Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4136/ambi-agua.1941 http://hdl.handle.net/11449/169115 |
Resumo: | The objective of this study was to investigate which environmental variables are correlated to the occurrence and dominance of potentially toxic species in Guarapiranga Reservoir, in the metropolitan region of São Paulo/SP - Brazil. Water samples were collected in order to conduct physical, chemical and biologic analyses in the rainy and dry seasons in the reservoir’s upstream and intermediate zones and near its dam. The organisms were microscopically analyzed, identified and quantified, and their dimensions were measured for biomass calculation. The results indicated that the environmental characteristics of each zone of the reservoir are distinct and the biomass, as well as the occurrence of potentially toxic genera of cyanobacteria, vary according to these characteristics. The canonical correspondence analysis showed a correlation between high ammonium levels, low photic zone and neutral-alkaline pH with the biomass of Cylindrospermopsis raciborskii in the rainy season and of Planktolyngbya limnetica in the dry season in the intermediate zone of the reservoir (the Parelheiros zone). The high cyanobacteria biomass and water quality deterioration in the reservoir in the dry season have probably been influenced by the transposition of the Billings reservoir water over an extended period of the year, due to the intense drought of 2014. |
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Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, BrasilEnvironmental factors related to the occurrence of potentially toxic cyanobacteria in guarapiranga reservoir, SP, BrazilBiomassEutrophicationNutrientsThe objective of this study was to investigate which environmental variables are correlated to the occurrence and dominance of potentially toxic species in Guarapiranga Reservoir, in the metropolitan region of São Paulo/SP - Brazil. Water samples were collected in order to conduct physical, chemical and biologic analyses in the rainy and dry seasons in the reservoir’s upstream and intermediate zones and near its dam. The organisms were microscopically analyzed, identified and quantified, and their dimensions were measured for biomass calculation. The results indicated that the environmental characteristics of each zone of the reservoir are distinct and the biomass, as well as the occurrence of potentially toxic genera of cyanobacteria, vary according to these characteristics. The canonical correspondence analysis showed a correlation between high ammonium levels, low photic zone and neutral-alkaline pH with the biomass of Cylindrospermopsis raciborskii in the rainy season and of Planktolyngbya limnetica in the dry season in the intermediate zone of the reservoir (the Parelheiros zone). The high cyanobacteria biomass and water quality deterioration in the reservoir in the dry season have probably been influenced by the transposition of the Billings reservoir water over an extended period of the year, due to the intense drought of 2014.Departamento de Engenharia Ambiental Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Departamento de Ecologia Universidade de São Paulo (USP)Departamento de Engenharia Ambiental Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)dos Santos Machado, Leila [UNESP]Santos, Larissa Gonçalves [UNESP]Doval, Julio Cesar LopezPompêo, Marcelo Luiz MartinsMoschini-Carlos, Viviane [UNESP]2018-12-11T16:44:32Z2018-12-11T16:44:32Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article810-818application/pdfhttp://dx.doi.org/10.4136/ambi-agua.1941Revista Ambiente e Agua, v. 11, n. 4, p. 810-818, 2016.1980-993Xhttp://hdl.handle.net/11449/16911510.4136/ambi-agua.1941S1980-993X20160004008102-s2.0-84994589292S1980-993X2016000400810.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Ambiente e Aguainfo:eu-repo/semantics/openAccess2023-11-27T06:15:07Zoai:repositorio.unesp.br:11449/169115Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:52:07.200861Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil Environmental factors related to the occurrence of potentially toxic cyanobacteria in guarapiranga reservoir, SP, Brazil |
title |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil |
spellingShingle |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil dos Santos Machado, Leila [UNESP] Biomass Eutrophication Nutrients |
title_short |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil |
title_full |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil |
title_fullStr |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil |
title_full_unstemmed |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil |
title_sort |
Fatores ambientais relacionados à ocorrência de cianobactérias potencialmente tóxicas no reservatório de Guarapiranga, SP, Brasil |
author |
dos Santos Machado, Leila [UNESP] |
author_facet |
dos Santos Machado, Leila [UNESP] Santos, Larissa Gonçalves [UNESP] Doval, Julio Cesar Lopez Pompêo, Marcelo Luiz Martins Moschini-Carlos, Viviane [UNESP] |
author_role |
author |
author2 |
Santos, Larissa Gonçalves [UNESP] Doval, Julio Cesar Lopez Pompêo, Marcelo Luiz Martins Moschini-Carlos, Viviane [UNESP] |
author2_role |
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 |
dos Santos Machado, Leila [UNESP] Santos, Larissa Gonçalves [UNESP] Doval, Julio Cesar Lopez Pompêo, Marcelo Luiz Martins Moschini-Carlos, Viviane [UNESP] |
dc.subject.por.fl_str_mv |
Biomass Eutrophication Nutrients |
topic |
Biomass Eutrophication Nutrients |
description |
The objective of this study was to investigate which environmental variables are correlated to the occurrence and dominance of potentially toxic species in Guarapiranga Reservoir, in the metropolitan region of São Paulo/SP - Brazil. Water samples were collected in order to conduct physical, chemical and biologic analyses in the rainy and dry seasons in the reservoir’s upstream and intermediate zones and near its dam. The organisms were microscopically analyzed, identified and quantified, and their dimensions were measured for biomass calculation. The results indicated that the environmental characteristics of each zone of the reservoir are distinct and the biomass, as well as the occurrence of potentially toxic genera of cyanobacteria, vary according to these characteristics. The canonical correspondence analysis showed a correlation between high ammonium levels, low photic zone and neutral-alkaline pH with the biomass of Cylindrospermopsis raciborskii in the rainy season and of Planktolyngbya limnetica in the dry season in the intermediate zone of the reservoir (the Parelheiros zone). The high cyanobacteria biomass and water quality deterioration in the reservoir in the dry season have probably been influenced by the transposition of the Billings reservoir water over an extended period of the year, due to the intense drought of 2014. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 2018-12-11T16:44:32Z 2018-12-11T16:44:32Z |
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/10.4136/ambi-agua.1941 Revista Ambiente e Agua, v. 11, n. 4, p. 810-818, 2016. 1980-993X http://hdl.handle.net/11449/169115 10.4136/ambi-agua.1941 S1980-993X2016000400810 2-s2.0-84994589292 S1980-993X2016000400810.pdf |
url |
http://dx.doi.org/10.4136/ambi-agua.1941 http://hdl.handle.net/11449/169115 |
identifier_str_mv |
Revista Ambiente e Agua, v. 11, n. 4, p. 810-818, 2016. 1980-993X 10.4136/ambi-agua.1941 S1980-993X2016000400810 2-s2.0-84994589292 S1980-993X2016000400810.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Ambiente e Agua |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
810-818 application/pdf |
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) |
repository.mail.fl_str_mv |
|
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1808128992607207424 |