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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
17/08/2006 |
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Data da última atualização: |
29/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOMMER, R.; SÁ, T. D. de A.; VIELHAUER, K.; ARAÚJO, A. C. de; FÖLSTER, H.; VLEK, P. L. G. |
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Afiliação: |
ROLF SOMMER, University of Bonn; TATIANA DEANE DE ABREU SA, CPATU; KONRAD VIELHAUER, University of Bonn; ALESSANDRO CARIOCA DE ARAÚJO, INPA; HORST FÖLSTER, University of Göttingen; University of Bonn. |
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Título: |
Transpiration and canopy conductance of secondary vegetation in the eastern Amazon. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 112, n. 2, p. 103-121, Aug. 2002. |
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Descrição Física: |
il. |
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DOI: |
http://dx.doi.org/10.1016/S0168-1923(02)00044-8 |
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Idioma: |
Inglês |
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Conteúdo: |
Secondary woody vegetation in the Brazilian Amazon accounts for about 30% of the cleared area in this region, which exceeds 100,000 km2. Despite the relative predominance of secondary vegetation, the hydrological and climatic properties of these areas are not well documented. In an effort to address this, the evapotranspiration (E) of a 3.5-year-old secondary vegetation in the eastern Amazon of Brazil was measured over 1 year. The annual evapotranspiration according to the Bowen ratio energy balance (BREB) amounted to 1421 mm, which is equal to rates quoted for tropical primary forests. The secondary vegetation returned 73% of the annual rainfall (1954 mm) to the atmosphere. Evapotranspiration required 73% of the net-radiation (Rn) energy; this function remained fairly constant over the whole year. In order to estimate evapotranspiration with the Penman?Monteith (PM) method, the canopy conductance (gc) was determined using the BREB results. The monthly mean daily gc varied between 14 and 22 mm s?1 in the rainy season and the transitional period (January?August), and reached a minimum of 7 mm s?1 in the dry season in October. The hourly as well as daily mean canopy conductance were approximated by a multiple linear regression analysis incorporating hourly and daily averages of Rn and vapour pressure deficit, respectively. In addition, the Jarvis-type model, which is based on a set of environmental control functions, was applied to predict hourly gc. The multiple linear regression and the non-linear optimisation (Jarvis-type model) were equally suitable for gc prediction. The optimised environmental control functions were comparable to those predicted elsewhere for Amazonian primary forests. This underlines the similarity of secondary and primary forests with respect to hydrological characteristics as well as energy turnover. MenosSecondary woody vegetation in the Brazilian Amazon accounts for about 30% of the cleared area in this region, which exceeds 100,000 km2. Despite the relative predominance of secondary vegetation, the hydrological and climatic properties of these areas are not well documented. In an effort to address this, the evapotranspiration (E) of a 3.5-year-old secondary vegetation in the eastern Amazon of Brazil was measured over 1 year. The annual evapotranspiration according to the Bowen ratio energy balance (BREB) amounted to 1421 mm, which is equal to rates quoted for tropical primary forests. The secondary vegetation returned 73% of the annual rainfall (1954 mm) to the atmosphere. Evapotranspiration required 73% of the net-radiation (Rn) energy; this function remained fairly constant over the whole year. In order to estimate evapotranspiration with the Penman?Monteith (PM) method, the canopy conductance (gc) was determined using the BREB results. The monthly mean daily gc varied between 14 and 22 mm s?1 in the rainy season and the transitional period (January?August), and reached a minimum of 7 mm s?1 in the dry season in October. The hourly as well as daily mean canopy conductance were approximated by a multiple linear regression analysis incorporating hourly and daily averages of Rn and vapour pressure deficit, respectively. In addition, the Jarvis-type model, which is based on a set of environmental control functions, was applied to predict hourly gc. The multiple linear regres... Mostrar Tudo |
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Palavras-Chave: |
Igarapé-Açu; Tipitamba. |
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Thesagro: |
Desmatamento; Transpiração Vegetal; Vegetação Secundária. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02690naa a2200277 a 4500
001 1407956
005 2022-11-29
008 2002 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/S0168-1923(02)00044-8$2DOI
100 1 $aSOMMER, R.
245 $aTranspiration and canopy conductance of secondary vegetation in the eastern Amazon.$h[electronic resource]
260 $c2002
300 $cil.
