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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
13/01/1998 |
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Data da última atualização: |
23/01/2007 |
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Autoria: |
COCHRANE, T. T. |
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Título: |
Regional soil differentiation of neotropical savannas. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
In: SARMIENTO, G. (Comp.). Las sabanas americanas: aspecto de su biogeografia, ecologia y utilizacion. Merida: Universidad de Los Andes, 1990. |
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Páginas: |
p.99-125. |
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Idioma: |
Inglês |
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Notas: |
Apresentado no: Simposio organizado em Guanare, Venezuela, sob os auspicios do Programa Decada de los Tropicos (IUBS, MAB-UNESCO). |
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Conteúdo: |
Although the savannas of tropical America have been used since colonial times for beef cattle raising, and more recently in the case of Brasil, Colombian and Venezuela for an increasing amount of agricultural production, soil research has largely been confined to a few experimental stations and the compilation of reconnaissance soil surveys. This has led to conflicting opinions concerning the role of soil in the development and maintenance of the savanna condition as regional differences could not be adequately compared. Notwithstanding, there is accumulating evidence that the characteristics of the savanna soils, especially their chemical limitations, are intimately linked with ecology, and the successful management of the savanna. Thus the objectve of this overview was to summarize what is known concerning the savanna soils. to indicate what should be studied more intensively, and to propose a means of carrying that research. The overview makes a fundamental distiction between poorly drained and well drained savannas, but emphasizes the importance of the presence of well drained soils in predominantly poorly drained savannas and vice-versa. The poorly drained savannas soils, apart from their physical problems caused by water-logging may also have chemical limitations including iron toxicity. For the well drained savannas, firm evidence has surfaced of: a) a common climatic predisposition influencing their formation; their distinctive total wet season potential evapotranspiration regime which is different from other physiognomic vegetation classes throgh tropical America and, b)the occurrence of serious soil chemical limitations, icluding deficiency leves of nutrients as P,S,K,Ca and some trace elements, toxicity levels of AL or Mn, and nutrient inbalances Ca/Mg in central Brasil and Ca/k and possibly Mg/K in the Colombian llanos. Nutrient problems in one from or another appear to be ubiquitous, and influence savanna vegetation. However, they differ from region to region, and work designed to identify these limitation is considered of maximum priority. This will require a detailed comparative study of key areas savannas soils, and especially their chemical properties. The problem of understanding the soil conditions of the savannas is only a part of a global challenge to better understand and compare soils through the world. To meet this need, the international Soil Science Society has recently developed a project titled the "World Soil and Terrain Digital Data Base", acronym SOTER, with the objective of using emerging information technology, satellite and radar imagery, and modern soil analytical techniques, to construct a world soils and terrain computerizer data base. Consequently it is suggested that this proiect be implemented in selected savanna regions of tropical America, and latter expanded to other savanna regions of the world, to provide an indepth diagnosis of theis soil limitations, and to facilitate their comparison not only in the context of savannas but also with other acosystems. The project would also contribute to the development of a global framework for biologically oriented research over the biosphere. MenosAlthough the savannas of tropical America have been used since colonial times for beef cattle raising, and more recently in the case of Brasil, Colombian and Venezuela for an increasing amount of agricultural production, soil research has largely been confined to a few experimental stations and the compilation of reconnaissance soil surveys. This has led to conflicting opinions concerning the role of soil in the development and maintenance of the savanna condition as regional differences could not be adequately compared. Notwithstanding, there is accumulating evidence that the characteristics of the savanna soils, especially their chemical limitations, are intimately linked with ecology, and the successful management of the savanna. Thus the objectve of this overview was to summarize what is known concerning the savanna soils. to indicate what should be studied more intensively, and to propose a means of carrying that research. The overview makes a fundamental distiction between poorly drained and well drained savannas, but emphasizes the importance of the presence of well drained soils in predominantly poorly drained savannas and vice-versa. The poorly drained savannas soils, apart from their physical problems caused by water-logging may also have chemical limitations including iron toxicity. For the well drained savannas, firm evidence has surfaced of: a) a common climatic predisposition influencing their formation; their distinctive total wet season potential evapotranspi... Mostrar Tudo |
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Palavras-Chave: |
Clima: Deficiencia do solo; Neotropical region; Regiao neotropical; Savana; Soil deficiencies. |
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Thesagro: |
Cerrado; Fertilidade do Solo; Solo; Toxidez. |
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Thesaurus Nal: |
climate; savannas; soil; soil fertility; toxicity. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 04179naa a2200313 a 4500
001 1553696
005 2007-01-23
008 1990 bl uuuu u00u1 u #d
100 1 $aCOCHRANE, T. T.
