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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
14/01/2015 |
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Data da última atualização: |
14/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CORDEIRO, R. C.; TURCQ, B.; MOREIRA, L. S.; RODRIGUES, R. de A. R.; SIMÕES FILHO, F. F. L.; MARTINS, G. S.; SANTOS, A. B.; BARBOSA, M.; CONCEIÇÃO, M. C. G. da; RODRIGUES, R. de C.; EVANGELISTA, H.; MOREIRA-TURCQ, P.; PENIDO, Y. P.; SIFEDDINE, A.; SEOANE, J. C. S. |
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Afiliação: |
RENATO CAMPELLO CORDEIRO, UFF; BRUNO TURCQ, IRD-LOCEAN; LUCIANE SILVA MOREIRA, UFF; RENATO DE ARAGAO RIBEIRO RODRIGUES, CPAMT; FRANCISCO FERNANDO LAMEGO SIMÕES FILHO, IEN; GABRIEL SOUZA MARTINS, UFF; ALICE BOSCO SANTOS, UFF; MARCELO BARBOSA, UFRJ; MARCELA CARDOSO GUILLES DA CONCEIÇÃO, UFF; RODRIGO DE CARVALHO RODRIGUES, UFF; HEITOR EVANGELISTA, UERJ-LARAMG; PATRICIA MOREIRA-TURCQ, IRD-GET; YVAGA POTY PENIDO, UFF; ABDELFETTAH SIFEDDINE, UFF; JOSÉ CARLOS SÍCOLI SEOANE, UFRJ. |
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Título: |
Palaeofires in Amazon: Interplay between land use change and palaeoclimatic events |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Palaeogeography, Palaeoclimatology, Palaeoecology, v. 415, p.137-151, dez. 2014 |
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Páginas: |
15 |
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ISSN: |
0031-0182 |
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DOI: |
http://dx.doi.org.ez103.periodicos.capes.gov.br/10.1016/j.palaeo.2014.07.020 |
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Idioma: |
Inglês |
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Conteúdo: |
Interpreting the geological record of Amazon biomass combustion requires comparing charcoal accumulation rates in various biomes at different time scales. Charcoal accumulation rates, a proxy for palaeofire records, were obtained in sediment cores from Amazon lakes surrounded by several vegetation types and from a reservoirs in an intense land use change region. The records presented in this study were obtained in the following areas i) a reservoirs in Alta Floresta region (northern Mato Grosso State); ii) Lago do Saci (southern Pará State), a lake close to Alta Floresta and located at the southern border of Pará State; iii) a bog in an ecotone area in the Humaitá region (southern Amazonas State); iv) lakes in lateritic iron crust of the Carajás Hills (southeastern Pará State); v) Lago Comprido, a floodplain lake close to the Amazon River and surrounded by tropical rain forest (Monte Alegre, Pará State; vi) Lagoa da Pata in the Morro dos Seis Lagos alkaline complex (São Gabriel da Cachoeira, Amazonas State) and vii) Lago Caracaranã, a secluded lake in the northern Amazon cerrado (Roraima State). The highest charcoal accumulation rates were observed for modern records related to an intense change in land use at Alta Floresta, which had no precedent during the Holocene history of the Amazon. High charcoal accumulation rates that were observed in the Carajás region during low lake level phases in the Amazon in the mid-Holocene were comparable to those at the onset of the human settlement in Alta Floresta region. An increase in charcoal accumulation rate was observed in the late Holocene when the lake level was high, suggesting an interaction between climates and human presence. Low charcoal accumulation rates are typical of modern high rainfall environments, as observed in Lagoa da Pata where the environment is not susceptible to occurrences of wildfires even during relatively drier climatic phases. Low charcoal accumulation rates also exist in the relatively dry cerrado (savanna type) biome even during relatively dry phases in the Caracaranã region where the savanna-type vegetation biomass is lower and thus generates less charcoal particles than forest ecosystems. MenosInterpreting the geological record of Amazon biomass combustion requires comparing charcoal accumulation rates in various biomes at different time scales. Charcoal accumulation rates, a proxy for palaeofire records, were obtained in sediment cores from Amazon lakes surrounded by several vegetation types and from a reservoirs in an intense land use change region. The records presented in this study were obtained in the following areas i) a reservoirs in Alta Floresta region (northern Mato Grosso State); ii) Lago do Saci (southern Pará State), a lake close to Alta Floresta and located at the southern border of Pará State; iii) a bog in an ecotone area in the Humaitá region (southern Amazonas State); iv) lakes in lateritic iron crust of the Carajás Hills (southeastern Pará State); v) Lago Comprido, a floodplain lake close to the Amazon River and surrounded by tropical rain forest (Monte Alegre, Pará State; vi) Lagoa da Pata in the Morro dos Seis Lagos alkaline complex (São Gabriel da Cachoeira, Amazonas State) and vii) Lago Caracaranã, a secluded lake in the northern Amazon cerrado (Roraima State). The highest charcoal accumulation rates were observed for modern records related to an intense change in land use at Alta Floresta, which had no precedent during the Holocene history of the Amazon. High charcoal accumulation rates that were observed in the Carajás region during low lake level phases in the Amazon in the mid-Holocene were comparable to those at the onset of the human ... Mostrar Tudo |
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Thesagro: |
Carvão Vegetal. |
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Thesaurus Nal: |
Amazonia; Charcoal; Climate change. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/115554/1/cpamt-2014-rodrigues-palaeofires-amazon.pdf
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Marc: |
LEADER 03337naa a2200373 a 4500
001 2005589
005 2015-01-14
008 2014 bl uuuu u00u1 u #d
022 $a0031-0182
024 7 $ahttp://dx.doi.org.ez103.periodicos.capes.gov.br/10.1016/j.palaeo.2014.07.020$2DOI
100 1 $aCORDEIRO, R. C.
