Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11356-016-7719-5 http://hdl.handle.net/11449/160313 |
Resumo: | The aim of this study was to jointly show the results of three independent ecotoxicological studies performed to investigate pollutants in three Brazilian tropical reservoirs undergoing accelerated eutrophication. In order to accomplish this goal, the full toxicity identification and evaluation procedure (TIE approach) was performed, at Pampulha (Minas Gerais State) and Salto Grande and Bana Bonita reservoirs (Sao Paulo State). Acute and chronic toxicity tests were performed using the cladocerans Daphnia similis and Ceriodaphnia dubia (exotic) and Daphnia laevis and Ceriodaphnia silvestrii (native) as test organisms. Results from TIE procedure stage I indicated the existence of nonpolar organic and filterable compounds in the water from Pampulha, probably cyanotoxins, and oxidants as part of the toxic agents. TIE results for sediments identified ammonia (Pampulha and Salto Grande), organic compounds (Pampulha), metals (Pampulha, Barra Bonita, and Salto Grande), and acidity (Salto Grande) as responsible for toxicity. Whole-sediment remediation experiments for Pampulha reservoir confirmed, through reproduction decrease, ammonia and organic compounds as contaminants. Such pollutants represent threats to aquatic biota and must be prevented. Higher temperatures as predicted from global climate change will severely affect tropical shallow reservoirs, accelerating eutrophication, the release of contaminants from sediments, and increasing toxicity. |
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Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approachEcotoxicologyFreshwater contaminantsCladoceransCyanobacteriaAmmoniaMetalsRemediationThe aim of this study was to jointly show the results of three independent ecotoxicological studies performed to investigate pollutants in three Brazilian tropical reservoirs undergoing accelerated eutrophication. In order to accomplish this goal, the full toxicity identification and evaluation procedure (TIE approach) was performed, at Pampulha (Minas Gerais State) and Salto Grande and Bana Bonita reservoirs (Sao Paulo State). Acute and chronic toxicity tests were performed using the cladocerans Daphnia similis and Ceriodaphnia dubia (exotic) and Daphnia laevis and Ceriodaphnia silvestrii (native) as test organisms. Results from TIE procedure stage I indicated the existence of nonpolar organic and filterable compounds in the water from Pampulha, probably cyanotoxins, and oxidants as part of the toxic agents. TIE results for sediments identified ammonia (Pampulha and Salto Grande), organic compounds (Pampulha), metals (Pampulha, Barra Bonita, and Salto Grande), and acidity (Salto Grande) as responsible for toxicity. Whole-sediment remediation experiments for Pampulha reservoir confirmed, through reproduction decrease, ammonia and organic compounds as contaminants. Such pollutants represent threats to aquatic biota and must be prevented. Higher temperatures as predicted from global climate change will severely affect tropical shallow reservoirs, accelerating eutrophication, the release of contaminants from sediments, and increasing toxicity.Univ Fed Minas Gerais, Biol Sci Inst, Gen Biol Dept, Belo Horizonte, MG, BrazilState Univ Sao Paulo, Ctr Water Resources & Environm Studies, Sao Carlos, SP, BrazilUniv Fed Sao Carlos, Dept Ecol & Evolutionary Biol, Sao Carlos, SP, BrazilUniv Fed Itajuba, Nat Resources Inst, Itajuba, BrazilState Univ Sao Paulo, Ctr Water Resources & Environm Studies, Sao Carlos, SP, BrazilSpringerUniversidade Federal de Minas Gerais (UFMG)Universidade Estadual Paulista (Unesp)Universidade Federal de São Carlos (UFSCar)Univ Fed ItajubaRietzler, A. C.Botta, C. R. [UNESP]Ribeiro, M. M.Rocha, O.Fonseca, A. L.2018-11-26T16:01:21Z2018-11-26T16:01:21Z2018-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article13292-13311application/pdfhttp://dx.doi.org/10.1007/s11356-016-7719-5Environmental Science And Pollution Research. Heidelberg: Springer Heidelberg, v. 25, n. 14, p. 13292-13311, 2018.0944-1344http://hdl.handle.net/11449/16031310.1007/s11356-016-7719-5WOS:000433038500010WOS000433038500010.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEnvironmental Science And Pollution Research0,858info:eu-repo/semantics/openAccess2023-12-24T06:16:29Zoai:repositorio.unesp.br:11449/160313Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-24T06:16:29Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach |
