| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Cerrados; Embrapa Florestas. |
|
Data corrente: |
11/07/1994 |
|
Data da última atualização: |
11/07/1994 |
|
Autoria: |
FELFILI, J. M. |
|
Título: |
Structure and dynamics of a gallery forest in Central Brazil. |
|
Ano de publicação: |
1993 |
|
Fonte/Imprenta: |
Oxford, UK: University of Oxford, 1993. |
|
Páginas: |
180 f. |
|
Idioma: |
Inglês |
|
Notas: |
Ph.D. Thesis. |
|
Conteúdo: |
This is pattern-seeking study in which several features were studied over six years in approximately 64 ha of undisturbed gallery forest alongside the Gama stream. Trees from 31cm gbh (c. 10cm dbh) were measured every three years from 1985 in 151 (10m x 20m) permanent plots. Natural regenerations (individuals under 31 cm ghb) was measured in subplots within the 200 m2 plots. The total tree flora (ghb >- 31cm) consisted of 93 species, 81 genera and 44 families in 1985. The Leguminosae, Myrtaceae and Rubiaceae were the richest families in numbers of species. Most individuals and species were under 45cm diameter and 20m whilethe maximum diameter for individual species ranged from 30 to 95cm. The density structure of tree and natural regeneration was similar to each other more than 80% of the species occurring at low densities. The periodic mean annual diameter increment for tree from 10cm dbh, was about 0.25cm/year. Variability was high with coefficients of variation of 100% or more. Niche partitioning seems to determine the density strucure of the forest. The most abundant species occupy different positions in the canopy, have different size structures, spatial distributions and growth habits which enables them to coexist in abundance. The Gama community seems to be robust enough to maintain a diversity of species and structure in undisturbed conditions. Regeneration of about 80% of the species occurred in the estabilishment phase (poles); the diameter structure was typical of a species-rich community with the number of individuals decreasing with increasing size classes and showing little change over the six years; recruitiment compensated for mortality of most of the abundant species. The soils in Gama gallery forest were dystrophic with aluminium contents. Multivariate analyses indicated the stream, natural gap and edges as the main causes of diferentiation at community level. Brief comparisons are made of gallery forests in five sites, sampled by the same methodology, in the same land unit and also whith a forest subjected to repeated burning. Repeated fires degrade gallery forests. The low similarity between sites in the same land unit indicates the need to protect the network of gallery forests. MenosThis is pattern-seeking study in which several features were studied over six years in approximately 64 ha of undisturbed gallery forest alongside the Gama stream. Trees from 31cm gbh (c. 10cm dbh) were measured every three years from 1985 in 151 (10m x 20m) permanent plots. Natural regenerations (individuals under 31 cm ghb) was measured in subplots within the 200 m2 plots. The total tree flora (ghb >- 31cm) consisted of 93 species, 81 genera and 44 families in 1985. The Leguminosae, Myrtaceae and Rubiaceae were the richest families in numbers of species. Most individuals and species were under 45cm diameter and 20m whilethe maximum diameter for individual species ranged from 30 to 95cm. The density structure of tree and natural regeneration was similar to each other more than 80% of the species occurring at low densities. The periodic mean annual diameter increment for tree from 10cm dbh, was about 0.25cm/year. Variability was high with coefficients of variation of 100% or more. Niche partitioning seems to determine the density strucure of the forest. The most abundant species occupy different positions in the canopy, have different size structures, spatial distributions and growth habits which enables them to coexist in abundance. The Gama community seems to be robust enough to maintain a diversity of species and structure in undisturbed conditions. Regeneration of about 80% of the species occurred in the estabilishment phase (poles); the diameter structure was typical of... Mostrar Tudo |
|
Palavras-Chave: |
Brasil; Central region; Distrito Federal; Fazenda Água Limpa; Fitossociologia; Floresta de galeria; Gallery forest; Gama; Região Central; Riparian vegetation. |
|
Thesagro: |
Biodiversidade; Cerrado; Composição Botânica; Ecologia; Mata Ciliar; Regeneração Natural. |
|
Thesaurus Nal: |
biodiversity; botanical composition; Brazil; ecology; natural regeneration; plant ecology; savannas. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 03298nam a2200409 a 4500
001 1548912
005 1994-07-11
008 1993 bl uuuu m 00u1 u #d
100 1 $aFELFILI, J. M.
245 $aStructure and dynamics of a gallery forest in Central Brazil.
260 $aOxford, UK: University of Oxford$c1993
300 $a180 f.
500 $aPh.D. Thesis.
520 $aThis is pattern-seeking study in which several features were studied over six years in approximately 64 ha of undisturbed gallery forest alongside the Gama stream. Trees from 31cm gbh (c. 10cm dbh) were measured every three years from 1985 in 151 (10m x 20m) permanent plots. Natural regenerations (individuals under 31 cm ghb) was measured in subplots within the 200 m2 plots. The total tree flora (ghb >- 31cm) consisted of 93 species, 81 genera and 44 families in 1985. The Leguminosae, Myrtaceae and Rubiaceae were the richest families in numbers of species. Most individuals and species were under 45cm diameter and 20m whilethe maximum diameter for individual species ranged from 30 to 95cm. The density structure of tree and natural regeneration was similar to each other more than 80% of the species occurring at low densities. The periodic mean annual diameter increment for tree from 10cm dbh, was about 0.25cm/year. Variability was high with coefficients of variation of 100% or more. Niche partitioning seems to determine the density strucure of the forest. The most abundant species occupy different positions in the canopy, have different size structures, spatial distributions and growth habits which enables them to coexist in abundance. The Gama community seems to be robust enough to maintain a diversity of species and structure in undisturbed conditions. Regeneration of about 80% of the species occurred in the estabilishment phase (poles); the diameter structure was typical of a species-rich community with the number of individuals decreasing with increasing size classes and showing little change over the six years; recruitiment compensated for mortality of most of the abundant species. The soils in Gama gallery forest were dystrophic with aluminium contents. Multivariate analyses indicated the stream, natural gap and edges as the main causes of diferentiation at community level. Brief comparisons are made of gallery forests in five sites, sampled by the same methodology, in the same land unit and also whith a forest subjected to repeated burning. Repeated fires degrade gallery forests. The low similarity between sites in the same land unit indicates the need to protect the network of gallery forests.
