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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Florestas. |
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Data corrente: |
24/04/2017 |
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Data da última atualização: |
19/01/2022 |
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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: |
BUCH, A. C.; BROWN, G. G.; CORREIA, M. E. F.; LOURENÇATO, L. F.; SILVA-FILHO, E. V. |
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Afiliação: |
ANDRESSA CRISTHY BUCH, UNIVERSIDADE FEDERAL FLUMINENSE; GEORGE GARDNER BROWN, CNPF; MARIA ELIZABETH FERNANDES CORREIA, CNPAB; LÚCIO FÁBIO LOURENÇATO, UNIVERSIDADE FEDERAL FLUMINENSE; EMMANOEL VIEIRA SILVA-FILHO, UNIVERSIDADE FEDERAL FLUMINENSE. |
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Título: |
Ecotoxicology of mercury in tropical forest soils: impact on earthworms. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 589, p. 222-231, July 2017. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2017.02.150 |
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Idioma: |
Inglês |
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Conteúdo: |
Mercury (Hg) is one of the most toxic nonessential trace metals in the environment, with high persistence and bioaccumulation potential, and hence of serious concern to environmental quality and public health. Emitted to the atmosphere, this element can travel long distances, far from emission sources. Hg speciation can lead to Hg contamination of different ecosystem components, as well as biomagnification in trophic food webs. To evaluate the effects of atmospheric Hg deposition in tropical forests, we investigated Hg concentrations in earthworm tissues and soils of two Forest Conservation Units in State of Rio de Janeiro, Brazil. Next, we performed a laboratory study of the biological responses (cast analysis and behavioral, acute, chronic and bioaccumulation ecotoxicological tests) of two earthworms species (Pontoscolex corethrurus and Eisenia andrei) to Hg contamination in tropical artificial soil (TAS) and two natural forest soils (NS) spiked with increasing concentration of HgCl2. Field results showed Hg concentrations up to 13 times higher in earthworm tissues than in forest soils, while in the laboratory Hg accumulation after 91-days of exposure was 25 times greater in spiked-soils with 128 mg Hg kg−1 (dry wt) than in control (unspiked) soils. In all the toxicity tests P. corethrurus showed a higher adaptability or resistance to mercury than E. andrei. The role of earthworms as environmental bioremediators was confirmed in this study, showing their ability to greatly bioaccumulate trace metals while reducing Hg availability in feces. MenosMercury (Hg) is one of the most toxic nonessential trace metals in the environment, with high persistence and bioaccumulation potential, and hence of serious concern to environmental quality and public health. Emitted to the atmosphere, this element can travel long distances, far from emission sources. Hg speciation can lead to Hg contamination of different ecosystem components, as well as biomagnification in trophic food webs. To evaluate the effects of atmospheric Hg deposition in tropical forests, we investigated Hg concentrations in earthworm tissues and soils of two Forest Conservation Units in State of Rio de Janeiro, Brazil. Next, we performed a laboratory study of the biological responses (cast analysis and behavioral, acute, chronic and bioaccumulation ecotoxicological tests) of two earthworms species (Pontoscolex corethrurus and Eisenia andrei) to Hg contamination in tropical artificial soil (TAS) and two natural forest soils (NS) spiked with increasing concentration of HgCl2. Field results showed Hg concentrations up to 13 times higher in earthworm tissues than in forest soils, while in the laboratory Hg accumulation after 91-days of exposure was 25 times greater in spiked-soils with 128 mg Hg kg−1 (dry wt) than in control (unspiked) soils. In all the toxicity tests P. corethrurus showed a higher adaptability or resistance to mercury than E. andrei. The role of earthworms as environmental bioremediators was confirmed in this study, showing their ability to g... Mostrar Tudo |
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Palavras-Chave: |
Cast production; Ecotoxicologia; Terrestrial ecotoxicology; Trace metal. |
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Thesagro: |
Meio ambiente; Mercúrio; Minhoca; Qualidade; Solo florestal. |
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Thesaurus NAL: |
Earthworms; Ecotoxicology; Eisenia andrei; environmental quality; Forest soils; Mercury; Pontoscolex corethrurus; Trace elements. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra
S Ciências Biológicas |
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Marc: |
LEADER 02676naa a2200385 a 4500
001 2082489
005 2022-01-19
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2017.02.150$2DOI
100 1 $aBUCH, A. C.
245 $aEcotoxicology of mercury in tropical forest soils$bimpact on earthworms.$h[electronic resource]
260 $c2017
520 $aMercury (Hg) is one of the most toxic nonessential trace metals in the environment, with high persistence and bioaccumulation potential, and hence of serious concern to environmental quality and public health. Emitted to the atmosphere, this element can travel long distances, far from emission sources. Hg speciation can lead to Hg contamination of different ecosystem components, as well as biomagnification in trophic food webs. To evaluate the effects of atmospheric Hg deposition in tropical forests, we investigated Hg concentrations in earthworm tissues and soils of two Forest Conservation Units in State of Rio de Janeiro, Brazil. Next, we performed a laboratory study of the biological responses (cast analysis and behavioral, acute, chronic and bioaccumulation ecotoxicological tests) of two earthworms species (Pontoscolex corethrurus and Eisenia andrei) to Hg contamination in tropical artificial soil (TAS) and two natural forest soils (NS) spiked with increasing concentration of HgCl2. Field results showed Hg concentrations up to 13 times higher in earthworm tissues than in forest soils, while in the laboratory Hg accumulation after 91-days of exposure was 25 times greater in spiked-soils with 128 mg Hg kg−1 (dry wt) than in control (unspiked) soils. In all the toxicity tests P. corethrurus showed a higher adaptability or resistance to mercury than E. andrei. The role of earthworms as environmental bioremediators was confirmed in this study, showing their ability to greatly bioaccumulate trace metals while reducing Hg availability in feces.
650 $aEarthworms
650 $aEcotoxicology
650 $aEisenia andrei
650 $aenvironmental quality
650 $aForest soils
650 $aMercury
650 $aPontoscolex corethrurus
650 $aTrace elements
650 $aMeio ambiente
650 $aMercúrio
650 $aMinhoca
650 $aQualidade
650 $aSolo florestal
653 $aCast production
653 $aEcotoxicologia
653 $aTerrestrial ecotoxicology
653 $aTrace metal
700 1 $aBROWN, G. G.
700 1 $aCORREIA, M. E. F.
700 1 $aLOURENÇATO, L. F.
700 1 $aSILVA-FILHO, E. V.
773 $tScience of the Total Environment$gv. 589, p. 222-231, July 2017.
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