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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
05/12/2017 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FONTES, D.; CORDEIRO, R. C.; MARTINS, G. S.; BEHLING, H.; TURCQ, B.; SIFEDDINE, A.; SEOANE, J. C. S.; MOREIRA, L. S.; RODRIGUES, R. de A. R. |
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Afiliação: |
D. FONTES, UFF; R. C. CORDEIRO, UFF; G. S. MARTINS, UFF; H. BEHLING, Georg-August-University of Göttingen; B. TURCQ, IRD, UPMC, UFF, Uantof, UPCH; A. SIFEDDINE, IRD, UPMC, UFF, Uantof, UPCH; J. C. S. SEOANE, UFRJ; L. S. MOREIRA, UFF; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS. |
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Título: |
Paleoenvironmental dynamics in South Amazonia, Brazil, during the last 35,000 years inferred from pollen and geochemical records of Lago do Saci. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Quaternary Science Reviews, v. 173, p. 161-180, Oct. 2017. |
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DOI: |
https://doi.org/10.1016/j.quascirev.2017.08.021 |
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Idioma: |
Inglês |
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Conteúdo: |
Paleoenvironmental changes for the last 35,000 years were reconstructed from palynological, sedimentological and organic geochemical evidence from a well-dated sediment core from Lago do Saci (South Amazonia). Dry climatic conditions occurred between 35,000 and 18,200 cal yr BP as recorded by high frequencies of open savanna taxa and low lake level indicated by Sagittaria and low Total Organic Carbon content. Cold temperatures are indicated by the presence of Podocarpus and Ilex. A sedimentation hiatus observed between 18,200 and 9200 cal yr BP was likely related to dry conditions. The beginning of the Holocene was marked by rainforest expansion and an increase in carbon content that represented high lake levels and warmer and wetter climate conditions. Between 7500 and 5000 cal yr BP, the expansion of open savanna, seasonal forest elements and abundant black carbon suggests a dry phase. After 5000 cal yr BP, rainforest expansion and higher lake levels indicate a return to wetter conditions. A reduction of flooding taxa (Celtis and Mauritia) between 1800 and 1300 cal yr BP, high lake level conditions and maintenance of a forest physiognomy, suggests a decrease of regional precipitation and subsequent reduction of the flooded areas in a still humid climate regime. |
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Palavras-Chave: |
Holoceno; Paleoambiente; Proxies geoquímicos; Sul da Amazônia. |
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Thesagro: |
Pólen. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02197naa a2200289 a 4500
001 2081607
005 2021-11-11
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.quascirev.2017.08.021$2DOI
100 1 $aFONTES, D.
245 $aPaleoenvironmental dynamics in South Amazonia, Brazil, during the last 35,000 years inferred from pollen and geochemical records of Lago do Saci.$h[electronic resource]
260 $c2017
520 $aPaleoenvironmental changes for the last 35,000 years were reconstructed from palynological, sedimentological and organic geochemical evidence from a well-dated sediment core from Lago do Saci (South Amazonia). Dry climatic conditions occurred between 35,000 and 18,200 cal yr BP as recorded by high frequencies of open savanna taxa and low lake level indicated by Sagittaria and low Total Organic Carbon content. Cold temperatures are indicated by the presence of Podocarpus and Ilex. A sedimentation hiatus observed between 18,200 and 9200 cal yr BP was likely related to dry conditions. The beginning of the Holocene was marked by rainforest expansion and an increase in carbon content that represented high lake levels and warmer and wetter climate conditions. Between 7500 and 5000 cal yr BP, the expansion of open savanna, seasonal forest elements and abundant black carbon suggests a dry phase. After 5000 cal yr BP, rainforest expansion and higher lake levels indicate a return to wetter conditions. A reduction of flooding taxa (Celtis and Mauritia) between 1800 and 1300 cal yr BP, high lake level conditions and maintenance of a forest physiognomy, suggests a decrease of regional precipitation and subsequent reduction of the flooded areas in a still humid climate regime.
650 $aPólen
653 $aHoloceno
653 $aPaleoambiente
653 $aProxies geoquímicos
653 $aSul da Amazônia
700 1 $aCORDEIRO, R. C.
700 1 $aMARTINS, G. S.
700 1 $aBEHLING, H.
700 1 $aTURCQ, B.
700 1 $aSIFEDDINE, A.
700 1 $aSEOANE, J. C. S.
700 1 $aMOREIRA, L. S.
700 1 $aRODRIGUES, R. de A. R.
773 $tQuaternary Science Reviews$gv. 173, p. 161-180, Oct. 2017.
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Registro original: |
Embrapa Solos (CNPS) |
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Biblioteca |
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Origem |
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Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/04/2008 |
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Data da última atualização: |
29/06/2017 |
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Tipo da produção científica: |
Autoria/Organização/Edição de Livros |
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Autoria: |
FERREIRA, E. A. B.; TOKARSKI, D. J. (org.). |
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Afiliação: |
Eloisa A. Belleza Ferreira, CPAC; Donizete J. Tokarski. |
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Título: |
Bacia hidrográfica do Alto Tocantins: retrato e reflexões. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
[S.l.]: ECODATA: WWF Brasil, 2007. |
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Páginas: |
101 p. |
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Idioma: |
Português |
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Palavras-Chave: |
Protected area; Socioeconomia; Unidade de conservação. |
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Thesagro: |
Meio Ambiente; Qualidade da Água; Recurso Hídrico. |
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Thesaurus NAL: |
environment; socioeconomics; water quality; water resources. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/139638/1/ferreira-01.pdf
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Marc: |
LEADER 00660nam a2200241 a 4500
001 1570866
005 2017-06-29
008 2007 bl uuuu 00u1 u #d
100 1 $aFERREIRA, E. A. B.
245 $aBacia hidrográfica do Alto Tocantins$bretrato e reflexões.
260 $a[S.l.]: ECODATA: WWF Brasil$c2007
300 $a101 p.
650 $aenvironment
650 $asocioeconomics
650 $awater quality
650 $awater resources
650 $aMeio Ambiente
650 $aQualidade da Água
650 $aRecurso Hídrico
653 $aProtected area
653 $aSocioeconomia
653 $aUnidade de conservação
700 1 $aTOKARSKI, D. J.
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