Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe
ABSTRACT Contamination of water body by diffuse and point sources in springs has caused concerns mainly due to restrictions on its quality. The problem becomes more serious when contamination affects water for human consumption, as occurs in the river São Francisco, which supplies several municipal...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Recursos Hídricos
2018-08-01
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| Series: | Revista Brasileira de Recursos Hídricos |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312018000100230&tlng=en |
| _version_ | 1798019651760816128 |
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| author | Fábio Brandão Britto Anderson Nascimento do Vasco Antenor de Oliveira Aguiar Netto Carlos Alexandre Borges Garcia Gilsia Fabiane Oliveira Moraes Marinoé Gonzaga da Silva |
| author_facet | Fábio Brandão Britto Anderson Nascimento do Vasco Antenor de Oliveira Aguiar Netto Carlos Alexandre Borges Garcia Gilsia Fabiane Oliveira Moraes Marinoé Gonzaga da Silva |
| author_sort | Fábio Brandão Britto |
| collection | DOAJ |
| description | ABSTRACT Contamination of water body by diffuse and point sources in springs has caused concerns mainly due to restrictions on its quality. The problem becomes more serious when contamination affects water for human consumption, as occurs in the river São Francisco, which supplies several municipalities of Sergipe. In this sense, the objective of the study was to evaluate water quality in eleven tributaries of the São Francisco river in its low course in the period from 2013 to 2014, in order to subsidize decision making by public management bodies operating in the region. For this purpose, it was used the Water Quality Index (WQI) and the Trophic State Index (TSI), as well the hierarchical grouping techniques associated to the samples to compare the different causes of contamination of each source. The lowest WQI values were observed in the rivers Betume and Jacaré and they were associated with high concentrations of coliforms related to the disposal of domestic effluents from the riverside cities. It was observed a tendency to eutrophication in the Jacaré stream, Santo Antônio, Pilões, Papagaio and Capivara rivers demonstrated by the high TSI in the rainy season. The results of the cluster analysis were close to their Euclidean distance, and showed that there were similarity relationships between the different water sources related to their parameters of water quality. In this piece of work, we also used the Factor Analysis resulted in the selection of five factors of water quality indicators which are mainly related to mineral content, organic matter, surface runoff and the level of pollution. Thus, it is concluded that the water quality of the São Francisco river tributaries is at a strong tendency towards contamination and that its tributaries need a constant monitoring for the environmental management decisions to be the most adequate for the sustainable survival of the riverside communities. |
| first_indexed | 2024-04-11T16:44:15Z |
| format | Article |
| id | doaj.art-bd5d23cb0bf5454e95f2d6b8466324e3 |
| institution | Directory Open Access Journal |
| issn | 2318-0331 |
| language | English |
| last_indexed | 2024-04-11T16:44:15Z |
| publishDate | 2018-08-01 |
| publisher | Associação Brasileira de Recursos Hídricos |
| record_format | Article |
| series | Revista Brasileira de Recursos Hídricos |
| spelling | doaj.art-bd5d23cb0bf5454e95f2d6b8466324e32022-12-22T04:13:36ZengAssociação Brasileira de Recursos HídricosRevista Brasileira de Recursos Hídricos2318-03312018-08-012310.1590/2318-0331.231820170061Surface water quality assessment of the main tributaries in the lower São Francisco River, SergipeFábio Brandão BrittoAnderson Nascimento do VascoAntenor de Oliveira Aguiar NettoCarlos Alexandre Borges GarciaGilsia Fabiane Oliveira MoraesMarinoé Gonzaga da SilvaABSTRACT Contamination of water body by diffuse and point sources in springs has caused concerns mainly due to restrictions on its quality. The problem becomes more serious when contamination affects water for human consumption, as occurs in the river São Francisco, which supplies several municipalities of Sergipe. In this sense, the objective of the study was to evaluate water quality in eleven tributaries of the São Francisco river in its low course in the period from 2013 to 2014, in order to subsidize decision making by public management bodies operating in the region. For this purpose, it was used the Water Quality Index (WQI) and the Trophic State Index (TSI), as well the hierarchical grouping techniques associated to the samples to compare the different causes of contamination of each source. The lowest WQI values were observed in the rivers Betume and Jacaré and they were associated with high concentrations of coliforms related to the disposal of domestic effluents from the riverside cities. It was observed a tendency to eutrophication in the Jacaré stream, Santo Antônio, Pilões, Papagaio and Capivara rivers demonstrated by the high TSI in the rainy season. The results of the cluster analysis were close to their Euclidean distance, and showed that there were similarity relationships between the different water sources related to their parameters of water quality. In this piece of work, we also used the Factor Analysis resulted in the selection of five factors of water quality indicators which are mainly related to mineral content, organic matter, surface runoff and the level of pollution. Thus, it is concluded that the water quality of the São Francisco river tributaries is at a strong tendency towards contamination and that its tributaries need a constant monitoring for the environmental management decisions to be the most adequate for the sustainable survival of the riverside communities.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312018000100230&tlng=enEnvironmental monitoringEutrophicationFactorial analysis and clustering |
| spellingShingle | Fábio Brandão Britto Anderson Nascimento do Vasco Antenor de Oliveira Aguiar Netto Carlos Alexandre Borges Garcia Gilsia Fabiane Oliveira Moraes Marinoé Gonzaga da Silva Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe Revista Brasileira de Recursos Hídricos Environmental monitoring Eutrophication Factorial analysis and clustering |
| title | Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe |
| title_full | Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe |
| title_fullStr | Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe |
| title_full_unstemmed | Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe |
| title_short | Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe |
| title_sort | surface water quality assessment of the main tributaries in the lower sao francisco river sergipe |
| topic | Environmental monitoring Eutrophication Factorial analysis and clustering |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312018000100230&tlng=en |
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