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Registro Completo |
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
22/01/2018 |
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Data da última atualização: |
22/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CUNHA, A. C. da; MUSTIN, K.; SANTOS, E. S. dos; SANTOS, E. W. G. dos; GUEDES, M. C.; CUNHA, H. F. A.; ROSMAN, P. C. C.; STERNBERG, L. da S. L. |
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Afiliação: |
ALAN CAVALCANTI DA CUNHA, Unifap; KAREN MUSTIN, Bolsista CPAF-AP; ELDO SILVA DOS SANTOS, Unifap; EWERTON WANDERSON GONCALVES DOS SANTOS, Unifap; MARCELINO CARNEIRO GUEDES, CPAF-AP; HELENILZA FERREIRA ALBUQUERQUE CUNHA, Unifap; PAULO CESAR COLONNA ROSMAN, COPPE; LEONEL DA SILVEIRA LOBO STERNBERG, University of Miami. |
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Título: |
Hydrodynamics and seed dispersal in the lower Amazon. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Freshwater Biology, p. 1-9, 2017. |
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DOI: |
10.1111/fwb.12982 |
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Idioma: |
Inglês |
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Conteúdo: |
The transport of seeds by water, i.e. hydrochory, is a key mechanism of long-distance dispersal constrained by the attributes of the seed and hydrodynamics. In the freshwater Amazon estuary, river hydrodynamics are influenced by seasonal changes in precipitation and tidal cycles. It is not known to what extent a hydrodynamic model may be able to predict seed dispersal. Here we parameterised a simulation model (SisBaHia) to estimate maximum seed dispersal distances per tidal cycle, which were then compared with data from in situ seed dispersal experiments. The study was conducted along a 27-km stretch of a tributary of the Amazon estuary, using the seeds of a widely distributed riparian tree?Carapa guianensis (Meliaceae). Based on the simulation model, maximum potential seed dispersal distance was higher in the rainy season (c. 8.7 km) when compared with the dry season (5.6 km), for one tidal cycle (12 hr). The seeds of C. guianensis were dispersed further during the ebb than flood tide during the rainy season, the period of seed dispersal. Average dispersal distances observed in seed dispersal experiments conducted during the rainy season, and those predicted by SisBaHia for the same period were within the same order of magnitude. The results of this study confirm that the period of higher precipitation provides favourable hydrological conditions for hydrochory in the Amazon river-estuary complex. The fact that the time taken for the tide to fall is longer in relation to the time taken for it to rise also favours the arrival of the seeds in the main channel of the Amazon, thereby increasing the probability of long-distance dispersal events. MenosThe transport of seeds by water, i.e. hydrochory, is a key mechanism of long-distance dispersal constrained by the attributes of the seed and hydrodynamics. In the freshwater Amazon estuary, river hydrodynamics are influenced by seasonal changes in precipitation and tidal cycles. It is not known to what extent a hydrodynamic model may be able to predict seed dispersal. Here we parameterised a simulation model (SisBaHia) to estimate maximum seed dispersal distances per tidal cycle, which were then compared with data from in situ seed dispersal experiments. The study was conducted along a 27-km stretch of a tributary of the Amazon estuary, using the seeds of a widely distributed riparian tree?Carapa guianensis (Meliaceae). Based on the simulation model, maximum potential seed dispersal distance was higher in the rainy season (c. 8.7 km) when compared with the dry season (5.6 km), for one tidal cycle (12 hr). The seeds of C. guianensis were dispersed further during the ebb than flood tide during the rainy season, the period of seed dispersal. Average dispersal distances observed in seed dispersal experiments conducted during the rainy season, and those predicted by SisBaHia for the same period were within the same order of magnitude. The results of this study confirm that the period of higher precipitation provides favourable hydrological conditions for hydrochory in the Amazon river-estuary complex. The fact that the time taken for the tide to fall is longer in relation to the... Mostrar Tudo |
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Palavras-Chave: |
