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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
27/07/2015 |
Data da última atualização: |
27/07/2015 |
Autoria: |
BENTO, A. H. L.; FRANCO, R. M.; OLIVEIRA, L. A. T. |
Afiliação: |
Universidade Federal Fluminense, Niterói, RJ, Brazil. |
Título: |
Bacteriological quality evaluation of goat milk. |
Ano de publicação: |
1987 |
Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON GOATS, 4., 1987, Brasília, DF. Proceedings... Brasília, DF: EMBRAPA-DDT, 1987. v. 2. p. 1479. Abstract 252. |
Idioma: |
Inglês |
Palavras-Chave: |
Bacteriological analysis; Heat treating. |
Thesagro: |
Análise bacteriológica; Bacteriologia; Caprino; Leite de cabra; Tratamento Térmico. |
Thesaurus Nal: |
Bacteriology; Goat milk. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 00752naa a2200241 a 4500 001 2020520 005 2015-07-27 008 1987 bl uuuu u00u1 u #d 100 1 $aBENTO, A. H. L. 245 $aBacteriological quality evaluation of goat milk. 260 $c1987 650 $aBacteriology 650 $aGoat milk 650 $aAnálise bacteriológica 650 $aBacteriologia 650 $aCaprino 650 $aLeite de cabra 650 $aTratamento Térmico 653 $aBacteriological analysis 653 $aHeat treating 700 1 $aFRANCO, R. M. 700 1 $aOLIVEIRA, L. A. T. 773 $tIn: INTERNATIONAL CONFERENCE ON GOATS, 4., 1987, Brasília, DF. Proceedings... Brasília, DF: EMBRAPA-DDT, 1987.$gv. 2. p. 1479. Abstract 252.
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Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
26/07/2018 |
Data da última atualização: |
26/07/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
DAVIDSON, E. A.; MARKEWITZ, D.; FIGUEIREDO, R. de O.; CAMARGO, P. B. de. |
Afiliação: |
ERIC A DAVIDSON, University of Maryland Center for Environmental Science; DANIEL MARKEWITZ, University of Georgia; RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA; PLINIO BARBOSA DE CAMARGO, CENA-USP. |
Título: |
Nitrogen fixation inputs in pasture and early successional forest in the Brazilian Amazon region: evidence from a claybox mesocosm study. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Journal of Geophysical Research: Biogeosciences, v. 123, n. 2, p. 712-721, 2018. |
DOI: |
https://doi.org/10.1002/2017JG004103 |
Idioma: |
Inglês |
Conteúdo: |
The role of biological nitrogen fixation (BNF) during secondary forest succession and in tropical pastures has been investigated and debated for several decades. Here we present results of a replicated experimental study in a degraded cattle pasture of eastern Amazonia using mass balance and a 15N tracer in lined soil pit mesocosms with three treatments: (1) plant-free control plots, (2) pasture grass Brachiaria brizantha, and (3) regrowth of early successional secondary forest species. Accumulation of N in grass biomass slightly exceeded estimates of net N mineralization from the plant-free control plots but was within the margin of error, so inputs of BNF may not have been needed. In contrast, the secondary forest vegetation accumulated about 3 times as much biomass N annually as the net N mineralization estimate, suggesting at least some role for BNF. Based on isotopic and mass measurements of N-fixing species, BNF was estimated to contribute at least 27 ± 3% of mean annual plant uptake in the secondary forest regrowth vegetation plots. Although BNF is probably important for recuperation of tropical secondary forests following land use change, the majority of the N taken up by both grasses and secondary forest regrowth arose from mineralization of the stocks of soil N. |
Thesagro: |
Argila; Fixação de nitrogênio; Floresta secundária; Pastagem. |
Thesaurus NAL: |
Clay; Forest succession; Nitrogen fixation; Tropical pastures. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02167naa a2200265 a 4500 001 2093599 005 2018-07-26 008 2018 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1002/2017JG004103$2DOI 100 1 $aDAVIDSON, E. A. 245 $aNitrogen fixation inputs in pasture and early successional forest in the Brazilian Amazon region$bevidence from a claybox mesocosm study.$h[electronic resource] 260 $c2018 520 $aThe role of biological nitrogen fixation (BNF) during secondary forest succession and in tropical pastures has been investigated and debated for several decades. Here we present results of a replicated experimental study in a degraded cattle pasture of eastern Amazonia using mass balance and a 15N tracer in lined soil pit mesocosms with three treatments: (1) plant-free control plots, (2) pasture grass Brachiaria brizantha, and (3) regrowth of early successional secondary forest species. Accumulation of N in grass biomass slightly exceeded estimates of net N mineralization from the plant-free control plots but was within the margin of error, so inputs of BNF may not have been needed. In contrast, the secondary forest vegetation accumulated about 3 times as much biomass N annually as the net N mineralization estimate, suggesting at least some role for BNF. Based on isotopic and mass measurements of N-fixing species, BNF was estimated to contribute at least 27 ± 3% of mean annual plant uptake in the secondary forest regrowth vegetation plots. Although BNF is probably important for recuperation of tropical secondary forests following land use change, the majority of the N taken up by both grasses and secondary forest regrowth arose from mineralization of the stocks of soil N. 650 $aClay 650 $aForest succession 650 $aNitrogen fixation 650 $aTropical pastures 650 $aArgila 650 $aFixação de nitrogênio 650 $aFloresta secundária 650 $aPastagem 700 1 $aMARKEWITZ, D. 700 1 $aFIGUEIREDO, R. de O. 700 1 $aCAMARGO, P. B. de 773 $tJournal of Geophysical Research: Biogeosciences$gv. 123, n. 2, p. 712-721, 2018.
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