245 $aRegional soil differentiation of neotropical savannas.
260 $c1990
300 $ap.99-125.
500 $aApresentado no: Simposio organizado em Guanare, Venezuela, sob os auspicios do Programa Decada de los Tropicos (IUBS, MAB-UNESCO).
520 $aAlthough the savannas of tropical America have been used since colonial times for beef cattle raising, and more recently in the case of Brasil, Colombian and Venezuela for an increasing amount of agricultural production, soil research has largely been confined to a few experimental stations and the compilation of reconnaissance soil surveys. This has led to conflicting opinions concerning the role of soil in the development and maintenance of the savanna condition as regional differences could not be adequately compared. Notwithstanding, there is accumulating evidence that the characteristics of the savanna soils, especially their chemical limitations, are intimately linked with ecology, and the successful management of the savanna. Thus the objectve of this overview was to summarize what is known concerning the savanna soils. to indicate what should be studied more intensively, and to propose a means of carrying that research. The overview makes a fundamental distiction between poorly drained and well drained savannas, but emphasizes the importance of the presence of well drained soils in predominantly poorly drained savannas and vice-versa. The poorly drained savannas soils, apart from their physical problems caused by water-logging may also have chemical limitations including iron toxicity. For the well drained savannas, firm evidence has surfaced of: a) a common climatic predisposition influencing their formation; their distinctive total wet season potential evapotranspiration regime which is different from other physiognomic vegetation classes throgh tropical America and, b)the occurrence of serious soil chemical limitations, icluding deficiency leves of nutrients as P,S,K,Ca and some trace elements, toxicity levels of AL or Mn, and nutrient inbalances Ca/Mg in central Brasil and Ca/k and possibly Mg/K in the Colombian llanos. Nutrient problems in one from or another appear to be ubiquitous, and influence savanna vegetation. However, they differ from region to region, and work designed to identify these limitation is considered of maximum priority. This will require a detailed comparative study of key areas savannas soils, and especially their chemical properties. The problem of understanding the soil conditions of the savannas is only a part of a global challenge to better understand and compare soils through the world. To meet this need, the international Soil Science Society has recently developed a project titled the "World Soil and Terrain Digital Data Base", acronym SOTER, with the objective of using emerging information technology, satellite and radar imagery, and modern soil analytical techniques, to construct a world soils and terrain computerizer data base. Consequently it is suggested that this proiect be implemented in selected savanna regions of tropical America, and latter expanded to other savanna regions of the world, to provide an indepth diagnosis of theis soil limitations, and to facilitate their comparison not only in the context of savannas but also with other acosystems. The project would also contribute to the development of a global framework for biologically oriented research over the biosphere.