Long-distance dispersal; Modelling; Simulation; Tidal river. |
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Thesagro: |
Carapa guianensis. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/171510/1/CPAF-AP-2017-Hydrodynamics-and-seed-dispersal.pdf
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Marc: |
LEADER 02429naa a2200277 a 4500
001 2086024
005 2018-01-22
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1111/fwb.12982$2DOI
100 1 $aCUNHA, A. C. da
245 $aHydrodynamics and seed dispersal in the lower Amazon.$h[electronic resource]
260 $c2017
520 $aThe transport of seeds by water, i.e. hydrochory, is a key mechanism of long-distance dispersal constrained by the attributes of the seed and hydrodynamics. In the freshwater Amazon estuary, river hydrodynamics are influenced by seasonal changes in precipitation and tidal cycles. It is not known to what extent a hydrodynamic model may be able to predict seed dispersal. Here we parameterised a simulation model (SisBaHia) to estimate maximum seed dispersal distances per tidal cycle, which were then compared with data from in situ seed dispersal experiments. The study was conducted along a 27-km stretch of a tributary of the Amazon estuary, using the seeds of a widely distributed riparian tree?Carapa guianensis (Meliaceae). Based on the simulation model, maximum potential seed dispersal distance was higher in the rainy season (c. 8.7 km) when compared with the dry season (5.6 km), for one tidal cycle (12 hr). The seeds of C. guianensis were dispersed further during the ebb than flood tide during the rainy season, the period of seed dispersal. Average dispersal distances observed in seed dispersal experiments conducted during the rainy season, and those predicted by SisBaHia for the same period were within the same order of magnitude. The results of this study confirm that the period of higher precipitation provides favourable hydrological conditions for hydrochory in the Amazon river-estuary complex. The fact that the time taken for the tide to fall is longer in relation to the time taken for it to rise also favours the arrival of the seeds in the main channel of the Amazon, thereby increasing the probability of long-distance dispersal events.
650 $aCarapa guianensis
653 $aLong-distance dispersal
653 $aModelling
653 $aSimulation
653 $aTidal river
700 1 $aMUSTIN, K.
700 1 $aSANTOS, E. S. dos
700 1 $aSANTOS, E. W. G. dos
700 1 $aGUEDES, M. C.
700 1 $aCUNHA, H. F. A.
700 1 $aROSMAN, P. C. C.
700 1 $aSTERNBERG, L. da S. L.
773 $tFreshwater Biology, p. 1-9, 2017.
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Registro original: |
Embrapa Amapá (CPAF-AP) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Semiárido. |
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Data corrente: |
05/02/2013 |
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Data da última atualização: |
05/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 3 |
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Autoria: |
RODRIGUES, R. T. DE S.; MENEZES, D. R.; PEREIRA, L. G. R.; ARAUJO, G. G. L. de; DANTAS, F. R.; SILVA, T. M. |
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Afiliação: |
RAFAEL T. DE S. RODRIGUES, UNIVASF; DANIEL R. MENEZES, UNIVASF; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; FABIANA R. DANTAS, IFET/PE; THADEU M. SILVA, UFBA. |
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Título: |
Produção de gases e digestibilidade in vitro de silagem de maniçoba aditivadas com coproduto vitivinicola. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Agrária - Revista Brasileira de Ciências Agrarias, v. 7, n. 4, p. 684-690, 2012. |
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DOI: |
http://doi.org/10.5039/agraria.v7i4a1434 |
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Idioma: |
Português |
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Conteúdo: |
