Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil

Water quality monitoring is an essential strategy for water resources management. Physicochemical and microbiological parameters play an important role in the characterization of water quality. They are helpful tools for the identification of pollution in aquatic ecosystems, being natural sources or...

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Autores principales:	Rodrigo Felipe Bedim Godoy, Enzo Luigi Crisiogiovanni, Elias Trevisan, Fernando Aparecido Dias Radomski
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	aquatic ecosystem linear regression model organic pollution temporal analysis total phosphorus Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/6731658827db411e9cc066c96be61f2b
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spelling	oai:doaj.org-article:6731658827db411e9cc066c96be61f2b2021-11-06T07:15:33ZSpatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil1606-97491607-079810.2166/ws.2021.026https://doaj.org/article/6731658827db411e9cc066c96be61f2b2021-06-01T00:00:00Zhttp://ws.iwaponline.com/content/21/4/1718https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Water quality monitoring is an essential strategy for water resources management. Physicochemical and microbiological parameters play an important role in the characterization of water quality. They are helpful tools for the identification of pollution in aquatic ecosystems, being natural sources or because of anthropogenic actions, and contribute to making decisions as well as sustainable development in a hydrographic basin. This study analyzed the water quality variation over a period of 20 years in Piquiri River watershed. Total phosphorus (TP) concentration from affluent rivers was estimated using a linear regression model. The relationship between total nitrogen and TP presented a Person's linear correlation of 0.80, while turbidity and total suspended solids presented a correlation of 0.79. The relationship between the predicted and observed values for turbidity and TP presented r² higher than 0.60. Spatial–temporal variation of water quality in Piquiri River watershed has shown good quality over the years, although unacceptable values for Escherichia coli, biochemical oxygen demand, chemical oxygen demand and total phosphorus levels appeared. Most unacceptable values were identified in affluent rivers, suggesting the improvement in the water quality closer to downstream of the Piquiri River. Water quality index also showed good quality water for all stations. HIGHLIGHTS Piquiri River watershed presented frequently to have water quality of Class 1.; Unacceptable levels of E. coli, BOD, TP were seen mainly on affluent.; Water quality index presented values between 58 and 78.; Strong Pearson's correlations between TP and TN, and, between turbidity and TSS.; IDW interpolation shows higher values for TN in agricultural areas.;Rodrigo Felipe Bedim GodoyEnzo Luigi CrisiogiovanniElias TrevisanFernando Aparecido Dias RadomskiIWA Publishingarticleaquatic ecosystemlinear regression modelorganic pollutiontemporal analysistotal phosphorusWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 4, Pp 1718-1734 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	aquatic ecosystem linear regression model organic pollution temporal analysis total phosphorus Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	aquatic ecosystem linear regression model organic pollution temporal analysis total phosphorus Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Rodrigo Felipe Bedim Godoy Enzo Luigi Crisiogiovanni Elias Trevisan Fernando Aparecido Dias Radomski Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil
description	Water quality monitoring is an essential strategy for water resources management. Physicochemical and microbiological parameters play an important role in the characterization of water quality. They are helpful tools for the identification of pollution in aquatic ecosystems, being natural sources or because of anthropogenic actions, and contribute to making decisions as well as sustainable development in a hydrographic basin. This study analyzed the water quality variation over a period of 20 years in Piquiri River watershed. Total phosphorus (TP) concentration from affluent rivers was estimated using a linear regression model. The relationship between total nitrogen and TP presented a Person's linear correlation of 0.80, while turbidity and total suspended solids presented a correlation of 0.79. The relationship between the predicted and observed values for turbidity and TP presented r² higher than 0.60. Spatial–temporal variation of water quality in Piquiri River watershed has shown good quality over the years, although unacceptable values for Escherichia coli, biochemical oxygen demand, chemical oxygen demand and total phosphorus levels appeared. Most unacceptable values were identified in affluent rivers, suggesting the improvement in the water quality closer to downstream of the Piquiri River. Water quality index also showed good quality water for all stations. HIGHLIGHTS Piquiri River watershed presented frequently to have water quality of Class 1.; Unacceptable levels of E. coli, BOD, TP were seen mainly on affluent.; Water quality index presented values between 58 and 78.; Strong Pearson's correlations between TP and TN, and, between turbidity and TSS.; IDW interpolation shows higher values for TN in agricultural areas.;
format	article
author	Rodrigo Felipe Bedim Godoy Enzo Luigi Crisiogiovanni Elias Trevisan Fernando Aparecido Dias Radomski
author_facet	Rodrigo Felipe Bedim Godoy Enzo Luigi Crisiogiovanni Elias Trevisan Fernando Aparecido Dias Radomski
author_sort	Rodrigo Felipe Bedim Godoy
title	Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil
title_short	Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil
title_full	Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil
title_fullStr	Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil
title_full_unstemmed	Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil
title_sort	spatial and temporal variation of water quality in a watershed in center-west paraná, brazil
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/6731658827db411e9cc066c96be61f2b
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Spatial and temporal variation of water quality in a watershed in center-west Paraná, Brazil

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