650 $abiodiversity
650 $abotanical composition
650 $aBrazil
650 $aecology
650 $anatural regeneration
650 $aplant ecology
650 $asavannas
650 $aBiodiversidade
650 $aCerrado
650 $aComposição Botânica
650 $aEcologia
650 $aMata Ciliar
650 $aRegeneração Natural
653 $aBrasil
653 $aCentral region
653 $aDistrito Federal
653 $aFazenda Água Limpa
653 $aFitossociologia
653 $aFloresta de galeria
653 $aGallery forest
653 $aGama
653 $aRegião Central
653 $aRiparian vegetation
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Agroindústria de Alimentos; Embrapa Milho e Sorgo. |
|
Data corrente: |
05/10/2022 |
|
Data da última atualização: |
17/12/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
COLLANTES, N. F.; CARVALHO, C. W. P. de; ASCHERI, J. L. R.; CHAVEZ, D. W. H.; COMETTANT-RABANAL, R.; BERNARDO, C. O.; QUEIROZ, V. A. V. |
|
Afiliação: |
NATHÁLIA FERREIRA COLLANTES, Universidade Federal Rural do Rio de Janeiro; CARLOS WANDERLEI PILER DE CARVALHO, CTAA; JOSE LUIS RAMIREZ ASCHERI, CTAA; DAVY WILLIAM HIDALGO CHÁVEZ, Universidade Federal Rural do Rio de Janeiro; RAÚL COMETTANT-RABANAL, Universidad Privada San Juan Bautista; CRISTIANY OLIVEIRA BERNARDO, Universidade Federal Rural do Rio de Janeiro; VALERIA APARECIDA VIEIRA QUEIROZ, CNPMS. |
|
Título: |
Effect of sucrose on the extrusion of varied whole sorghum grits genotypes. |
|
Ano de publicação: |
2022 |
|
Fonte/Imprenta: |
Journal of Food Processing and Preservation, e17204, 2022. |
|
DOI: |
https://doi.org/10.1111/jfpp.17204 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The effect of sucrose on the extrusion of varied whole sorghum genotypes was studied using a single-screw system. The raw sorghum flours were characterized in terms of chemical composition and particle size. Specific mechanical energy (SME) was measured as a process parameter, as well as expansion properties, hydration, paste viscosity, instrumental color, and texture, along with total phenolic compounds (TPC) and total condensed tannins (TCT) in the puffed extrudates. In general, the addition of 10% sucrose reduced SME (p<.05), sectional expansion, hydration, and cold paste viscosity, indicating lower starch conversion and increased lightness (L*) and hardness (Fc). In contrast, BRS 501 showed opposite results for most of the variables measured, due to the suppression of the lubricant effect attributed to the high lipid in this genotype. Furthermore, the extrusion process at 0% sucrose released TPC values by 71.2% and 317.5% for low-tannin extrudates, while the addition of sucrose (10%) did not alter the TPC (p>.05) and had a protective effect on TCT retention in BRS 305 genotype extrudates. |
|
Thesagro: |
Extrusão; Farinha; Genótipo; Sacarose; Sorgo. |
|
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
|
Marc: |
LEADER 01884naa a2200265 a 4500
001 2149879
005 2022-12-17
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/jfpp.17204$2DOI
100 1 $aCOLLANTES, N. F.
245 $aEffect of sucrose on the extrusion of varied whole sorghum grits genotypes.$h[electronic resource]
260 $c2022
520 $aThe effect of sucrose on the extrusion of varied whole sorghum genotypes was studied using a single-screw system. The raw sorghum flours were characterized in terms of chemical composition and particle size. Specific mechanical energy (SME) was measured as a process parameter, as well as expansion properties, hydration, paste viscosity, instrumental color, and texture, along with total phenolic compounds (TPC) and total condensed tannins (TCT) in the puffed extrudates. In general, the addition of 10% sucrose reduced SME (p<.05), sectional expansion, hydration, and cold paste viscosity, indicating lower starch conversion and increased lightness (L*) and hardness (Fc). In contrast, BRS 501 showed opposite results for most of the variables measured, due to the suppression of the lubricant effect attributed to the high lipid in this genotype. Furthermore, the extrusion process at 0% sucrose released TPC values by 71.2% and 317.5% for low-tannin extrudates, while the addition of sucrose (10%) did not alter the TPC (p>.05) and had a protective effect on TCT retention in BRS 305 genotype extrudates.
650 $aExtrusão
650 $aFarinha
650 $aGenótipo
650 $aSacarose
650 $aSorgo
700 1 $aCARVALHO, C. W. P. de
700 1 $aASCHERI, J. L. R.
700 1 $aCHAVEZ, D. W. H.
700 1 $aCOMETTANT-RABANAL, R.
700 1 $aBERNARDO, C. O.
700 1 $aQUEIROZ, V. A. V.
773 $tJournal of Food Processing and Preservation, e17204, 2022.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agroindústria de Alimentos (CTAA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