245 $aPalaeofires in Amazon$bInterplay between land use change and palaeoclimatic events$h[electronic resource]
260 $c2014
300 $a15
520 $aInterpreting the geological record of Amazon biomass combustion requires comparing charcoal accumulation rates in various biomes at different time scales. Charcoal accumulation rates, a proxy for palaeofire records, were obtained in sediment cores from Amazon lakes surrounded by several vegetation types and from a reservoirs in an intense land use change region. The records presented in this study were obtained in the following areas i) a reservoirs in Alta Floresta region (northern Mato Grosso State); ii) Lago do Saci (southern Pará State), a lake close to Alta Floresta and located at the southern border of Pará State; iii) a bog in an ecotone area in the Humaitá region (southern Amazonas State); iv) lakes in lateritic iron crust of the Carajás Hills (southeastern Pará State); v) Lago Comprido, a floodplain lake close to the Amazon River and surrounded by tropical rain forest (Monte Alegre, Pará State; vi) Lagoa da Pata in the Morro dos Seis Lagos alkaline complex (São Gabriel da Cachoeira, Amazonas State) and vii) Lago Caracaranã, a secluded lake in the northern Amazon cerrado (Roraima State). The highest charcoal accumulation rates were observed for modern records related to an intense change in land use at Alta Floresta, which had no precedent during the Holocene history of the Amazon. High charcoal accumulation rates that were observed in the Carajás region during low lake level phases in the Amazon in the mid-Holocene were comparable to those at the onset of the human settlement in Alta Floresta region. An increase in charcoal accumulation rate was observed in the late Holocene when the lake level was high, suggesting an interaction between climates and human presence. Low charcoal accumulation rates are typical of modern high rainfall environments, as observed in Lagoa da Pata where the environment is not susceptible to occurrences of wildfires even during relatively drier climatic phases. Low charcoal accumulation rates also exist in the relatively dry cerrado (savanna type) biome even during relatively dry phases in the Caracaranã region where the savanna-type vegetation biomass is lower and thus generates less charcoal particles than forest ecosystems.
650 $aAmazonia
650 $aCharcoal
650 $aClimate change
650 $aCarvão Vegetal
700 1 $aTURCQ, B.
700 1 $aMOREIRA, L. S.
700 1 $aRODRIGUES, R. de A. R.
700 1 $aSIMÕES FILHO, F. F. L.
700 1 $aMARTINS, G. S.
700 1 $aSANTOS, A. B.
700 1 $aBARBOSA, M.
700 1 $aCONCEIÇÃO, M. C. G. da
700 1 $aRODRIGUES, R. de C.
700 1 $aEVANGELISTA, H.
700 1 $aMOREIRA-TURCQ, P.
700 1 $aPENIDO, Y. P.
700 1 $aSIFEDDINE, A.
700 1 $aSEOANE, J. C. S.
773 $tPalaeogeography, Palaeoclimatology, Palaeoecology$gv. 415, p.137-151, dez. 2014
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
29/01/2016 |
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Data da última atualização: |
09/08/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
LOPES, O. F.; MENDONÇA, V. R. de; SILVA, F. B. F.; PARIS, E. C.; RIBEIRO, C. |
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Afiliação: |
ELAINE CRISTINA PARIS, CNPDIA; CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Óxidos de nióbio: uma visão sobre a síntese do Nb2O5 e sua aplicação em fotocatálise heterogênea. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Química nova, São Paulo, v. 38, n. 1, p. 106-117, 2015. |
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ISSN: |
0100-4042 |
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DOI: |
10.5935/0100-4042.20140280 |
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Idioma: |
Português |
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Palavras-Chave: |
Heterogeneous photocatalysis; Nb; Nb2O5. |
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Thesaurus NAL: |
synthesis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00702naa a2200229 a 4500
001 2035585
005 2018-08-09
008 2015 bl uuuu u00u1 u #d
022 $a0100-4042
024 7 $a10.5935/0100-4042.20140280$2DOI
100 1 $aLOPES, O. F.
245 $aÓxidos de nióbio$buma visão sobre a síntese do Nb2O5 e sua aplicação em fotocatálise heterogênea.$h[electronic resource]
260 $c2015
650 $asynthesis
653 $aHeterogeneous photocatalysis
653 $aNb
653 $aNb2O5
700 1 $aMENDONÇA, V. R. de
700 1 $aSILVA, F. B. F.
700 1 $aPARIS, E. C.
700 1 $aRIBEIRO, C.
773 $tQuímica nova, São Paulo$gv. 38, n. 1, p. 106-117, 2015.
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