Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)

Detalhes bibliográficos
Autor(a) principal: Moschini-Carlos, Viviane [UNESP]
Data de Publicação: 2009
Outros Autores: Bortoli, Stella, Pinto, Ernani, Nishimura, Paula Yuri, De Freitas, Leandro Gomes [UNESP], Pompêo, Marcelo L.M., Dörr, Felipe
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/225776
Resumo: The Billings Complex and the Guarapiranga System are important strategic reservoirs for the city of Sao Paulo and surrounding areas because the water is used, among other things, for the public water supply. They produce 19,000 liters of water per second and supply water to 5.4 million people. Crude water is transferred from the Taquacetuba branch of the Billings Complex to the Guarapiranga Reservoir to regulate the water level of the reservoir. The objective of this study was to evaluate the water quality in the Taquacetuba branch, focusing on cyanobacteria and cyanotoxins. Surface water samples were collected in February (summer) and July (winter) of 2007. Analyses were conducted of physical, chemical, and biological variables of the water, cyanobacteria richness and density, and the presence of cyanotoxins. The water was classified as eutrophic-hypereutrophic. Cyanobacteria blooms were observed in both collection periods. The cyanobacteria bloom was most significant in July, reflecting lower water transparency and higher levels of total solids, suspended organic matter, chlorophyll-a, and cyanobacteria density in the surface water. Low richness and elevated dominance of the cyanobacteria were found in both periods. Cylin- drospermopsis raciborskii was dominant in February, with 352 661.0 eel mL1, and Microcystis panniformis was dominant in July, with 1 866 725.0 eel mL-1. Three variants of microcystin were found in February (MC-RR, MC-LR, MC-YR), as well as saxitoxin. The same variants of microcystin were found in July, but no saxitoxin was detected. Anatoxin-a and cylin- dropermopsin were not detected in either period. These findings are of great concern because the water in the Taquacetuba branch, which is transferred into the Guarapiranga Reservoir, is not treated nor managed. It is recommended that monitoring be intensified and more effective measures be taken by the responsible agencies to prevent the process of eutrophication and the consequent development of the cyanobacteria and their toxins. © Asociación Ibérica de Limnología, Madrid.
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spelling Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)CyanobecteriaCyanotoxinsEutrophicationReservoirsThe Billings Complex and the Guarapiranga System are important strategic reservoirs for the city of Sao Paulo and surrounding areas because the water is used, among other things, for the public water supply. They produce 19,000 liters of water per second and supply water to 5.4 million people. Crude water is transferred from the Taquacetuba branch of the Billings Complex to the Guarapiranga Reservoir to regulate the water level of the reservoir. The objective of this study was to evaluate the water quality in the Taquacetuba branch, focusing on cyanobacteria and cyanotoxins. Surface water samples were collected in February (summer) and July (winter) of 2007. Analyses were conducted of physical, chemical, and biological variables of the water, cyanobacteria richness and density, and the presence of cyanotoxins. The water was classified as eutrophic-hypereutrophic. Cyanobacteria blooms were observed in both collection periods. The cyanobacteria bloom was most significant in July, reflecting lower water transparency and higher levels of total solids, suspended organic matter, chlorophyll-a, and cyanobacteria density in the surface water. Low richness and elevated dominance of the cyanobacteria were found in both periods. Cylin- drospermopsis raciborskii was dominant in February, with 352 661.0 eel mL1, and Microcystis panniformis was dominant in July, with 1 866 725.0 eel mL-1. Three variants of microcystin were found in February (MC-RR, MC-LR, MC-YR), as well as saxitoxin. The same variants of microcystin were found in July, but no saxitoxin was detected. Anatoxin-a and cylin- dropermopsin were not detected in either period. These findings are of great concern because the water in the Taquacetuba branch, which is transferred into the Guarapiranga Reservoir, is not treated nor managed. It is recommended that monitoring be intensified and more effective measures be taken by the responsible agencies to prevent the process of eutrophication and the consequent development of the cyanobacteria and their toxins. © Asociación Ibérica de Limnología, Madrid.São Paulo State University-UNESP Department of Environmental Engineering, 3 de Marco Avenue n. 511, Sorocaba, São Paulo StateUniversity of São Paulo Institute of Biociências Department of Ecology, Rua do Matão, Trav. 14, no 321, São Paulo-SPUniversity of São