title |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach |
spellingShingle |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach Rietzler, A. C. Ecotoxicology Freshwater contaminants Cladocerans Cyanobacteria Ammonia Metals Remediation |
title_short |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach |
title_full |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach |
title_fullStr |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach |
title_full_unstemmed |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach |
title_sort |
Accelerated eutrophication and toxicity in tropical reservoir water and sediments: an ecotoxicological approach |
author |
Rietzler, A. C. |
author_facet |
Rietzler, A. C. Botta, C. R. [UNESP] Ribeiro, M. M. Rocha, O. Fonseca, A. L. |
author_role |
author |
author2 |
Botta, C. R. [UNESP] Ribeiro, M. M. Rocha, O. Fonseca, A. L. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Minas Gerais (UFMG) Universidade Estadual Paulista (Unesp) Universidade Federal de São Carlos (UFSCar) Univ Fed Itajuba |
dc.contributor.author.fl_str_mv |
Rietzler, A. C. Botta, C. R. [UNESP] Ribeiro, M. M. Rocha, O. Fonseca, A. L. |
dc.subject.por.fl_str_mv |
Ecotoxicology Freshwater contaminants Cladocerans Cyanobacteria Ammonia Metals Remediation |
topic |
Ecotoxicology Freshwater contaminants Cladocerans Cyanobacteria Ammonia Metals Remediation |
description |
The aim of this study was to jointly show the results of three independent ecotoxicological studies performed to investigate pollutants in three Brazilian tropical reservoirs undergoing accelerated eutrophication. In order to accomplish this goal, the full toxicity identification and evaluation procedure (TIE approach) was performed, at Pampulha (Minas Gerais State) and Salto Grande and Bana Bonita reservoirs (Sao Paulo State). Acute and chronic toxicity tests were performed using the cladocerans Daphnia similis and Ceriodaphnia dubia (exotic) and Daphnia laevis and Ceriodaphnia silvestrii (native) as test organisms. Results from TIE procedure stage I indicated the existence of nonpolar organic and filterable compounds in the water from Pampulha, probably cyanotoxins, and oxidants as part of the toxic agents. TIE results for sediments identified ammonia (Pampulha and Salto Grande), organic compounds (Pampulha), metals (Pampulha, Barra Bonita, and Salto Grande), and acidity (Salto Grande) as responsible for toxicity. Whole-sediment remediation experiments for Pampulha reservoir confirmed, through reproduction decrease, ammonia and organic compounds as contaminants. Such pollutants represent threats to aquatic biota and must be prevented. Higher temperatures as predicted from global climate change will severely affect tropical shallow reservoirs, accelerating eutrophication, the release of contaminants from sediments, and increasing toxicity. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-26T16:01:21Z 2018-11-26T16:01:21Z 2018-05-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s11356-016-7719-5 Environmental Science And Pollution Research. Heidelberg: Springer Heidelberg, v. 25, n. 14, p. 13292-13311, 2018. 0944-1344 http://hdl.handle.net/11449/160313 10.1007/s11356-016-7719-5 WOS:000433038500010 WOS000433038500010.pdf |
url |
http://dx.doi.org/10.1007/s11356-016-7719-5 http://hdl.handle.net/11449/160313 |
identifier_str_mv |
Environmental Science And Pollution Research. Heidelberg: Springer Heidelberg, v. 25, n. 14, p. 13292-13311, 2018. 0944-1344 10.1007/s11356-016-7719-5 WOS:000433038500010 WOS000433038500010.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Environmental Science And Pollution Research 0,858 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
13292-13311 application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803650070832218112 |