RESUMO - Avaliaram-se a cinética da produção de gases e a digestibilidade in vitro da matéria seca (DIVMS) das silagens de maniçoba com diferentes inclusões do coproduto de vitivinícolas desidratado (CVD) e se confeccionaram 32 silos experimentais da parte aérea da maniçoba, distribuídos em quatro tratamentos (0, 8, 16 e 24% de inclusão do CVD) perfazendo oito repetições. A cinética da fermentação foi avaliada pela técnica in vitro semiautomática de produção de gases. O potencial máximo da produção de gases dos carboidratos totais (CT) diminuiu com o aumento da inclusão do CVD nas silagens de maniçoba, sendo 159,39 para a silagem com 0% e 118,62 mL g-1 de MS para a silagem com 24% do CVD. A menor e a maior taxa da produção de gases dos CT em mL g-1 de MS h-1 e o menor e o maior tempo de colonização foram para as silagens com 16% (0,117) e (3 h:17 min) e com 24% (0,150) e (4 h:48 min) de inclusão do CVD, respectivamente. A DIVMS não apresentou diferença significativa variando de 53,50 a 49,07% com a inclusão do CVD, a qual alterou os parâmetros cinéticos da fermentação das silagens de maniçoba reduzindo a produção de gases sem, ao entanto, causar efeitos significativos na DIVMS. ABSTRACT - The kinetics of the gas production and in vitro digestibility of the dry matter (DM) of ?maniçoba? silage were evaluated with different inclusion of dried residues of the production of wine. Thirty two silos of ?maniçoba? shoots were made and divided into four treatments with different levels of inclusion of dried residues (0, 8, 16 and 24%) of the production of wine, with eight replications. The fermentation kinetics was evaluated by in vitro semi-automated technique of gas production. The potential maximum gas production of the total carbohydrates decreased with increasing inclusion of the dried residue, and was 159.39 and 118.62 mL g-1 of dry matter for silage with 0 and 24% inclusion. The lowest and highest rates of gas production of the total carbohydrates and the lag time were for silages with 16% (0.117 mL g-1 of dry matter per hour and 3 h:17 min) and with 24% (0.150 mL g-1 of dry matter per hour and 4 h:48 min) of inclusion of the dried residue. The in vitro digestibility of the dry matter of silage did not present a significant variation, and was 53.50% for silages with 0% and 49.07% for silages with 24% of inclusion. The inclusion of different levels of dried residues of the production of wine in ?maniçoba? silage reduced the cumulative gas production, however, did not reduce significantly the in vitro digestibility of the DM of silage. MenosRESUMO - Avaliaram-se a cinética da produção de gases e a digestibilidade in vitro da matéria seca (DIVMS) das silagens de maniçoba com diferentes inclusões do coproduto de vitivinícolas desidratado (CVD) e se confeccionaram 32 silos experimentais da parte aérea da maniçoba, distribuídos em quatro tratamentos (0, 8, 16 e 24% de inclusão do CVD) perfazendo oito repetições. A cinética da fermentação foi avaliada pela técnica in vitro semiautomática de produção de gases. O potencial máximo da produção de gases dos carboidratos totais (CT) diminuiu com o aumento da inclusão do CVD nas silagens de maniçoba, sendo 159,39 para a silagem com 0% e 118,62 mL g-1 de MS para a silagem com 24% do CVD. A menor e a maior taxa da produção de gases dos CT em mL g-1 de MS h-1 e o menor e o maior tempo de colonização foram para as silagens com 16% (0,117) e (3 h:17 min) e com 24% (0,150) e (4 h:48 min) de inclusão do CVD, respectivamente. A DIVMS não apresentou diferença significativa variando de 53,50 a 49,07% com a inclusão do CVD, a qual alterou os parâmetros cinéticos da fermentação das silagens de maniçoba reduzindo a produção de gases sem, ao entanto, causar efeitos significativos na DIVMS. ABSTRACT - The kinetics of the gas production and in vitro digestibility of the dry matter (DM) of ?maniçoba? silage were evaluated with different inclusion of dried residues of the production of wine. Thirty two silos of ?maniçoba? shoots were made and divided into four treatments with different leve... Mostrar Tudo |
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Palavras-Chave: |
Alimentos alternativos; Degradabilidade; Euforbiáceas. |
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Thesagro: |
Efeito Estufa; Fermentação. |
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Thesaurus NAL: |
Biodegradability; Fermentation; Greenhouse gases; Mallotus (Euphorbiaceae). |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/948378/1/Producao-de-gases-e-digestibilidade-in-vitro-de-silagem-de-manicoba.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1147255/1/Producao-de-gases-e-digestibilidade-in-vitro-de-silagem-de-manicoba-aditivadas-com-coproduto-vitivinicola-2012.pdf
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Marc: |
LEADER 03586naa a2200301 a 4500
001 1948378
005 2022-09-05
008 2012 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.5039/agraria.v7i4a1434$2DOI
100 1 $aRODRIGUES, R. T. DE S.
