Gonzalo David
Bamonte, Florencia Paula
Mancini, M. V.
Bianchi, Maria Martha
author_role author
author2 Bamonte, Florencia Paula
Mancini, M. V.
Bianchi, Maria Martha
author2_role author
author
author
dc.subject.none.fl_str_mv INCENDIOS
ESTEPA
NOTHOFAGUS
POLEN
topic INCENDIOS
ESTEPA
NOTHOFAGUS
POLEN
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Ecosystem fire regimes are a consequence of interactions among fuels and climate. The reconstruction of past fire regimes is of great importance for studying past climate changes and controls. The aim of this study is to compare two charcoal and pollen records from the Nothofagus forest-grass steppe ecotone (50°S) and the grass steppe (49°). We compare fire regime responses to local vegetation changes, and inferred variation on climate conditions between 49° and 52°S during the Holocene. Cerro Frías and La Tercera charcoal records seem to be sensitive to centennial and millennial timescales of vegetation and climate variability inferred for southern Patagonia. During the Pleistocene–Holocene transition and during the middle Holocene, forest patchiness provided fuel vertical and horizontal continuity favoring fire activity. In contrast, in steppe environments high cover of shrubs favored grass patchiness, impeding fire spread. Higher pollen richness and variability through time seem to be related to higher vegetation patchiness. Past fire regime variability at the eastern side of the Andes has been closely related to westerly moisture influence between 52° and 48°S. Southern latitudes have been influenced by polar air mass intrusions to the continent during the last 5000 cal. yr BP.
Fil: Sottile, Gonzalo David. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Bamonte, Florencia Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; Argentina
Fil: Mancini, M. V.. Universidad Nacional de Mar del Plata; Argentina
Fil: Bianchi, Maria Martha. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Ecosystem fire regimes are a consequence of interactions among fuels and climate. The reconstruction of past fire regimes is of great importance for studying past climate changes and controls. The aim of this study is to compare two charcoal and pollen records from the Nothofagus forest-grass steppe ecotone (50°S) and the grass steppe (49°). We compare fire regime responses to local vegetation changes, and inferred variation on climate conditions between 49° and 52°S during the Holocene. Cerro Frías and La Tercera charcoal records seem to be sensitive to centennial and millennial timescales of vegetation and climate variability inferred for southern Patagonia. During the Pleistocene–Holocene transition and during the middle Holocene, forest patchiness provided fuel vertical and horizontal continuity favoring fire activity. In contrast, in steppe environments high cover of shrubs favored grass patchiness, impeding fire spread. Higher pollen richness and variability through time seem to be related to higher vegetation patchiness. Past fire regime variability at the eastern side of the Andes has been closely related to westerly moisture influence between 52° and 48°S. Southern latitudes have been influenced by polar air mass intrusions to the continent during the last 5000 cal. yr BP.
publishDate 2012
dc.date.none.fl_str_mv 2012-03
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/11336/236536
Sottile, Gonzalo David; Bamonte, Florencia Paula; Mancini, M. V.; Bianchi, Maria Martha; Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 3-2012; 1309-1322
0959-6836
CONICET Digital
CONICET
url http://hdl.handle.net/11336/236536
identifier_str_mv Sottile, Gonzalo David; Bamonte, Florencia Paula; Mancini, M. V.; Bianchi, Maria Martha; Insights into Holocene vegetation and climate changes at the southeast of the Andes: Nothofagus forest and Patagonian steppe fire records; Sage Publications Ltd; Holocene (Seven Oaks); 22; 11; 3-2012; 1309-1322
0959-6836
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://journals.sagepub.com/doi/10.1177/0959683611405082
info:eu-repo/semantics/altIdentifier/doi/10.1177/0959683611405082
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 Sage Publications Ltd
publisher.none.fl_str_mv Sage Publications 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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score 13.13397

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