Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil

Bibliographic Details
Main Author: Ledru, Marie-Pierre
Publication Date: 2001
Other Authors: Cordeiro, Renato Campello, Dominguez, José Maria Landim, Martin, Louis, Mourguiart, Philippe, Sifeddine, Abdelfetah, Turcq, Bruno
Format: Article
Language: eng
Source: Repositório Institucional da UFBA
Download full: http://www.repositorio.ufba.br/ri/handle/ri/7789
Summary: Texto completo: acesso restrito. p.47–56
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spelling Ledru, Marie-PierreCordeiro, Renato CampelloDominguez, José Maria LandimMartin, LouisMourguiart, PhilippeSifeddine, AbdelfetahTurcq, BrunoLedru, Marie-PierreCordeiro, Renato CampelloDominguez, José Maria LandimMartin, LouisMourguiart, PhilippeSifeddine, AbdelfetahTurcq, Bruno2013-01-10T13:05:08Z20010033-5894http://www.repositorio.ufba.br/ri/handle/ri/7789v. 55, n.1Texto completo: acesso restrito. p.47–56New pollen data from a core at Lagoa do Caçó, Maranhão state, Brazil (2°58′S 43°25′W; 120 m elevation), show higher frequencies of Podocarpus at the end of the Pleistocene than today. The increase in Podocarpus, which follows the successive increase of various pioneer species such as Didymopanax, Melastomataceae/Combretaceae, and Cecropia, implies a progressive late-glacial increase of moist and cool climatic conditions. A comparable increase in Podocarpus is found in other lowland records in Amazonia. A review of published pollen data from Amazonia suggests that the moisture source was from the southeast. By contrast, present-day moisture comes from the tropical Atlantic and from the Amazon basin, with its convective precipitation. The likely cause for the southeastern moisture source between ca. 15,000 and 14,500 cal yr B.P. was enhanced polar (Antarctic) advection that reached low latitudes and maintained year-round the meteorological equator in its austral-winter position at northern latitudes or reduced drastically its southward summer displacement. This hypothesis is consistent with marine and ice core records.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-01-10T13:05:08Z No. of bitstreams: 1 Ledru.pdf: 288799 bytes, checksum: 6a5507cad5ed7f79f8f01697579a5101 (MD5)Made available in DSpace on 2013-01-10T13:05:08Z (GMT). No. of bitstreams: 1 Ledru.pdf: 288799 bytes, checksum: 6a5507cad5ed7f79f8f01697579a5101 (MD5) Previous issue date: 2001http://dx.doi.org/10.1006/qres.2000.2187reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBApalynologySouth AmericaBrazillate-glacialPodocarpusAmazoniapolar advectionmeteorological equatorLate-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern BrazilQuaternary Researchinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINALLedru.pdfLedru.pdfapplication/pdf288799https://repositorio.ufba.br/bitstream/ri/7789/1/Ledru.pdf6a5507cad5ed7f79f8f01697579a5101MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/7789/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTLedru.pdf.txtLedru.pdf.txtExtracted texttext/plain32683https://repositorio.ufba.br/bitstream/ri/7789/3/Ledru.pdf.txt03d97a78523459b3f52234eea91caeb8MD53ri/77892022-07-05 14:03:11.559oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:11Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
dc.title.alternative.pt_BR.fl_str_mv Quaternary Research
title Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
spellingShingle Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
Ledru, Marie-Pierre
palynology
South America
Brazil
late-glacial
Podocarpus
Amazonia
polar advection
meteorological equator
title_short Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
title_full Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
title_fullStr Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
title_full_unstemmed Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
title_sort Late-glacial cooling in Amazonia inferred from pollen at Lagoa do Caco, northern Brazil
author Ledru, Marie-Pierre
author_facet Ledru, Marie-Pierre
Cordeiro, Renato Campello
Dominguez, José Maria Landim
Martin, Louis
Mourguiart, Philippe
Sifeddine, Abdelfetah
Turcq, Bruno
author_role author
author2 Cordeiro, Renato Campello
Dominguez, José Maria Landim
Martin, Louis
Mourguiart, Philippe
Sifeddine, Abdelfetah
Turcq, Bruno
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Ledru, Marie-Pierre
Cordeiro, Renato Campello
Dominguez, José Maria Landim
Martin, Louis
Mourguiart, Philippe
Sifeddine, Abdelfetah
Turcq, Bruno
Ledru, Marie-Pierre
Cordeiro, Renato Campello
Dominguez, José Maria Landim
Martin, Louis
Mourguiart, Philippe
Sifeddine, Abdelfetah
Turcq, Bruno
dc.subject.por.fl_str_mv palynology
South America
Brazil
late-glacial
Podocarpus
Amazonia
polar advection
meteorological equator
topic palynology
South America
Brazil
late-glacial
Podocarpus
Amazonia
polar advection
meteorological equator
description Texto completo: acesso restrito. p.47–56
publishDate 2001
dc.date.issued.fl_str_mv 2001
dc.date.accessioned.fl_str_mv 2013-01-10T13:05:08Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/7789
dc.identifier.issn.none.fl_str_mv 0033-5894
dc.identifier.number.pt_BR.fl_str_mv v. 55, n.1
identifier_str_mv 0033-5894
v. 55, n.1
url http://www.repositorio.ufba.br/ri/handle/ri/7789
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1006/qres.2000.2187
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
bitstream.url.fl_str_mv https://repositorio.ufba.br/bitstream/ri/7789/1/Ledru.pdf
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