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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
21/08/2017 |
Data da última atualização: |
06/09/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BRITO, D. Q.; PASSOS, C. J. S.; MUNIZ, D. H. de F.; OLIVEIRA FILHO, E. C. de. |
Afiliação: |
DARLAN Q. BRITO; CARLOS JOSÉ S. PASSOS; DAPHNE HELOISA DE FREITAS MUNIZ, CPAC; EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC. |
Título: |
Aquatic ecotoxicity of ashes from Brazilian savanna wildfires. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Environmental Science and Pollution Research, v. 24, n. 24, p. 19671-19682, August 2017. |
DOI: |
10.1007/s11356-017-9578-0 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: In a global scenario of climate change, several studies have predicted an increase in fires in different parts of the world. With the occurrence of rains following the fires in the Brazilian savanna (Cerrado biome), the compounds present in ashes may enter aquatic environments and cause adverse effects to these ecosystems. In this context, this study evaluated the potential toxicity of ashes from two areas of Cerrado and an area of pasture, through ecotoxicological bioassays and using three aquatic species from distinct trophic levels, which were exposed to different dilutions of ashes: the microcrustacean Ceriodaphnia dubia, the fish Danio rerio and the mollusc Biomphalaria glabrata. The ashes from the three sampled areas showed higher concentrations of some elements in relation to the soil samples (B, Ca, K, Mg, Mn, P, S, Si, Sr, Zn), but only a small quantity of these compounds was solubilised. Our data showed that all ash samples caused acute toxicity to C. dubia (48hs-LC50 = 13.4 g L?1; 48hs-LC50 = 6.33 g L?1; 48hs-LC50 = 9.73 g L?1 respectively for transition area, pasture, typical cerrado areas), while in relation to D. rerio and B. glabrata, no acute toxicity was observed when they were exposed to ashes from native Cerrado vegetation and pasture areas. Ashes from a transition area showed toxicity for D. rerio (48hs-LC50 = 25.0 g L?1); possibly, this was due to the combination of multiple preponderant inorganic elements of ashes with other organic compounds not analysed, such as polycyclic aromatic hydrocarbons (PAHs). In summary, these results suggest that wildfires may pose risks to zooplankton communities and emphasize the need for more studies to better understand the complexity of the ecological effects of fire on aquatic ecosystems. MenosAbstract: In a global scenario of climate change, several studies have predicted an increase in fires in different parts of the world. With the occurrence of rains following the fires in the Brazilian savanna (Cerrado biome), the compounds present in ashes may enter aquatic environments and cause adverse effects to these ecosystems. In this context, this study evaluated the potential toxicity of ashes from two areas of Cerrado and an area of pasture, through ecotoxicological bioassays and using three aquatic species from distinct trophic levels, which were exposed to different dilutions of ashes: the microcrustacean Ceriodaphnia dubia, the fish Danio rerio and the mollusc Biomphalaria glabrata. The ashes from the three sampled areas showed higher concentrations of some elements in relation to the soil samples (B, Ca, K, Mg, Mn, P, S, Si, Sr, Zn), but only a small quantity of these compounds was solubilised. Our data showed that all ash samples caused acute toxicity to C. dubia (48hs-LC50 = 13.4 g L?1; 48hs-LC50 = 6.33 g L?1; 48hs-LC50 = 9.73 g L?1 respectively for transition area, pasture, typical cerrado areas), while in relation to D. rerio and B. glabrata, no acute toxicity was observed when they were exposed to ashes from native Cerrado vegetation and pasture areas. Ashes from a transition area showed toxicity for D. rerio (48hs-LC50 = 25.0 g L?1); possibly, this was due to the combination of multiple preponderant inorganic elements of ashes with other organic compounds ... Mostrar Tudo |
Thesagro: |
Cerrado; Fogo; Organismo aquático; Queimada. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02420naa a2200217 a 4500 001 2074231 005 2017-09-06 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1007/s11356-017-9578-0$2DOI 100 1 $aBRITO, D. Q. 245 $aAquatic ecotoxicity of ashes from Brazilian savanna wildfires. 260 $c2017 520 $aAbstract: In a global scenario of climate change, several studies have predicted an increase in fires in different parts of the world. With the occurrence of rains following the fires in the Brazilian savanna (Cerrado biome), the compounds present in ashes may enter aquatic environments and cause adverse effects to these ecosystems. In this context, this study evaluated the potential toxicity of ashes from two areas of Cerrado and an area of pasture, through ecotoxicological bioassays and using three aquatic species from distinct trophic levels, which were exposed to different dilutions of ashes: the microcrustacean Ceriodaphnia dubia, the fish Danio rerio and the mollusc Biomphalaria glabrata. The ashes from the three sampled areas showed higher concentrations of some elements in relation to the soil samples (B, Ca, K, Mg, Mn, P, S, Si, Sr, Zn), but only a small quantity of these compounds was solubilised. Our data showed that all ash samples caused acute toxicity to C. dubia (48hs-LC50 = 13.4 g L?1; 48hs-LC50 = 6.33 g L?1; 48hs-LC50 = 9.73 g L?1 respectively for transition area, pasture, typical cerrado areas), while in relation to D. rerio and B. glabrata, no acute toxicity was observed when they were exposed to ashes from native Cerrado vegetation and pasture areas. Ashes from a transition area showed toxicity for D. rerio (48hs-LC50 = 25.0 g L?1); possibly, this was due to the combination of multiple preponderant inorganic elements of ashes with other organic compounds not analysed, such as polycyclic aromatic hydrocarbons (PAHs). In summary, these results suggest that wildfires may pose risks to zooplankton communities and emphasize the need for more studies to better understand the complexity of the ecological effects of fire on aquatic ecosystems. 650 $aCerrado 650 $aFogo 650 $aOrganismo aquático 650 $aQueimada 700 1 $aPASSOS, C. J. S. 700 1 $aMUNIZ, D. H. de F. 700 1 $aOLIVEIRA FILHO, E. C. de 773 $tEnvironmental Science and Pollution Research$gv. 24, n. 24, p. 19671-19682, August 2017.
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17. | | RIBEIRO, M. R.; OLIVEIRA-FILHO, E. C. de; SILVA, M. C. Análise microbiológica e físico-química de ambientes hídricos do Parque Águas Claras. In: CONGRESSO DE ENSINO, PESQUISA E EXTENSÃO; ENCONTRO DE INICIAÇÃO CIENTÍFICA DO UNICEUB, 8., 2010, Brasília, DF. Pensar Brasília: cenários e perspectivas da educação superior. Brasília, DF: UNICEUB, 2010. p. 107Tipo: Resumo em Anais de Congresso |
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18. | | OLIVEIRA FILHO, E. C. de; GERALDINO, B. R.; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R. Acute Toxicity of Endosulfan, Nonylphenol Ethoxylate, and Ethanol to Different Life Stages of the Freshwater Snail Biomphalaria tenagophila (Orbigny, 1835). Bulletin of Environmental Contamination and Toxicology, v. 75, n. 6, p. 1185-1190, December 2005.Tipo: Artigo em Periódico Indexado |
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