650 $aclimate
650 $asavannas
650 $asoil
650 $asoil fertility
650 $atoxicity
650 $aCerrado
650 $aFertilidade do Solo
650 $aSolo
650 $aToxidez
653 $aClima: Deficiencia do solo
653 $aNeotropical region
653 $aRegiao neotropical
653 $aSavana
653 $aSoil deficiencies
773 $tIn: SARMIENTO, G. (Comp.). Las sabanas americanas: aspecto de su biogeografia, ecologia y utilizacion. Merida: Universidad de Los Andes, 1990.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
19/11/2019 |
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Data da última atualização: |
14/12/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
GOMES, A. C. C.; SILVA, C. M. S. da; SOUSA, J. N.; SILVA, A. F.; PEREIRA, M. C. T. |
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Afiliação: |
AUGUSTO CÉSAR CAVALCANTI GOMES; CARLOS MACIEL SANTANA DA SILVA; JACQUELINE NASCIMENTO SOUSA, CPATSA; ALINEAUREA FLORENTINO SILVA, CPATSA; MARIA CAROLINA TONIZZA PEREIRA. |
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Título: |
Fitorremediação de efluentes de piscicultura contendo compostos nitrogenados e fósforo. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 14., 2019, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2019. |
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Páginas: |
p. 257-262. |
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Série: |
(Embrapa Semiárido. Documentos, 288). |
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ISSN: |
1808-9992 |
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Idioma: |
Português |
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Conteúdo: |
Embora a poluição dos setores aquícolas seja ínfima comparada à poluição dos setores industriais e às atividades domésticas, essa atividade também gera desequilíbrios ambientais. O efluente oriundo das atividades da aquicultura é rico em elementos de nitrogênio e fósforo, ocasionando a alteração do nível trófico do corpo hídrico receptor desse resíduo. Com o objetivo de atenuar a concentração de compostos nitrogenados e fosfatados, foi proposto o uso de macrófitas aquáticas para a fitorremediação. As macrófitas empregadas foram eficientes na remoção de amônia, nitrato, nitrito e fósforo do efluente de piscicultura. Assim, o uso de espécies aquáticas mostrou-se efetivo e como uma alternativa viável para a produção mais sustentável nos setores aquícolas. |
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Palavras-Chave: |
Ecotecnologia; Efluente; Macrófitas aquáticas; Remoção de compostos nitrogenados e do fósforo; Tanques de policloreto. |
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Thesagro: |
Água; Aquicultura; Impacto Ambiental; Piscicultura; Poluição da Água; Qualidade da Água. |
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Thesaurus NAL: |
Natural resources. |
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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/204968/1/Fitorremediacao-de-efluentes.pdf
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Marc: |
LEADER 01899nam a2200337 a 4500
001 2114605
005 2023-12-14
008 2019 bl uuuu u00u1 u #d
022 $a1808-9992
100 1 $aGOMES, A. C. C.
245 $aFitorremediação de efluentes de piscicultura contendo compostos nitrogenados e fósforo.$h[electronic resource]
260 $aIn: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 14., 2019, Petrolina. Anais... Petrolina: Embrapa Semiárido$c2019
300 $ap. 257-262.
490 $a(Embrapa Semiárido. Documentos, 288).
520 $aEmbora a poluição dos setores aquícolas seja ínfima comparada à poluição dos setores industriais e às atividades domésticas, essa atividade também gera desequilíbrios ambientais. O efluente oriundo das atividades da aquicultura é rico em elementos de nitrogênio e fósforo, ocasionando a alteração do nível trófico do corpo hídrico receptor desse resíduo. Com o objetivo de atenuar a concentração de compostos nitrogenados e fosfatados, foi proposto o uso de macrófitas aquáticas para a fitorremediação. As macrófitas empregadas foram eficientes na remoção de amônia, nitrato, nitrito e fósforo do efluente de piscicultura. Assim, o uso de espécies aquáticas mostrou-se efetivo e como uma alternativa viável para a produção mais sustentável nos setores aquícolas.
650 $aNatural resources
650 $aÁgua
650 $aAquicultura
650 $aImpacto Ambiental
650 $aPiscicultura
650 $aPoluição da Água
650 $aQualidade da Água
653 $aEcotecnologia
653 $aEfluente
653 $aMacrófitas aquáticas
653 $aRemoção de compostos nitrogenados e do fósforo
653 $aTanques de policloreto
700 1 $aSILVA, C. M. S. da
700 1 $aSOUSA, J. N.
700 1 $aSILVA, A. F.
700 1 $aPEREIRA, M. C. T.
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