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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
02/05/2023 |
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Data da última atualização: |
04/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUSA, J. E. S. de; ANDRADE, G. R. P.; ARAUJO FILHO, J. C. de; SANTOS, J. C. B. dos; CORRÊA, M. M.; FERREIRA, T. O.; CAMARGO, P. B. de; ARAÚJO, J. K. S.; SILVA, A. H. N. da; SOUSA, M. G.; SOUZA JÚNIOR, V. S. de. |
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Afiliação: |
JULIET EMILIA SANTOS DE SOUSA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; GABRIEL RAMATIS PUGLIESE ANDRADE, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE; JOSE COELHO DE ARAUJO FILHO, CNPS; JEAN CHEYSON BARROS DOS SANTOS, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; MARCELO METRI CORRÊA, UNIVERSIDADE FEDERAL DO AGRESTE DE PERNAMBUCO; TIAGO OSÓRIO FERREIRA, UNIVERSIDADE DE SÃO PAULO; PLÍNIO BARBOSA DE CAMARGO, UNIVERSIDADE DE SÃO PAULO; JANE KELLY SILVA ARAÚJO, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; ARTUR HENRIQUE NASCIMENTO DA SILVA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; MARILYA GABRYELLA SOUSA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; VALDOMIRO SEVERINO DE SOUZA JÚNIOR, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO. |
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Título: |
Weathering and mineral alteration of metamorphic rocks and genesis of Planosols along a rainfall gradient in Borborema Province, Northeast Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Geoderma Regional, v. 33, e00642, Jun. 2023. |
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DOI: |
https://doi.org/10.1016/j.geodrs.2023.e00642 |
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Idioma: |
Inglês |
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Conteúdo: |
Soils in Northeast Brazil have a correlation with soils in the Northwest Africa, as Planosols are predominant in these regions. However, the weathering and genesis of these soils are little understood, compromising their use and conservation. The present study aimed to investigate weathering and mineralogical changes as well as genesis of Planosols along a pluviometric gradient, considering their formation from gneiss rocks, and analyze climate influence on soil formation. We collected three profiles in different climatic regions of the Brazilian northeastern region and described and classified the samples morphologically. We also performed the physical, chemical, mineralogical, and micromorphological analyses. The results indicated that external material added to soil surface contributed to the formation of surface horizons rich in coarser fractions. Subsurface horizons however were rich in clay (e.g.: P1-2Bn: 433 g kg-1; P2-2B: 427 g kg-1; P3-2Bn1: 429 g kg-1) and were formed from changes of the parent material and the clay formation in situ. Biotite, plagioclases, K-feldspars, and hornblende are the main primary minerals sources for the formation of clay minerals (mainly smectite and kaolinite) from transformation processes and neoformation. Pedoplasmation, monosiallitization, bisiallitization, redoximorphism, and alkalization contributed to the formation of the Planosols studied. Despite incipient soil evolution, the Planosols displayed variation according to the climatic condition. Nevertheless, the incipient mineral alteration favored important soil attributes that could influence agricultural productivity, even in the region with higher precipitation rates. MenosSoils in Northeast Brazil have a correlation with soils in the Northwest Africa, as Planosols are predominant in these regions. However, the weathering and genesis of these soils are little understood, compromising their use and conservation. The present study aimed to investigate weathering and mineralogical changes as well as genesis of Planosols along a pluviometric gradient, considering their formation from gneiss rocks, and analyze climate influence on soil formation. We collected three profiles in different climatic regions of the Brazilian northeastern region and described and classified the samples morphologically. We also performed the physical, chemical, mineralogical, and micromorphological analyses. The results indicated that external material added to soil surface contributed to the formation of surface horizons rich in coarser fractions. Subsurface horizons however were rich in clay (e.g.: P1-2Bn: 433 g kg-1; P2-2B: 427 g kg-1; P3-2Bn1: 429 g kg-1) and were formed from changes of the parent material and the clay formation in situ. Biotite, plagioclases, K-feldspars, and hornblende are the main primary minerals sources for the formation of clay minerals (mainly smectite and kaolinite) from transformation processes and neoformation. Pedoplasmation, monosiallitization, bisiallitization, redoximorphism, and alkalization contributed to the formation of the Planosols studied. Despite incipient soil evolution, the Planosols displayed variation according to the climati... Mostrar Tudo |
