Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas
Autor(a) principal: | |
---|---|
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/s10661-017-6387-3 http://hdl.handle.net/11449/175654 |
Resumo: | Reservoirs in urban areas are used for different purposes and are liable to different types of pressures that can cause the loss of chemical and biological quality, hence diminishing their ecological, economic, and cultural benefits. Here, a study of surface water heterogeneity was undertaken at the Guarapiranga urban reservoir (São Paulo, Brazil) in order to improve understanding of the structure and functioning of these ecosystems. Sampling was performed during the dry and rainy seasons at 33 sites. Limnological variables and total contents of the metals cadmium, nickel, lead, and zinc were analyzed. The risks associated with the metals were evaluated based on the toxicity unit approach. A principal component analysis enabled differentiation of the reservoir into six different areas. Some of the most powerful discriminatory variables (nutrients and metals) showed the existence of anthropogenic impacts on the system. The most strongly affected compartments were located in the following: (1) upstream area, under the influence of the Parelheiros stream, with the highest total phosphorus levels (318 mg L−1) and (2) dam area, with high values for total nitrogen, suspended organic matter, total solids, and pH. The results for the dam compartment were a consequence of substantial urbanization and a longer residence time. Despite high levels of cadmium during the rainy season, no significant potential risk for zooplankton was observed. The data indicated the need to control unauthorized land occupation and to implement adequate sanitation in the Guarapiranga watershed. This research provides information that should assist water resource agencies in the sustainable management of urban reservoirs. |
id |
UNSP_0ebb8cce1f7829d10ca11d51bea532ef |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/175654 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areasCadmium contaminationSpatial heterogeneityUrban impactWater qualityReservoirs in urban areas are used for different purposes and are liable to different types of pressures that can cause the loss of chemical and biological quality, hence diminishing their ecological, economic, and cultural benefits. Here, a study of surface water heterogeneity was undertaken at the Guarapiranga urban reservoir (São Paulo, Brazil) in order to improve understanding of the structure and functioning of these ecosystems. Sampling was performed during the dry and rainy seasons at 33 sites. Limnological variables and total contents of the metals cadmium, nickel, lead, and zinc were analyzed. The risks associated with the metals were evaluated based on the toxicity unit approach. A principal component analysis enabled differentiation of the reservoir into six different areas. Some of the most powerful discriminatory variables (nutrients and metals) showed the existence of anthropogenic impacts on the system. The most strongly affected compartments were located in the following: (1) upstream area, under the influence of the Parelheiros stream, with the highest total phosphorus levels (318 mg L−1) and (2) dam area, with high values for total nitrogen, suspended organic matter, total solids, and pH. The results for the dam compartment were a consequence of substantial urbanization and a longer residence time. Despite high levels of cadmium during the rainy season, no significant potential risk for zooplankton was observed. The data indicated the need to control unauthorized land occupation and to implement adequate sanitation in the Guarapiranga watershed. This research provides information that should assist water resource agencies in the sustainable management of urban reservoirs.Environmental Sciences Program UNESP Sorocaba Campus, Av. Três de Março, 511 - AparecidinhaCatan Institute for Water Research (ICRA)Ecology Department Institute of Biosciences University of São PauloEnvironmental Sciences Program UNESP Sorocaba Campus, Av. Três de Março, 511 - AparecidinhaUniversidade Estadual Paulista (Unesp)Catan Institute for Water Research (ICRA)Universidade de São Paulo (USP)Cardoso-Silva, Sheila [UNESP]López-Doval, Julio CesarMoschini-Carlos, Viviane [UNESP]Pompêo, Marcelo2018-12-11T17:16:55Z2018-12-11T17:16:55Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1007/s10661-017-6387-3Environmental Monitoring and Assessment, v. 190, n. 1, 2018.1573-29590167-6369http://hdl.handle.net/11449/17565410.1007/s10661-017-6387-32-s2.0-850384254842-s2.0-85038425484.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEnvironmental Monitoring and Assessment0,5890,589info:eu-repo/semantics/openAccess2023-10-05T06:02:25Zoai:repositorio.unesp.br:11449/175654Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:02:47.701913Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas |
title |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas |
spellingShingle |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas Cardoso-Silva, Sheila [UNESP] Cadmium contamination Spatial heterogeneity Urban impact Water quality |
title_short |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas |
title_full |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas |
title_fullStr |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas |
title_full_unstemmed |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas |
title_sort |
Metals and limnological variables in an urban reservoir: compartmentalization and identification of potential impacted areas |
author |
Cardoso-Silva, Sheila [UNESP] |
author_facet |
Cardoso-Silva, Sheila [UNESP] López-Doval, Julio Cesar Moschini-Carlos, Viviane [UNESP] Pompêo, Marcelo |
author_role |
author |
author2 |
López-Doval, Julio Cesar Moschini-Carlos, Viviane [UNESP] Pompêo, Marcelo |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Catan Institute for Water Research (ICRA) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Cardoso-Silva, Sheila [UNESP] López-Doval, Julio Cesar Moschini-Carlos, Viviane [UNESP] Pompêo, Marcelo |
dc.subject.por.fl_str_mv |
Cadmium contamination Spatial heterogeneity Urban impact Water quality |
topic |
Cadmium contamination Spatial heterogeneity Urban impact Water quality |
description |
Reservoirs in urban areas are used for different purposes and are liable to different types of pressures that can cause the loss of chemical and biological quality, hence diminishing their ecological, economic, and cultural benefits. Here, a study of surface water heterogeneity was undertaken at the Guarapiranga urban reservoir (São Paulo, Brazil) in order to improve understanding of the structure and functioning of these ecosystems. Sampling was performed during the dry and rainy seasons at 33 sites. Limnological variables and total contents of the metals cadmium, nickel, lead, and zinc were analyzed. The risks associated with the metals were evaluated based on the toxicity unit approach. A principal component analysis enabled differentiation of the reservoir into six different areas. Some of the most powerful discriminatory variables (nutrients and metals) showed the existence of anthropogenic impacts on the system. The most strongly affected compartments were located in the following: (1) upstream area, under the influence of the Parelheiros stream, with the highest total phosphorus levels (318 mg L−1) and (2) dam area, with high values for total nitrogen, suspended organic matter, total solids, and pH. The results for the dam compartment were a consequence of substantial urbanization and a longer residence time. Despite high levels of cadmium during the rainy season, no significant potential risk for zooplankton was observed. The data indicated the need to control unauthorized land occupation and to implement adequate sanitation in the Guarapiranga watershed. This research provides information that should assist water resource agencies in the sustainable management of urban reservoirs. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:16:55Z 2018-12-11T17:16:55Z 2018-01-01 |
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/s10661-017-6387-3 Environmental Monitoring and Assessment, v. 190, n. 1, 2018. 1573-2959 0167-6369 http://hdl.handle.net/11449/175654 10.1007/s10661-017-6387-3 2-s2.0-85038425484 2-s2.0-85038425484.pdf |
url |
http://dx.doi.org/10.1007/s10661-017-6387-3 http://hdl.handle.net/11449/175654 |
identifier_str_mv |
Environmental Monitoring and Assessment, v. 190, n. 1, 2018. 1573-2959 0167-6369 10.1007/s10661-017-6387-3 2-s2.0-85038425484 2-s2.0-85038425484.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Environmental Monitoring and Assessment 0,589 0,589 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
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 |
|
_version_ |
1808128308205846528 |