245 $aProdução de gases e digestibilidade in vitro de silagem de maniçoba aditivadas com coproduto vitivinicola.$h[electronic resource]
260 $c2012
520 $aRESUMO - Avaliaram-se a cinética da produção de gases e a digestibilidade in vitro da matéria seca (DIVMS) das silagens de maniçoba com diferentes inclusões do coproduto de vitivinícolas desidratado (CVD) e se confeccionaram 32 silos experimentais da parte aérea da maniçoba, distribuídos em quatro tratamentos (0, 8, 16 e 24% de inclusão do CVD) perfazendo oito repetições. A cinética da fermentação foi avaliada pela técnica in vitro semiautomática de produção de gases. O potencial máximo da produção de gases dos carboidratos totais (CT) diminuiu com o aumento da inclusão do CVD nas silagens de maniçoba, sendo 159,39 para a silagem com 0% e 118,62 mL g-1 de MS para a silagem com 24% do CVD. A menor e a maior taxa da produção de gases dos CT em mL g-1 de MS h-1 e o menor e o maior tempo de colonização foram para as silagens com 16% (0,117) e (3 h:17 min) e com 24% (0,150) e (4 h:48 min) de inclusão do CVD, respectivamente. A DIVMS não apresentou diferença significativa variando de 53,50 a 49,07% com a inclusão do CVD, a qual alterou os parâmetros cinéticos da fermentação das silagens de maniçoba reduzindo a produção de gases sem, ao entanto, causar efeitos significativos na DIVMS. ABSTRACT - The kinetics of the gas production and in vitro digestibility of the dry matter (DM) of ?maniçoba? silage were evaluated with different inclusion of dried residues of the production of wine. Thirty two silos of ?maniçoba? shoots were made and divided into four treatments with different levels of inclusion of dried residues (0, 8, 16 and 24%) of the production of wine, with eight replications. The fermentation kinetics was evaluated by in vitro semi-automated technique of gas production. The potential maximum gas production of the total carbohydrates decreased with increasing inclusion of the dried residue, and was 159.39 and 118.62 mL g-1 of dry matter for silage with 0 and 24% inclusion. The lowest and highest rates of gas production of the total carbohydrates and the lag time were for silages with 16% (0.117 mL g-1 of dry matter per hour and 3 h:17 min) and with 24% (0.150 mL g-1 of dry matter per hour and 4 h:48 min) of inclusion of the dried residue. The in vitro digestibility of the dry matter of silage did not present a significant variation, and was 53.50% for silages with 0% and 49.07% for silages with 24% of inclusion. The inclusion of different levels of dried residues of the production of wine in ?maniçoba? silage reduced the cumulative gas production, however, did not reduce significantly the in vitro digestibility of the DM of silage.
650 $aBiodegradability
650 $aFermentation
650 $aGreenhouse gases
650 $aMallotus (Euphorbiaceae)
650 $aEfeito Estufa
650 $aFermentação
653 $aAlimentos alternativos
653 $aDegradabilidade
653 $aEuforbiáceas
700 1 $aMENEZES, D. R.
700 1 $aPEREIRA, L. G. R.
700 1 $aARAUJO, G. G. L. de
700 1 $aDANTAS, F. R.
700 1 $aSILVA, T. M.
773 $tAgrária - Revista Brasileira de Ciências Agrarias$gv. 7, n. 4, p. 684-690, 2012.
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Embrapa Gado de Leite (CNPGL) |
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