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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
07/01/2009 |
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Data da última atualização: |
19/07/2016 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PIRES, A. M. M.; ABREU, C. A. de; COSCIONE, A. R.; SILVA, V. A, da; RAMOS, N. P. |
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Afiliação: |
ADRIANA MARLENE MORENO PIRES, CNPMA; Cleide A. de Abreu, IAC; Aline Renee Coscione, IAC; Vinícius Alberti da Silva, Estagiário-Embrapa Meio Ambiente; NILZA PATRICIA RAMOS, CNPMA. |
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Título: |
Initial growth of sunflower in soils with high concentrations of boron and heavy metals. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL SUNFLOWER CONFERENCE, 17., 2008, Córdoba. Proceedings... Córdoba: Consejería de Agricultura y Pesca, 2008. v.2, p.315-318. |
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Idioma: |
Inglês |
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Conteúdo: |
Phytoremediation studies have been conducted in an area contaminated by heavy metals, located in Piracicaba - SP, Brazil. This area was contaminated accidentally by the addition of auto scrap shredding to the soil and was limed later to reduce heavy metal mobility in the environment. Previous characterization showed that it also presents high concentration of boron, which has limited the initial plant development of some species. As sunflower plants require a high boron supply and the literature describes its use in the phytoremediation of soils contaminated with heavy metals under some conditions, the aim of this work was to evaluate its potential for the remediation of this area. In the present study, the results of preliminary tests are presented, aiming at the evaluation of sunflower plant germination and its initial development when cultivated in the contaminated soil described. Two sunflower hybrids were sown in soils treated with different rates of boron and in the soil from the contaminated area in study. The results showed that sunflower plants had a normal initial development, even in the soil from the contaminated area. Therefore, sunflower is a promising crop and further studies will be developed to evaluate the sunflower efficiency in phytoextraction or phytostabilization of heavy metals in areas where boron contamination also occurs, as is the case in the study area. |
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Palavras-Chave: |
Fitoremediação. |
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Thesagro: |
Girassol; Metal Pesado. |
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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/145580/1/2008AA-067.pdf
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Marc: |
LEADER 02080nam a2200193 a 4500
001 1016064
005 2016-07-19
008 2008 bl uuuu u00u1 u #d
100 1 $aPIRES, A. M. M.
245 $aInitial growth of sunflower in soils with high concentrations of boron and heavy metals.$h[electronic resource]
260 $aIn: INTERNATIONAL SUNFLOWER CONFERENCE, 17., 2008, Córdoba. Proceedings... Córdoba: Consejería de Agricultura y Pesca, 2008. v.2, p.315-318.$c2008
520 $aPhytoremediation studies have been conducted in an area contaminated by heavy metals, located in Piracicaba - SP, Brazil. This area was contaminated accidentally by the addition of auto scrap shredding to the soil and was limed later to reduce heavy metal mobility in the environment. Previous characterization showed that it also presents high concentration of boron, which has limited the initial plant development of some species. As sunflower plants require a high boron supply and the literature describes its use in the phytoremediation of soils contaminated with heavy metals under some conditions, the aim of this work was to evaluate its potential for the remediation of this area. In the present study, the results of preliminary tests are presented, aiming at the evaluation of sunflower plant germination and its initial development when cultivated in the contaminated soil described. Two sunflower hybrids were sown in soils treated with different rates of boron and in the soil from the contaminated area in study. The results showed that sunflower plants had a normal initial development, even in the soil from the contaminated area. Therefore, sunflower is a promising crop and further studies will be developed to evaluate the sunflower efficiency in phytoextraction or phytostabilization of heavy metals in areas where boron contamination also occurs, as is the case in the study area.
650 $aGirassol
650 $aMetal Pesado
653 $aFitoremediação
700 1 $aABREU, C. A. de
700 1 $aCOSCIONE, A. R.
700 1 $aSILVA, V. A, da
700 1 $aRAMOS, N. P.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
09/06/2008 |
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Data da última atualização: |
17/11/2015 |
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Autoria: |
CHAER, G. M. |
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Afiliação: |
Guilherme Montandon Chaer, Embrapa Agrobiologia. |
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Título: |
Response of soil microbial communities to physical and chemical disturbances: implications for soil quality and land use sustainability. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
2008. 136 p. Tese (Doutorado) - Oregon State University, Oregon, USA. |
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Idioma: |
Inglês |
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Notas: |
Oregon State University.
Orientador: Peter J. Bottomley. |
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Conteúdo: |
General introduction; Land use impact on the stability of soil microbial community composition and enzyme activities to heat shock; Shifts in microbial community composition and physiological profiles across a gradient of induced soil degradation (GRIND); Development and validation of a soil quality index based on the equilibrium between soil organic matter and biochemical properties in an undisturbed forest ecosystem.
