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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
27/03/2002 |
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Data da última atualização: |
27/03/2002 |
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Autoria: |
SANO, E. E.; PINHEIRO, G. G. C.; MENESES, P. R. |
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Título: |
Assessing JERS-1 synthetic aperture radar data for vegetation mapping in the Brazilian savanna. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Jorunal of the Remote Sensing Society of Japan, v. 21,n. 2, p.158-167, 2001. |
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Idioma: |
Inglês |
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Conteúdo: |
The use of synthetic aperture radar (SAR) data for savanna vegetation mapping in central Brazil is investigated. A wet season (February, 1996), L-band, JERS 1 SAR scene over diverse as~vanna vegetation types in central Brazil was acquired. A statistical analisys of 1133 backscatter samples extracted from the most representative land cover classes of the study area as well as the analisys of the relationship between field leaf area index measurements and corresponding radar returns were the basis of this study. The SAR data separated the grassland, mixed grass / shrub/woodland and woodland units in the study area. We also found na exponential relationship r ao quadrado igual a 0.63 between and LAI. These results indicate the potential of the L band SAR data for savanna like vegetation mapping and monitoring. |
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Thesagro: |
Cerrado; Radar; Sensoriamento Remoto. |
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Thesaurus Nal: |
remote sensing. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01391naa a2200193 a 4500
001 1555379
005 2002-03-27
008 2001 bl --- 0-- u #d
100 1 $aSANO, E. E.
245 $aAssessing JERS-1 synthetic aperture radar data for vegetation mapping in the Brazilian savanna.
260 $c2001
520 $aThe use of synthetic aperture radar (SAR) data for savanna vegetation mapping in central Brazil is investigated. A wet season (February, 1996), L-band, JERS 1 SAR scene over diverse as~vanna vegetation types in central Brazil was acquired. A statistical analisys of 1133 backscatter samples extracted from the most representative land cover classes of the study area as well as the analisys of the relationship between field leaf area index measurements and corresponding radar returns were the basis of this study. The SAR data separated the grassland, mixed grass / shrub/woodland and woodland units in the study area. We also found na exponential relationship r ao quadrado igual a 0.63 between and LAI. These results indicate the potential of the L band SAR data for savanna like vegetation mapping and monitoring.
650 $aremote sensing
650 $aCerrado
650 $aRadar
650 $aSensoriamento Remoto
700 1 $aPINHEIRO, G. G. C.
700 1 $aMENESES, P. R.
773 $tJorunal of the Remote Sensing Society of Japan$gv. 21,n. 2, p.158-167, 2001.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
20/09/2022 |
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Data da última atualização: |
10/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
TAVARES-DIAS, M. |
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Afiliação: |
MARCOS TAVARES DIAS, CPAF-AP. |
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Título: |
Toxicity, physiological, histopathological, handling, growth and antiparasitic effects of the sodium chloride (salt) in the freshwater fish aquaculture. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Aquaculture Research, v. 53, n. 3, p. 715-734, Feb. 2022. |
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DOI: |
https://doi.org/10.1111/are.15616 |
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Idioma: |
Inglês |
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Conteúdo: |
This paper provides the currently available knowledge in the literature regarding the use of sodium chloride (NaCl) in freshwater fish aquaculture and aquaria as related to toxicity, growth performance, transportation, physiology, immunity, histomorphology and antiparasitic treatment. This review assessed and discussed all of these factors, as well as the potential strategies available to be used in fish farming. Acute toxicity to NaCl varies widely among fish species (3.5?150.0 g L?1) depending on some environment factors, and many fish species are sensitive to concentrations near those required for their development, growth or for controlling and treating parasites. Acute exposure to NaCl may lead to mortality in different fish species, cause changes in feeding and swimming behaviour, as well as in growth performance and histomorphology of gills, while sublethal concentrations are less harmful. To reduce stress during transport of freshwater fish, concentrations of 1.0?10.0 g