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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
13/12/2019 |
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Data da última atualização: |
13/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
QUEIROZA, M. G. de; SILVA, T. G. F. da; ZOLNIER, S.; SOUZA, C. A. A. de; NETOD, S.; FERREIRA, W. P. M. |
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Afiliação: |
Maria Gabriela de Queiroza, Universidade Federal de Viçosa - UFV/Departamento de Engenharia Agrícola; Thieres George Freire da Silva, Universidade Federal Rural de Pernambuco - UFPB/Departamento de Engenharia Agrícola; Sérgio Zolnier, Universidade Federal de Viçosa - UFV/Departamento de Engenharia Agrícola; Carlos André Alves de Souza, Universidade Federal Rural de Pernambuco - UFPB/Departamento de Engenharia Agrícola; Steidle Neto, Universidade Federal de São João Del-Rei/Departamento de Ciências Agrárias; WILLIAMS PINTO MARQUES FERREIRA, CNPCa. |
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Título: |
Seasonal patterns of deposition litterfall in a seasonal dry tropical forest. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 279, artigo.107712, December 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
The Caatinga Domain is exclusively Brazilian, covered by vegetation exhibiting a great diversity of species, which have morphological and physiological characteristics determined by environmental conditions. These attributes define quantity and quality litterfall deposition on the soil. The litterfall deposition seasonality was monitored a fragment of Caatinga vegetation, located in the semiarid region of Brazil, from 2016 to 2017. The decomposition rate, mean residence time for litterfall (50 and 95%), and the exportation of mineral nutrients via deciduous material were determined. Data from meteorological variables and litterfall were used in the elaboration of Pearson's correlation matrix, and multicollinearity, canonical and path analyzes. The Caatinga deposited on average 637 kg DM (dry mass) ha−1 year−1 litterfall, including 53% leaves, 26% twigs, 15% reproductive structures and 6% miscellanea, with deposition peaks between the months of March and July, with values above 57 kg MS ha−1. Global solar radiation, vapor pressure deficit, soil heat flux, rainfall and normalized difference vegetation index are controlling factors the litterfall deposition. The decomposition rate of the litterfall was 0.33 kg DM ha−1 year−1, while the time required for the disappearance of 50% and 95% of the litterfall was respectively 2.1 and 9.1 years, and the exportation of nutrients was 13.59 kg ha−1 year−1. Litterfall deposition was determined by the environmental conditions and physiological responses of the vegetation, which are fundamental to maintaining the Caatinga Domain. MenosThe Caatinga Domain is exclusively Brazilian, covered by vegetation exhibiting a great diversity of species, which have morphological and physiological characteristics determined by environmental conditions. These attributes define quantity and quality litterfall deposition on the soil. The litterfall deposition seasonality was monitored a fragment of Caatinga vegetation, located in the semiarid region of Brazil, from 2016 to 2017. The decomposition rate, mean residence time for litterfall (50 and 95%), and the exportation of mineral nutrients via deciduous material were determined. Data from meteorological variables and litterfall were used in the elaboration of Pearson's correlation matrix, and multicollinearity, canonical and path analyzes. The Caatinga deposited on average 637 kg DM (dry mass) ha−1 year−1 litterfall, including 53% leaves, 26% twigs, 15% reproductive structures and 6% miscellanea, with deposition peaks between the months of March and July, with values above 57 kg MS ha−1. Global solar radiation, vapor pressure deficit, soil heat flux, rainfall and normalized difference vegetation index are controlling factors the litterfall deposition. The decomposition rate of the litterfall was 0.33 kg DM ha−1 year−1, while the time required for the disappearance of 50% and 95% of the litterfall was respectively 2.1 and 9.1 years, and the exportation of nutrients was 13.59 kg ha−1 year−1. Litterfall deposition was determined by ... Mostrar Tudo |
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Palavras-Chave: |
Environmental variables; Process of decomposition; Seasonal pattern; Semi-arid region. |
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Thesagro: |
Caatinga. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206995/1/Seasonal-patterns-of-deposition.pdf
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Marc: |
LEADER 02366naa a2200241 a 4500
001 2116840
005 2019-12-13
008 2019 bl uuuu u00u1 u #d
100 1 $aQUEIROZA, M. G. de
245 $aSeasonal patterns of deposition litterfall in a seasonal dry tropical forest.$h[electronic resource]
260 $c2019
520 $aThe Caatinga Domain is exclusively Brazilian, covered by vegetation exhibiting a great diversity of species, which have morphological and physiological characteristics determined by environmental conditions. These attributes define quantity and quality litterfall deposition on the soil. The litterfall deposition seasonality was monitored a fragment of Caatinga vegetation, located in the semiarid region of Brazil, from 2016 to 2017. The decomposition rate, mean residence time for litterfall (50 and 95%), and the exportation of mineral nutrients via deciduous material were determined. Data from meteorological variables and litterfall were used in the elaboration of Pearson's correlation matrix, and multicollinearity, canonical and path analyzes. The Caatinga deposited on average 637 kg DM (dry mass) ha−1 year−1 litterfall, including 53% leaves, 26% twigs, 15% reproductive structures and 6% miscellanea, with deposition peaks between the months of March and July, with values above 57 kg MS ha−1. Global solar radiation, vapor pressure deficit, soil heat flux, rainfall and normalized difference vegetation index are controlling factors the litterfall deposition. The decomposition rate of the litterfall was 0.33 kg DM ha−1 year−1, while the time required for the disappearance of 50% and 95% of the litterfall was respectively 2.1 and 9.1 years, and the exportation of nutrients was 13.59 kg ha−1 year−1. Litterfall deposition was determined by the environmental conditions and physiological responses of the vegetation, which are fundamental to maintaining the Caatinga Domain.
