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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
04/01/2022 |
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Autoria: |
DURIEZ, M. A. de M.; MELO, M. E. C. C. M.; JOHAS, R. A. L.; ARAUJO, W. S. de. |
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Afiliação: |
MARIA AMELIA DE MORAES DURIEZ, CNPS; M. E. C. C. M. MELO, SNLCS; RUTH ANDRADE LEAL JOHAS, CNPS; WILSON SANT ANNA DE ARAUJO, CNPS. |
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Título: |
Apparent ecec in some brazilian soils with variable charges determined using three different extractors |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
In: INTERNATIONAL SOIL CLASSIFICATION WORKSHOP, 8., 1986, Rio de Janeiro. Classification, characterization and utilization of oxisols: proceedings. Rio de Janeiro: EMBRAPA-SNLCS: USDA-SMSS: University of Puerto Rico, 1988. pt. 1, p. 49-55. |
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Idioma: |
Inglês |
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Conteúdo: |
This is a study of the relationships among three different extractors for the determination of apparent ECEC values in 40 soil samples with dominant variable charges selected from 25 soil pedons. In the first method (Servico Nacional de Levantamento e Conservacao de Solos), N KC1 was used to extract calcium, magnesium, and extractable acidity, and North Carolina extractor was used for sodium and potassium. The second method used NH4OAc for calcium, magnesium, sodium, and potassium and the same values of NKC1 for extractable acidity. The third one used unbuffered dilute silver thiourea (AgTU) solution (0.01MAg+) for measuring exchangeable bases and extractable acidity. The apparent ECEC was obtained by the sum of all cations expressed in meq/100g soil or meq/100g clay. Potassium and sodium were measured by flame photometry, calcium and magnesium by atomic absorption spectro photometry, and extractable acidity by volumetric titration with dilute NaOH using phenolfralein as indicator. All soil samples used satisfied the criteria for low activity caly: apparent ECEC < 12 meq/100g 100g caly. The apparent ECEC values are highly correlated when referred to 100g of soil or 100g of clay. According to statistical analysis and tests of paired observations, AgTU extractor is significantly different from the others. |
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Thesagro: |
Classificação do Solo. |
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Thesaurus Nal: |
Oxisols. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/229928/1/Apparent-ecec-in-some-brazilian-soils-1988.pdf
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Marc: |
LEADER 02072nam a2200169 a 4500
001 1327984
005 2022-01-04
008 1988 bl uuuu u00u1 u #d
100 1 $aDURIEZ, M. A. de M.
245 $aApparent ecec in some brazilian soils with variable charges determined using three different extractors$h[electronic resource]
260 $aIn: INTERNATIONAL SOIL CLASSIFICATION WORKSHOP, 8., 1986, Rio de Janeiro. Classification, characterization and utilization of oxisols: proceedings. Rio de Janeiro: EMBRAPA-SNLCS: USDA-SMSS: University of Puerto Rico, 1988. pt. 1, p. 49-55.$c1988
520 $aThis is a study of the relationships among three different extractors for the determination of apparent ECEC values in 40 soil samples with dominant variable charges selected from 25 soil pedons. In the first method (Servico Nacional de Levantamento e Conservacao de Solos), N KC1 was used to extract calcium, magnesium, and extractable acidity, and North Carolina extractor was used for sodium and potassium. The second method used NH4OAc for calcium, magnesium, sodium, and potassium and the same values of NKC1 for extractable acidity. The third one used unbuffered dilute silver thiourea (AgTU) solution (0.01MAg+) for measuring exchangeable bases and extractable acidity. The apparent ECEC was obtained by the sum of all cations expressed in meq/100g soil or meq/100g clay. Potassium and sodium were measured by flame photometry, calcium and magnesium by atomic absorption spectro photometry, and extractable acidity by volumetric titration with dilute NaOH using phenolfralein as indicator. All soil samples used satisfied the criteria for low activity caly: apparent ECEC < 12 meq/100g 100g caly. The apparent ECEC values are highly correlated when referred to 100g of soil or 100g of clay. According to statistical analysis and tests of paired observations, AgTU extractor is significantly different from the others.
650 $aOxisols
650 $aClassificação do Solo
700 1 $aMELO, M. E. C. C. M.
700 1 $aJOHAS, R. A. L.
700 1 $aARAUJO, W. S. de
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Registro original: |
Embrapa Solos (CNPS) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
21/07/2014 |
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Data da última atualização: |
29/05/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
TAVARES-DIAS, M; ARAÚJO, C. S. O.; BARROS, M. S.; VIANA, G. M. |
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Afiliação: |
MARCOS TAVARES-DIAS, CPAF-AP. |
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Título: |
New hosts and distribution records of Braga patagonica, a parasite cymothoidae of fishes from the Amazon. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Brazilian Journal of Aquatic Science and Technology, Itajai, v. 18, n. 1, p. 91-97, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Specimens of Braga patagonica Schiödte & Meinert, 1884 (Isopoda: Cymothoidae) from freshwater fishes deposited in Ichthyological Collection of Amazon National Research Institute (INPA), in central Amazon and from fishes from eastern Amazon (Brazil) were investigated. Prevalence, infection intensity and body measures of B. patagonica for different populations of this cymothoid in wild fishes species from Amazon were carried out. Four species of Serrasalmidae, one Characidae, one Cichlidae, one Cynodontidae, one Curimatidae, one Acestrorhynchidae and one Sciaenidae were recorded as new hosts for B. patagonica in the Amazon. This study indicates a low intensity and low parasitic specificity of B. patagonica, and also recorded the first parasitism by this ectoparasite in farmed Colossoma macropomum, describing its highly pathogenic effect. |
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Palavras-Chave: |
Animal parasit; Crustacean; Cymothoid; Parasito animal. |
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Thesagro: |
Crustáceo; Peixe de água doce. |
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Thesaurus NAL: |
freshwater fish. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/105212/1/CPAF-AP-2014-New-hosts-and-distribution.pdf
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Marc: |
LEADER 01595naa a2200241 a 4500
001 1991066
005 2019-05-29
008 2014 bl uuuu u00u1 u #d
100 1 $aTAVARES-DIAS, M
245 $aNew hosts and distribution records of Braga patagonica, a parasite cymothoidae of fishes from the Amazon.$h[electronic resource]
260 $c2014
520 $aSpecimens of Braga patagonica Schiödte & Meinert, 1884 (Isopoda: Cymothoidae) from freshwater fishes deposited in Ichthyological Collection of Amazon National Research Institute (INPA), in central Amazon and from fishes from eastern Amazon (Brazil) were investigated. Prevalence, infection intensity and body measures of B. patagonica for different populations of this cymothoid in wild fishes species from Amazon were carried out. Four species of Serrasalmidae, one Characidae, one Cichlidae, one Cynodontidae, one Curimatidae, one Acestrorhynchidae and one Sciaenidae were recorded as new hosts for B. patagonica in the Amazon. This study indicates a low intensity and low parasitic specificity of B. patagonica, and also recorded the first parasitism by this ectoparasite in farmed Colossoma macropomum, describing its highly pathogenic effect.
650 $afreshwater fish
650 $aCrustáceo
650 $aPeixe de água doce
653 $aAnimal parasit
653 $aCrustacean
653 $aCymothoid
653 $aParasito animal
700 1 $aARAÚJO, C. S. O.
700 1 $aBARROS, M. S.
700 1 $aVIANA, G. M.
773 $tBrazilian Journal of Aquatic Science and Technology, Itajai$gv. 18, n. 1, p. 91-97, 2014.
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Embrapa Amapá (CPAF-AP) |
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