Paulo Laboratory of Toxin and Algae Natural Products School Pharmaceutical Sciences, Prof. Lineu Prestes Avenue, 580, São Paulo-SPSão Paulo State University-UNESP Department of Environmental Engineering, 3 de Marco Avenue n. 511, Sorocaba, São Paulo StateUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Moschini-Carlos, Viviane [UNESP]Bortoli, StellaPinto, ErnaniNishimura, Paula YuriDe Freitas, Leandro Gomes [UNESP]Pompêo, Marcelo L.M.Dörr, Felipe2022-04-28T20:59:35Z2022-04-28T20:59:35Z2009-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article273-282Limnetica, v. 28, n. 2, p. 273-282, 2009.0213-8409http://hdl.handle.net/11449/2257762-s2.0-77149147116Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengLimneticainfo:eu-repo/semantics/openAccess2022-04-28T20:59:35Zoai:repositorio.unesp.br:11449/225776Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:48:41.181272Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
title Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
spellingShingle Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
Moschini-Carlos, Viviane [UNESP]
Cyanobecteria
Cyanotoxins
Eutrophication
Reservoirs
title_short Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
title_full Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
title_fullStr Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
title_full_unstemmed Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
title_sort Cyanobacteria and cyanotoxin in the billings reservoir (São Paulo, SP, Brazil)
author Moschini-Carlos, Viviane [UNESP]
author_facet Moschini-Carlos, Viviane [UNESP]
Bortoli, Stella
Pinto, Ernani
Nishimura, Paula Yuri
De Freitas, Leandro Gomes [UNESP]
Pompêo, Marcelo L.M.
Dörr, Felipe
author_role author
author2 Bortoli, Stella
Pinto, Ernani
Nishimura, Paula Yuri
De Freitas, Leandro Gomes [UNESP]
Pompêo, Marcelo L.M.
Dörr, Felipe
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Moschini-Carlos, Viviane [UNESP]
Bortoli, Stella
Pinto, Ernani
Nishimura, Paula Yuri
De Freitas, Leandro Gomes [UNESP]
Pompêo, Marcelo L.M.
Dörr, Felipe
dc.subject.por.fl_str_mv Cyanobecteria
Cyanotoxins
Eutrophication
Reservoirs
topic Cyanobecteria
Cyanotoxins
Eutrophication
Reservoirs
description The Billings Complex and the Guarapiranga System are important strategic reservoirs for the city of Sao Paulo and surrounding areas because the water is used, among other things, for the public water supply. They produce 19,000 liters of water per second and supply water to 5.4 million people. Crude water is transferred from the Taquacetuba branch of the Billings Complex to the Guarapiranga Reservoir to regulate the water level of the reservoir. The objective of this study was to evaluate the water quality in the Taquacetuba branch, focusing on cyanobacteria and cyanotoxins. Surface water samples were collected in February (summer) and July (winter) of 2007. Analyses were conducted of physical, chemical, and biological variables of the water, cyanobacteria richness and density, and the presence of cyanotoxins. The water was classified as eutrophic-hypereutrophic. Cyanobacteria blooms were observed in both collection periods. The cyanobacteria bloom was most significant in July, reflecting lower water transparency and higher levels of total solids, suspended organic matter, chlorophyll-a, and cyanobacteria density in the surface water. Low richness and elevated dominance of the cyanobacteria were found in both periods. Cylin- drospermopsis raciborskii was dominant in February, with 352 661.0 eel mL1, and Microcystis panniformis was dominant in July, with 1 866 725.0 eel mL-1. Three variants of microcystin were found in February (MC-RR, MC-LR, MC-YR), as well as saxitoxin. The same variants of microcystin were found in July, but no saxitoxin was detected. Anatoxin-a and cylin- dropermopsin were not detected in either period. These findings are of great concern because the water in the Taquacetuba branch, which is transferred into the Guarapiranga Reservoir, is not treated nor managed. It is recommended that monitoring be intensified and more effective measures be taken by the responsible agencies to prevent the process of eutrophication and the consequent development of the cyanobacteria and their toxins. © Asociación Ibérica de Limnología, Madrid.
publishDate 2009
dc.date.none.fl_str_mv 2009-12-01
2022-04-28T20:59:35Z
2022-04-28T20:59:35Z
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 Limnetica, v. 28, n. 2, p. 273-282, 2009.
0213-8409
http://hdl.handle.net/11449/225776
2-s2.0-77149147116
identifier_str_mv Limnetica, v. 28, n. 2, p. 273-282, 2009.
0213-8409
2-s2.0-77149147116
url http://hdl.handle.net/11449/225776
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Limnetica
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 273-282
dc.source.none.fl_str_mv Scopus
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)
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