520 $aSecondary woody vegetation in the Brazilian Amazon accounts for about 30% of the cleared area in this region, which exceeds 100,000 km2. Despite the relative predominance of secondary vegetation, the hydrological and climatic properties of these areas are not well documented. In an effort to address this, the evapotranspiration (E) of a 3.5-year-old secondary vegetation in the eastern Amazon of Brazil was measured over 1 year. The annual evapotranspiration according to the Bowen ratio energy balance (BREB) amounted to 1421 mm, which is equal to rates quoted for tropical primary forests. The secondary vegetation returned 73% of the annual rainfall (1954 mm) to the atmosphere. Evapotranspiration required 73% of the net-radiation (Rn) energy; this function remained fairly constant over the whole year. In order to estimate evapotranspiration with the Penman?Monteith (PM) method, the canopy conductance (gc) was determined using the BREB results. The monthly mean daily gc varied between 14 and 22 mm s?1 in the rainy season and the transitional period (January?August), and reached a minimum of 7 mm s?1 in the dry season in October. The hourly as well as daily mean canopy conductance were approximated by a multiple linear regression analysis incorporating hourly and daily averages of Rn and vapour pressure deficit, respectively. In addition, the Jarvis-type model, which is based on a set of environmental control functions, was applied to predict hourly gc. The multiple linear regression and the non-linear optimisation (Jarvis-type model) were equally suitable for gc prediction. The optimised environmental control functions were comparable to those predicted elsewhere for Amazonian primary forests. This underlines the similarity of secondary and primary forests with respect to hydrological characteristics as well as energy turnover.
650 $aAmazonia
650 $aDesmatamento
650 $aTranspiração Vegetal
650 $aVegetação Secundária
653 $aIgarapé-Açu
653 $aTipitamba
700 1 $aSÁ, T. D. de A.
700 1 $aVIELHAUER, K.
700 1 $aARAÚJO, A. C. de
700 1 $aFÖLSTER, H.
700 1 $aVLEK, P. L. G.
773 $tAgricultural and Forest Meteorology$gv. 112, n. 2, p. 103-121, Aug. 2002.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 7 | |
| 1. |  | SOARES, T. C. B.; MOTTA, L. B.; FERRAO, M. A. G. Estado da arte e perspectivas das pesquisas em Coffea arabica E Coffea canephora na era da genômica. In: GARCIA, G. de O.; REIS, E. F. dos; LIMA, J. S. de S.; XAVIER, A. C.; RODRIGUES, W. N. (Org.). Tópicos Especiais em produção vegetal V. Alegre: CCAUFES, 2015, v. 1 p. 119-136| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Café. |
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| 2. | | CABRAL, P. D. S.; SOARES, T. C. B.; GONÇALVES, L. S. A.; AMARAL JUNIOR A. T. do; LIMA, A. B. P.; RODRIGUES, R.; MATTA, F. de P. Quantification of the diversity among common bean accessions using Ward-MLM strategy. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 10, p. 1124-1132, nov. 2010 Título em português: Quantificação da diversidade entre acessos de feijoeiro?comum com uso da estratégia Ward?MLM.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 3. | | MOTTA, L. B.; SOARES, T. C. B.; FERRAO, M. A. G.; CAIXETA, E. T.; LORENZON, R. M.; SOUZA NETO, J. D. de. Molecular characterization of arabica and conilon coffee plants genotypes by SSR and ISSR markers. Brazilian Archives of biology and technology, v. 57 , n. 5, p.728-735 , 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Café. |
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| 4. | | SOUZA, L. C. de; FERRAO, M. A. G.; CARVALHO, R. D.; FERRÃO, R. G.; FONSECA, A. F. A. da; PINHEIRO, P. F.; SOARES, T. C. B. Molecular characterization of parents and hybrid progenies of conilon coffee. Anais da Academia Brasileira de Ciências , v. 93, Sulp. 3, e20201649, 2021. 17 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Café. |
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| 5. | | LORENZONI, R. M.; SILVA, J A. da; MARTINS JUNIOR, R. P.; QUEIROZ, V. T. de; FERRAO, M. A. G.; SOARES, T. C B. Validação de marcadores EST-SSR desenvolvidos para Café arábica. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 8., 2015, Goiânia. O melhoramento de plantas, o futuro da agricultura e a soberania nacional: anais. Goiânia: UFG: SBMP, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
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| 6. | | MOTTA, L. B.; SOARES, T. C. B.; FERRAO, M. A. G.; CAIXETA, E. T.; PEREIRA JÚNIOR, R. M.; LORENZONI, R. M. Transferability of microsatellite loci in Coffea canephora. Australian Journal of Crop Science, v. 8 , n. 6, p. 987-991 , 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Café. |
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| 7. | | SOARES, T. C. B.; GOOD-GOD, P.I.V.; MIRANDA, F. D. de; SOARES, Y. J. B.; SCHUSTER, I.; PIOVESAN, N. D.; BARROS, E. G. de; MOREIRA, M. A. QTL mapping for protein content in soybean cultivated in two tropical environments. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 11, p. 1533-1541, nov. 2008. Título em português: Mapeamento de QTL quanto ao conteúdo de proteína em soja cultivada em dois ambientes tropicais.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 7 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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