Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil

Nutrient enrichment and eutrophication are among the main problems that lead to the deterioration of water quality in lakes and reservoirs. In this study, spatial and temporal variations in the concentrations of organic and inorganic species of nitrogen and phosphorus in the water column of Lake Par...

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Autores principales:	Damiana B. da Silva, Valéria R. Bellotto, Jackeline do S. B. Barbosa, Thiago B. Lima
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	tropical reservoir nitrogen phosphorus seasonal variation trophic state Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/9decb1322c7049a78822124738bf2575
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spelling	oai:doaj.org-article:9decb1322c7049a78822124738bf25752021-11-25T19:16:47ZSpatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil10.3390/w132233142073-4441https://doaj.org/article/9decb1322c7049a78822124738bf25752021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/22/3314https://doaj.org/toc/2073-4441Nutrient enrichment and eutrophication are among the main problems that lead to the deterioration of water quality in lakes and reservoirs. In this study, spatial and temporal variations in the concentrations of organic and inorganic species of nitrogen and phosphorus in the water column of Lake Paranoá-DF (Brazil) were evaluated between 2016 and 2017. Seasonality was the main factor in the variations in concentrations of the investigated parameters. Additionally, we found differences in behavior for different nutrients and other variables that indicate different main sources of each nutrient as well as different biogeochemical processes predominating in each season. For example, the electrical conductivity (EC), dissolved silicon, PO<sub>4</sub><sup>3<b>−</b></sup>, and NO<sub>3</sub><b><sup>−</sup></b> showed mean concentrations significantly higher in the rainy season, indicating greater inputs in these periods (which is in part related to increasing soil leaching and runoff). Agricultural activities were the main source of NO<sub>3</sub><b><sup>−</sup></b> and wastewater treatment plants (WWTP) proved to be the main source of nutrients, mainly NH<sub>4</sub><sup>+</sup> and all forms of phosphorus. These two allochthonous sources are also the determining factors of the trophic state and the degradation of the water quality of Lake Paranoá. The lake is in the transition process from a mesotrophic to a eutrophic condition.Damiana B. da SilvaValéria R. BellottoJackeline do S. B. BarbosaThiago B. LimaMDPI AGarticletropical reservoirnitrogenphosphorusseasonal variationtrophic stateHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3314, p 3314 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tropical reservoir nitrogen phosphorus seasonal variation trophic state Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	tropical reservoir nitrogen phosphorus seasonal variation trophic state Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Damiana B. da Silva Valéria R. Bellotto Jackeline do S. B. Barbosa Thiago B. Lima Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil
description	Nutrient enrichment and eutrophication are among the main problems that lead to the deterioration of water quality in lakes and reservoirs. In this study, spatial and temporal variations in the concentrations of organic and inorganic species of nitrogen and phosphorus in the water column of Lake Paranoá-DF (Brazil) were evaluated between 2016 and 2017. Seasonality was the main factor in the variations in concentrations of the investigated parameters. Additionally, we found differences in behavior for different nutrients and other variables that indicate different main sources of each nutrient as well as different biogeochemical processes predominating in each season. For example, the electrical conductivity (EC), dissolved silicon, PO<sub>4</sub><sup>3<b>−</b></sup>, and NO<sub>3</sub><b><sup>−</sup></b> showed mean concentrations significantly higher in the rainy season, indicating greater inputs in these periods (which is in part related to increasing soil leaching and runoff). Agricultural activities were the main source of NO<sub>3</sub><b><sup>−</sup></b> and wastewater treatment plants (WWTP) proved to be the main source of nutrients, mainly NH<sub>4</sub><sup>+</sup> and all forms of phosphorus. These two allochthonous sources are also the determining factors of the trophic state and the degradation of the water quality of Lake Paranoá. The lake is in the transition process from a mesotrophic to a eutrophic condition.
format	article
author	Damiana B. da Silva Valéria R. Bellotto Jackeline do S. B. Barbosa Thiago B. Lima
author_facet	Damiana B. da Silva Valéria R. Bellotto Jackeline do S. B. Barbosa Thiago B. Lima
author_sort	Damiana B. da Silva
title	Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil
title_short	Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil
title_full	Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil
title_fullStr	Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil
title_full_unstemmed	Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil
title_sort	spatiotemporal variation on water quality and trophic state of a tropical urban reservoir: a case study of the lake paranoá-df, brazil
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9decb1322c7049a78822124738bf2575
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Spatiotemporal Variation on Water Quality and Trophic State of a Tropical Urban Reservoir: A Case Study of the Lake Paranoá-DF, Brazil

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