L?1 of NaCl in water have been tested for some fish species. Data have shown that survival, body growth of fish, food intake and stimulation of food conversion are affected by the NaCl concentration. Moreover, the effects of NaCl on the immune system, physiology and behaviour must also be considered. Sodium chloride may be a chemotherapeutic for controlling and treating ectoparasite diseases in farmed freshwater fish because of its effectiveness and low cost, but this compound may not be used in high or extreme toxic concentrations, since the maximum tolerance may be near the therapeutic doses. Therefore, this chemical product should be used with parsimony in fish farming. MenosThis paper provides the currently available knowledge in the literature regarding the use of sodium chloride (NaCl) in freshwater fish aquaculture and aquaria as related to toxicity, growth performance, transportation, physiology, immunity, histomorphology and antiparasitic treatment. This review assessed and discussed all of these factors, as well as the potential strategies available to be used in fish farming. Acute toxicity to NaCl varies widely among fish species (3.5?150.0 g L?1) depending on some environment factors, and many fish species are sensitive to concentrations near those required for their development, growth or for controlling and treating parasites. Acute exposure to NaCl may lead to mortality in different fish species, cause changes in feeding and swimming behaviour, as well as in growth performance and histomorphology of gills, while sublethal concentrations are less harmful. To reduce stress during transport of freshwater fish, concentrations of 1.0?10.0 g L?1 of NaCl in water have been tested for some fish species. Data have shown that survival, body growth of fish, food intake and stimulation of food conversion are affected by the NaCl concentration. Moreover, the effects of NaCl on the immune system, physiology and behaviour must also be considered. Sodium chloride may be a chemotherapeutic for controlling and treating ectoparasite diseases in farmed freshwater fish because of its effectiveness and low cost, but this compound may not be used in high ... Mostrar Tudo |
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Thesagro: |
Peixe de Água Doce. |
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Thesaurus NAL: |
Aquaculture; Fish; Sodium chloride. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146642/1/CPAF-AP-2022-Toxicity-physiological-histopathological-handling-growth-and-antiparasitic-effects-of-the-sodium-chloride.pdf
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Marc: |
LEADER 02305naa a2200181 a 4500
001 2146642
005 2022-11-10
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/are.15616$2DOI
100 1 $aTAVARES-DIAS, M.
245 $aToxicity, physiological, histopathological, handling, growth and antiparasitic effects of the sodium chloride (salt) in the freshwater fish aquaculture.$h[electronic resource]
260 $c2022
520 $aThis paper provides the currently available knowledge in the literature regarding the use of sodium chloride (NaCl) in freshwater fish aquaculture and aquaria as related to toxicity, growth performance, transportation, physiology, immunity, histomorphology and antiparasitic treatment. This review assessed and discussed all of these factors, as well as the potential strategies available to be used in fish farming. Acute toxicity to NaCl varies widely among fish species (3.5?150.0 g L?1) depending on some environment factors, and many fish species are sensitive to concentrations near those required for their development, growth or for controlling and treating parasites. Acute exposure to NaCl may lead to mortality in different fish species, cause changes in feeding and swimming behaviour, as well as in growth performance and histomorphology of gills, while sublethal concentrations are less harmful. To reduce stress during transport of freshwater fish, concentrations of 1.0?10.0 g L?1 of NaCl in water have been tested for some fish species. Data have shown that survival, body growth of fish, food intake and stimulation of food conversion are affected by the NaCl concentration. Moreover, the effects of NaCl on the immune system, physiology and behaviour must also be considered. Sodium chloride may be a chemotherapeutic for controlling and treating ectoparasite diseases in farmed freshwater fish because of its effectiveness and low cost, but this compound may not be used in high or extreme toxic concentrations, since the maximum tolerance may be near the therapeutic doses. Therefore, this chemical product should be used with parsimony in fish farming.
650 $aAquaculture
650 $aFish
650 $aSodium chloride
650 $aPeixe de Água Doce
773 $tAquaculture Research$gv. 53, n. 3, p. 715-734, Feb. 2022.
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Embrapa Amapá (CPAF-AP) |
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