Fossil leaves from the last interglacial in Central-Southern Chile

The continental equivalent of the most temperate part of the last interglacial (MIS 5e) is called Valdivia in southern Chile. It is characterised by extensive terraces mostly composed of detrital sediments and pyroclastic flows. Peat deposits are found within these terraces. In this paper we analyze...

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Authors: Astorga, G., Pino, M.
Format: article
Publication Date:2011
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:85177
Online Access:https://ddd.uab.cat/record/85177
https://dx.doi.org/urn:doi:10.1344/105.000001649
Access Level:Open access
Keyword:Interglacial
Flora
Leaves
Chile
South America
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spelling Fossil leaves from the last interglacial in Central-Southern Chileinferences regarding the vegetation and paleoclimateAstorga, G.Pino, M.InterglacialFloraLeavesChileSouth AmericaThe continental equivalent of the most temperate part of the last interglacial (MIS 5e) is called Valdivia in southern Chile. It is characterised by extensive terraces mostly composed of detrital sediments and pyroclastic flows. Peat deposits are found within these terraces. In this paper we analyze the leaf architecture of fossil leaves collected from a peat layer at the base of the Mancera interglacial sequence, on Mancera Island, off the coast of Valdivia (near 40ºS). The stratigraphic position, the presence of in situ logs and the composition of the plant species found therein suggest that the accumulation of plant remains occurred in a continental, palustrine environment. The plant morphotypes reveal an unusual mixture of species belonging to the cool temperate North Patagonian Forest and to the more thermophilous vegetation, represented by Valdivian Rain Forest. Both types of forest are currently found in the Coastal Range at different altitudes. The Mancera flora associations suggest a gradual response of the vegetation to the glacial-interglacial transition, and indicate that this coastal area could have been a refuge during the penultimate glacial period. A similar situation has been described for the last glaciation-Holocene transition. 22011-01-0120112011-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/85177https://dx.doi.org/urn:doi:10.1344/105.000001649reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.https://creativecommons.org/licenses/by-sa/3.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:851772026-06-06T12:50:31Z
dc.title.none.fl_str_mv Fossil leaves from the last interglacial in Central-Southern Chile
inferences regarding the vegetation and paleoclimate
title Fossil leaves from the last interglacial in Central-Southern Chile
spellingShingle Fossil leaves from the last interglacial in Central-Southern Chile
Astorga, G.
Interglacial
Flora
Leaves
Chile
South America
title_short Fossil leaves from the last interglacial in Central-Southern Chile
title_full Fossil leaves from the last interglacial in Central-Southern Chile
title_fullStr Fossil leaves from the last interglacial in Central-Southern Chile
title_full_unstemmed Fossil leaves from the last interglacial in Central-Southern Chile
title_sort Fossil leaves from the last interglacial in Central-Southern Chile
dc.creator.none.fl_str_mv Astorga, G.
Pino, M.
author Astorga, G.
author_facet Astorga, G.
Pino, M.
author_role author
author2 Pino, M.
author2_role author
dc.subject.none.fl_str_mv Interglacial
Flora
Leaves
Chile
South America
topic Interglacial
Flora
Leaves
Chile
South America
description The continental equivalent of the most temperate part of the last interglacial (MIS 5e) is called Valdivia in southern Chile. It is characterised by extensive terraces mostly composed of detrital sediments and pyroclastic flows. Peat deposits are found within these terraces. In this paper we analyze the leaf architecture of fossil leaves collected from a peat layer at the base of the Mancera interglacial sequence, on Mancera Island, off the coast of Valdivia (near 40ºS). The stratigraphic position, the presence of in situ logs and the composition of the plant species found therein suggest that the accumulation of plant remains occurred in a continental, palustrine environment. The plant morphotypes reveal an unusual mixture of species belonging to the cool temperate North Patagonian Forest and to the more thermophilous vegetation, represented by Valdivian Rain Forest. Both types of forest are currently found in the Coastal Range at different altitudes. The Mancera flora associations suggest a gradual response of the vegetation to the glacial-interglacial transition, and indicate that this coastal area could have been a refuge during the penultimate glacial period. A similar situation has been described for the last glaciation-Holocene transition.
publishDate 2011
dc.date.none.fl_str_mv 2
2011-01-01
2011
2011-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/85177
https://dx.doi.org/urn:doi:10.1344/105.000001649
url https://ddd.uab.cat/record/85177
https://dx.doi.org/urn:doi:10.1344/105.000001649
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
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instname_str Universitat Autònoma de Barcelona
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