650 $aCaatinga
653 $aEnvironmental variables
653 $aProcess of decomposition
653 $aSeasonal pattern
653 $aSemi-arid region
700 1 $aSILVA, T. G. F. da
700 1 $aZOLNIER, S.
700 1 $aSOUZA, C. A. A. de
700 1 $aNETOD, S.
700 1 $aFERREIRA, W. P. M.
773 $tAgricultural and Forest Meteorology$gv. 279, artigo.107712, December 2019.
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Registro original: |
Embrapa Café (CNPCa) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
22/08/2001 |
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Data da última atualização: |
13/09/2004 |
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Autoria: |
ARAUJO, J. V. de; GUIMARAES, M. P.; LIMA, P. A. dos S.; LIMA, W. dos S. |
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Título: |
Availiacao de Tratamentos Anti-Helminticos em Bezerros da Bacia Leiteira de Muriae, MG. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.27, n.1, p.7-14,jan.1992 |
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Idioma: |
Português |
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Conteúdo: |
Em cinco fazendas leiteiras da regiao de Muriae, MG, foi avaliada a aplicacao de tratamentos anti-helminticos sobre as contagens de ovos por grama de fezes (OPG) de nematoides gastrintestinais em 188 bezerros mesticos (Holandes x Zebu) de quatro a dez meses de idade, naturalmente infectados. De duas em duas semanas, dez animais por fazenda foram escolhidos aleatoriamente e deles realizadas as contagens de OPG e coproculturas. Os tratamentos anti-helminticos foram realizados no limiar de 600 OPG e alguns por iniciativa dos criadores utilizando o Febendazole por via oral. Foram observadas reducoes do numero de OPG de 33,3 a 100%, apos a aplicacao da droga. Houve menores contagens de OPG nos bezerros das duas fazendas de menor extensao territorial. Os generos de nematoides gastrintestinais identificados foram Cooperia, Haemonchus, Oesophagostomum, Bunostomum e Trichostrongylus. As rapidas reinfeccoes dos animais tratados, provavelmente relacionadas ao manejo dos animais e condicoes climaticas, interferiram nos meios de controle utilizados. |
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Palavras-Chave: |
bovinos de leite; febendozole; Infeccao helmintica; nematoides gastrintestinais. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/20596/1/pab02_jan_92.pdf
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Marc: |
LEADER 01677naa a2200205 a 4500
001 1105512
005 2004-09-13
008 1992 bl uuuu u00u1 u #d
100 1 $aARAUJO, J. V. de
245 $aAvailiacao de Tratamentos Anti-Helminticos em Bezerros da Bacia Leiteira de Muriae, MG.
260 $c1992
520 $aEm cinco fazendas leiteiras da regiao de Muriae, MG, foi avaliada a aplicacao de tratamentos anti-helminticos sobre as contagens de ovos por grama de fezes (OPG) de nematoides gastrintestinais em 188 bezerros mesticos (Holandes x Zebu) de quatro a dez meses de idade, naturalmente infectados. De duas em duas semanas, dez animais por fazenda foram escolhidos aleatoriamente e deles realizadas as contagens de OPG e coproculturas. Os tratamentos anti-helminticos foram realizados no limiar de 600 OPG e alguns por iniciativa dos criadores utilizando o Febendazole por via oral. Foram observadas reducoes do numero de OPG de 33,3 a 100%, apos a aplicacao da droga. Houve menores contagens de OPG nos bezerros das duas fazendas de menor extensao territorial. Os generos de nematoides gastrintestinais identificados foram Cooperia, Haemonchus, Oesophagostomum, Bunostomum e Trichostrongylus. As rapidas reinfeccoes dos animais tratados, provavelmente relacionadas ao manejo dos animais e condicoes climaticas, interferiram nos meios de controle utilizados.
653 $abovinos de leite
653 $afebendozole
653 $aInfeccao helmintica
653 $anematoides gastrintestinais
700 1 $aGUIMARAES, M. P.
700 1 $aLIMA, P. A. dos S.
700 1 $aLIMA, W. dos S.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.27, n.1, p.7-14,jan.1992
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