| |
|
|
| Registros recuperados : 9 | |
| 4. |  | FERREIRA, V. M.; MAGALHAES, P. C.; DURAES, F. O. M.; VASCONCELLOS, C. A.; ARAUJO NETO, J. C. de. Acúmulo e distribuição de macronutrientes em dois híbridos duplos de milho, em função da disponibilidade de água no solo. Revista Brasileira de Milho e Sorgo, Sete Lagoas, v. 7, n. 1, p. 1-17, 2008.| Biblioteca(s): Embrapa Milho e Sorgo. |
|    |
| 5. | | CÂMARA, C. de A.; ARAÚJO NETO, J. C. de; FERREIRA, V. M.; ALVES, E. U.; MOURA, F. de B. P. Caracterização morfométrica de frutos e sementes e efeito da temperatura na germinação de Parkia pendula (Willd.) Benth. ex Walp. Ciência Florestal, Santa Maria, v. 18, n.3/4, p. 281-290, set./dez. 2008.| Biblioteca(s): Embrapa Florestas. |
| |
| 6. | | OLIVEIRA, S. S. C. de; ARAÚJO NETO, J. C. de; CRUZ, S. J. S.; FERREIRA, V. M. Caracterização morfométrica de sementes e plântulas e germinação de Anadenanthera macrocarpa (Benth.) Brenan. Ciência Florestal, Santa Maria, RS, v. 22, n. 3, p. 643-653, jul./set. 2012.| Biblioteca(s): Embrapa Florestas. |
| |
| 7. | | SANTOS, M. S. dos; OLIVEIRA, M. E. de; RODRIGUES, M. M.; VELOSO FILHO, E. dos S.; ARAUJO NETO, J. C. de. Estrutura e valor nutritivo de pastos de capins Tanzânia e Marandu aos 22 e 36 dias de rebrota para ovinos. Revista Brasileira de Saúde e Produção Animal, Salvador, v. 13, n. 1, p. 35-46, jan./mar., 2012.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
| |
| 8. | | AZEVEDO, M. M. R.; VASCONCELOS, V. R.; PIMENTEL, J. C. M.; PINTO, B. I. S.; ARAÚJO NETO, J. C. de; CARVALHO, A. de A. Estimativa do volume de gases por meio de equação de regressão para implantação da técnica in vitro semi-automática de produção de gases. Revista Científica de Produção Animal, Teresina, v. 10, n. 1, p. 15-20, jan./jun. 2008.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
| |
| 9. | | CARVALHO, F. S. de S.; OLIVEIRA, F. de S.; SOUSA JÚNIOR, V. R. de; ARAÚJO NETO, J. C. de; SANTOS, M. S. dos; TEIXEIRA, G. A.; NASCIMENTO, M. do P. S. B.; CAMPELO, J. E. G.; OLIVEIRA, M. E. de. Desempenho de cabras mestiças da raça Anglonubiana recebendo suplementação a base de feno de leucena. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 43., 2006, João Pessoa. Produção animal em biomas tropicais: anais dos simpósios. João Pessoa: Sociedade Brasileira de Zootecnia, 2006. 4 f.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
| |
| Registros recuperados : 9 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
24/01/2011 |
|
Data da última atualização: |
04/09/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
PARRON, L. M.; BUSTAMANTE, M. M. C.; MARKEWITZ, D. |
|
Afiliação: |
LUCILIA MARIA PARRON VARGAS, CNPF; Mercedes Maria Cunha Bustamante, UnB; Daniel Markewitz, University of Georgia. |
|
Título: |
Fluxes of nitrogen and phosphorus in a gallery forest in the Cerrado of central Brazil. |
|
Ano de publicação: |
2011 |
|
Fonte/Imprenta: |
Biogeochemistry, v. 105, n. 1-3, p. 89-104, 2011. |
|
DOI: |
10.1007/s10533-010-9537-z |
|
Idioma: |
Inglês |
|
Conteúdo: |
The Gallery forests of the Cerrado biome play a critical role in controlling stream chemistry but little information about biogeochemical processes in these ecosystems is available. This work describes the fluxes of N and P in solutions along a topographic gradient in a gallery forest. Three distinct floristic communities were identified along the gradient: a wet community nearest the stream, an upland dry community adjacent to the woodland savanna and an intermediate community between the two. Transects were marked in the three communities for sampling. Fluxes of N from bulk precipitation to these forests resulted in deposition of 12.6 kg ha-1 y-1 of total N of which 8.8 kg ha-1 was as inorganic N. The throughfall flux of total N was generally\8.4 kg ha-1 year-1. Throughfall NO3?N fluxes were higher (7?32%) while NH4?N and organic N fluxes were lower (54?69%and 5?46%) than those in bulk precipitation. The throughfall flux was slightly lower for the wet forest community compared to other communities. Litter leachate fluxes differed among floristic communities with higher NH4?N in the wet community. The total N flux was greater in the wet forest than in the dry forest (13.5 vs. 9.4 kg ha-1 year-1, respectively). The stream water had totalNflux of 0.3 kg ha-1 year-1. The flux of total P through bulk precipitation was 0.7 kg ha-1 year-1 while the mean fluxes of total P in throughfall (0.6 kg ha-1 year-1) and litter leachate (0.5 kg ha-1 year-1) declined but did not differ between communities. The low concentrations presented in soil solution and low fluxes in stream water (0.3 and 0.1 kg ha-1 year-1 for N and P, respectively) relative to other flowpaths emphasize the conservative nutrient cycling of these forests and the importance of internal recycling processes for the maintenance and conservation of riparian and stream ecosystems in the Cerrado. MenosThe Gallery forests of the Cerrado biome play a critical role in controlling stream chemistry but little information about biogeochemical processes in these ecosystems is available. This work describes the fluxes of N and P in solutions along a topographic gradient in a gallery forest. Three distinct floristic communities were identified along the gradient: a wet community nearest the stream, an upland dry community adjacent to the woodland savanna and an intermediate community between the two. Transects were marked in the three communities for sampling. Fluxes of N from bulk precipitation to these forests resulted in deposition of 12.6 kg ha-1 y-1 of total N of which 8.8 kg ha-1 was as inorganic N. The throughfall flux of total N was generally\8.4 kg ha-1 year-1. Throughfall NO3?N fluxes were higher (7?32%) while NH4?N and organic N fluxes were lower (54?69%and 5?46%) than those in bulk precipitation. The throughfall flux was slightly lower for the wet forest community compared to other communities. Litter leachate fluxes differed among floristic communities with higher NH4?N in the wet community. The total N flux was greater in the wet forest than in the dry forest (13.5 vs. 9.4 kg ha-1 year-1, respectively). The stream water had totalNflux of 0.3 kg ha-1 year-1. The flux of total P through bulk precipitation was 0.7 kg ha-1 year-1 while the mean fluxes of total P in throughfall (0.6 kg ha-1 year-1) and litter leachate (0.5 kg ha-1 year-1) declined but did not differ betwe... Mostrar Tudo |
|
Palavras-Chave: |
Biogeochemical processe; Bulk precipitation; Floresta de galeria; Litter leachate; Processo biogeoquímico; Riparian zone. |
|
Thesagro: |
Fósforo; Nitrogênio; Solo. |
|
Thesaurus NAL: |
soil solution; throughfall. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02719naa a2200289 a 4500
001 1874109
005 2019-09-04
008 2011 bl uuuu u00u1 u #d
024 7 $a10.1007/s10533-010-9537-z$2DOI
100 1 $aPARRON, L. M.
245 $aFluxes of nitrogen and phosphorus in a gallery forest in the Cerrado of central Brazil.$h[electronic resource]
260 $c2011
520 $aThe Gallery forests of the Cerrado biome play a critical role in controlling stream chemistry but little information about biogeochemical processes in these ecosystems is available. This work describes the fluxes of N and P in solutions along a topographic gradient in a gallery forest. Three distinct floristic communities were identified along the gradient: a wet community nearest the stream, an upland dry community adjacent to the woodland savanna and an intermediate community between the two. Transects were marked in the three communities for sampling. Fluxes of N from bulk precipitation to these forests resulted in deposition of 12.6 kg ha-1 y-1 of total N of which 8.8 kg ha-1 was as inorganic N. The throughfall flux of total N was generally\8.4 kg ha-1 year-1. Throughfall NO3?N fluxes were higher (7?32%) while NH4?N and organic N fluxes were lower (54?69%and 5?46%) than those in bulk precipitation. The throughfall flux was slightly lower for the wet forest community compared to other communities. Litter leachate fluxes differed among floristic communities with higher NH4?N in the wet community. The total N flux was greater in the wet forest than in the dry forest (13.5 vs. 9.4 kg ha-1 year-1, respectively). The stream water had totalNflux of 0.3 kg ha-1 year-1. The flux of total P through bulk precipitation was 0.7 kg ha-1 year-1 while the mean fluxes of total P in throughfall (0.6 kg ha-1 year-1) and litter leachate (0.5 kg ha-1 year-1) declined but did not differ between communities. The low concentrations presented in soil solution and low fluxes in stream water (0.3 and 0.1 kg ha-1 year-1 for N and P, respectively) relative to other flowpaths emphasize the conservative nutrient cycling of these forests and the importance of internal recycling processes for the maintenance and conservation of riparian and stream ecosystems in the Cerrado.
650 $asoil solution
650 $athroughfall
650 $aFósforo
650 $aNitrogênio
650 $aSolo
653 $aBiogeochemical processe
653 $aBulk precipitation
653 $aFloresta de galeria
653 $aLitter leachate
653 $aProcesso biogeoquímico
653 $aRiparian zone
700 1 $aBUSTAMANTE, M. M. C.
700 1 $aMARKEWITZ, D.
773 $tBiogeochemistry$gv. 105, n. 1-3, p. 89-104, 2011.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