The objectives of this thesis were to evaluate the responses of soil microbial communities to physical and chemical disturbances, and associate these responses with soil functional stability and changes in soil quality. The first study consisted of application of heat shocks (HS) to soils with contrasting land use history to evaluate differences in the stability of soil enzymes (laccase, cellulase and fluorescein diacetate hydrolysis) and microbial community composition as determined by phospholipid fatty acid (PLFA) analysis. The conversion of land use from forest to agriculture resulted in a new microbial community that was less functionally stable. Loss of stability was indicated by the reduced of laccase and cellulase activities in the agricultural soil, which suggested a less diverse community of microorganisms capable of producing these enzymes. The second study examined changes in microbial community composition and diversity that occurred across a gradient of soil disturbance. Disturbances were simulated by tillage events applied at different intensities to a 12-year-old fallow area. These treatments caused degradation of several soil physico-chemical properties, and alterations in microbial structure based on PLFA and terminal restriction fragment length polymorphism (T-RFLP) analyses, and in metabolic potential based on community level physiological profiles (CLPPs). Multivariate ordination of soil properties revealed the formation of a linear gradient of soil degradation that was significantly correlated with CLPPs, but not with T-RFLP and PLFA profiles. Nevertheless, changes observed in microbial community structure were significantly associated with decreases in soil organic C and field hydraulic conductivity. The third study demonstrated that undisturbed forest soils from western Oregon express an equilibrium between soil organic matter and biochemical properties. A model fitted through multiple regression analysis showed that phosphatase activity and microbial biomass were able to explain 97% of the soil organic C in these soils. This equilibrium was disrupted when a soil from an old-growth site was submitted to chemical stresses (Cu addition or pH alteration) and physical disturbances (wet-dry or freeze-thaw cycles). The magnitude of this disruption was consistently expressed by the ratio between soil C predicted by the model (Cp), and soil C that was measured (Cm). This ratio is proposed as biochemically-based index of soil quality. MenosGeneral introduction; Land use impact on the stability of soil microbial community composition and enzyme activities to heat shock; Shifts in microbial community composition and physiological profiles across a gradient of induced soil degradation (GRIND); Development and validation of a soil quality index based on the equilibrium between soil organic matter and biochemical properties in an undisturbed forest ecosystem.
The objectives of this thesis were to evaluate the responses of soil microbial communities to physical and chemical disturbances, and associate these responses with soil functional stability and changes in soil quality. The first study consisted of application of heat shocks (HS) to soils with contrasting land use history to evaluate differences in the stability of soil enzymes (laccase, cellulase and fluorescein diacetate hydrolysis) and microbial community composition as determined by phospholipid fatty acid (PLFA) analysis. The conversion of land use from forest to agriculture resulted in a new microbial community that was less functionally stable. Loss of stability was indicated by the reduced of laccase and cellulase activities in the agricultural soil, which suggested a less diverse community of microorganisms capable of producing these enzymes. The second study examined changes in microbial community composition and diversity that occurred across a gradient of soil disturbance. Disturbances were simulated by tillage events applied at different intensiti... Mostrar Tudo |
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Palavras-Chave: |
Degradação do solo; Qualidade do solo; Solo microbiano; Sustentabilidade; Utilização da terra. |
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Thesagro: |
Ecossistema. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03604nam a2200193 a 4500
001 1629979
005 2015-11-17
008 2008 bl uuuu m 00u1 u #d
100 1 $aCHAER, G. M.
245 $aResponse of soil microbial communities to physical and chemical disturbances$bimplications for soil quality and land use sustainability.
260 $a2008. 136 p. Tese (Doutorado) - Oregon State University, Oregon, USA.$c2008
500 $aOregon State University. Orientador: Peter J. Bottomley.
520 $aGeneral introduction; Land use impact on the stability of soil microbial community composition and enzyme activities to heat shock; Shifts in microbial community composition and physiological profiles across a gradient of induced soil degradation (GRIND); Development and validation of a soil quality index based on the equilibrium between soil organic matter and biochemical properties in an undisturbed forest ecosystem. The objectives of this thesis were to evaluate the responses of soil microbial communities to physical and chemical disturbances, and associate these responses with soil functional stability and changes in soil quality. The first study consisted of application of heat shocks (HS) to soils with contrasting land use history to evaluate differences in the stability of soil enzymes (laccase, cellulase and fluorescein diacetate hydrolysis) and microbial community composition as determined by phospholipid fatty acid (PLFA) analysis. The conversion of land use from forest to agriculture resulted in a new microbial community that was less functionally stable. Loss of stability was indicated by the reduced of laccase and cellulase activities in the agricultural soil, which suggested a less diverse community of microorganisms capable of producing these enzymes. The second study examined changes in microbial community composition and diversity that occurred across a gradient of soil disturbance. Disturbances were simulated by tillage events applied at different intensities to a 12-year-old fallow area. These treatments caused degradation of several soil physico-chemical properties, and alterations in microbial structure based on PLFA and terminal restriction fragment length polymorphism (T-RFLP) analyses, and in metabolic potential based on community level physiological profiles (CLPPs). Multivariate ordination of soil properties revealed the formation of a linear gradient of soil degradation that was significantly correlated with CLPPs, but not with T-RFLP and PLFA profiles. Nevertheless, changes observed in microbial community structure were significantly associated with decreases in soil organic C and field hydraulic conductivity. The third study demonstrated that undisturbed forest soils from western Oregon express an equilibrium between soil organic matter and biochemical properties. A model fitted through multiple regression analysis showed that phosphatase activity and microbial biomass were able to explain 97% of the soil organic C in these soils. This equilibrium was disrupted when a soil from an old-growth site was submitted to chemical stresses (Cu addition or pH alteration) and physical disturbances (wet-dry or freeze-thaw cycles). The magnitude of this disruption was consistently expressed by the ratio between soil C predicted by the model (Cp), and soil C that was measured (Cm). This ratio is proposed as biochemically-based index of soil quality.
650 $aEcossistema
653 $aDegradação do solo
653 $aQualidade do solo
653 $aSolo microbiano
653 $aSustentabilidade
653 $aUtilização da terra
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