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Palavras-Chave: |
Colluviation; Interstratifications. |
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Thesaurus Nal: |
Clay minerals; Sodic soils. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02669naa a2200301 a 4500
001 2153467
005 2023-12-04
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.geodrs.2023.e00642$2DOI
100 1 $aSOUSA, J. E. S. de
245 $aWeathering and mineral alteration of metamorphic rocks and genesis of Planosols along a rainfall gradient in Borborema Province, Northeast Brazil.$h[electronic resource]
260 $c2023
520 $aSoils in Northeast Brazil have a correlation with soils in the Northwest Africa, as Planosols are predominant in these regions. However, the weathering and genesis of these soils are little understood, compromising their use and conservation. The present study aimed to investigate weathering and mineralogical changes as well as genesis of Planosols along a pluviometric gradient, considering their formation from gneiss rocks, and analyze climate influence on soil formation. We collected three profiles in different climatic regions of the Brazilian northeastern region and described and classified the samples morphologically. We also performed the physical, chemical, mineralogical, and micromorphological analyses. The results indicated that external material added to soil surface contributed to the formation of surface horizons rich in coarser fractions. Subsurface horizons however were rich in clay (e.g.: P1-2Bn: 433 g kg-1; P2-2B: 427 g kg-1; P3-2Bn1: 429 g kg-1) and were formed from changes of the parent material and the clay formation in situ. Biotite, plagioclases, K-feldspars, and hornblende are the main primary minerals sources for the formation of clay minerals (mainly smectite and kaolinite) from transformation processes and neoformation. Pedoplasmation, monosiallitization, bisiallitization, redoximorphism, and alkalization contributed to the formation of the Planosols studied. Despite incipient soil evolution, the Planosols displayed variation according to the climatic condition. Nevertheless, the incipient mineral alteration favored important soil attributes that could influence agricultural productivity, even in the region with higher precipitation rates.
650 $aClay minerals
650 $aSodic soils
653 $aColluviation
653 $aInterstratifications
700 1 $aANDRADE, G. R. P.
700 1 $aARAUJO FILHO, J. C. de
700 1 $aSANTOS, J. C. B. dos
700 1 $aCORRÊA, M. M.
700 1 $aFERREIRA, T. O.
700 1 $aCAMARGO, P. B. de
700 1 $aARAÚJO, J. K. S.
700 1 $aSILVA, A. H. N. da
700 1 $aSOUSA, M. G.
700 1 $aSOUZA JÚNIOR, V. S. de
773 $tGeoderma Regional$gv. 33, e00642, Jun. 2023.
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Embrapa Solos (CNPS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
25/05/2009 |
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Data da última atualização: |
24/02/2010 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
OLIVEIRA-FILHO, E. C.; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R. |
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Afiliação: |
Eduardo Cyrino Oliveira-Filho, CPAC; Cesar Koppe Grisolia, UnB; Francisco José Roma Paumgartten, Fiocruz. |
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Título: |
Effects of endosulfan and ethanol on the reproduction of the snail Biomphalaria tenagophila: a multigeneration study. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Chemosphere, v. 75, p. 398-404, 2009. |
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Idioma: |
Inglês |
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Conteúdo: |
Endosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity), and for ETOH were 19.8 mh L -1 for reduction in fecundity and <19.8 mg L -1 for developmental toxicity (hatching retardation). MenosEndosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity),... Mostrar Tudo |
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Palavras-Chave: |
Ecotoxicologia. |
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Thesagro: |
Inseticida. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02144naa a2200169 a 4500
001 1558319
005 2010-02-24
008 2009 bl --- 0-- u #d
100 1 $aOLIVEIRA-FILHO, E. C.
245 $aEffects of endosulfan and ethanol on the reproduction of the snail Biomphalaria tenagophila$ba multigeneration study.
260 $c2009
520 $aEndosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity), and for ETOH were 19.8 mh L -1 for reduction in fecundity and <19.8 mg L -1 for developmental toxicity (hatching retardation).
650 $aInseticida
653 $aEcotoxicologia
700 1 $aGRISOLIA, C. K.
700 1 $aPAUMGARTTEN, F. J. R.
773 $tChemosphere$gv. 75, p. 398-404, 2009.
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