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Water quality monitoring and assessment in coastal lagoons: Developing a protocol using a case study in Sainthamaruthu lagoon, Sri Lanka

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dc.contributor.author Begum, S.L.R.
dc.contributor.author Weragoda, S.K.
dc.contributor.author Mowjood, M.I.M.
dc.date.accessioned 2023-11-29T07:39:32Z
dc.date.available 2023-11-29T07:39:32Z
dc.date.issued 2023-10-18
dc.identifier.citation Environmental Quality Management, 00, (00) 1–14 en_US
dc.identifier.issn 1520-6483 (Online)
dc.identifier.issn 1088-1913 (Print)
dc.identifier.uri https://doi.org/10.1002/tqem.22111
dc.identifier.uri http://ir.lib.seu.ac.lk/handle/123456789/6843
dc.description.abstract Sustainable water resources management requires monitoring and assessment of water quality in addition to quantity. Coastal lagoons play a critical role for the peo ple and the ecosystem at large. Water quality monitoring and assessment for lagoons in Sri Lanka is important considering its services to the country. However, due to a lack of resources, most of the lagoons are not monitored and reported properly for further action. This study aims to develop a protocol in terms of monitoring sites, parameters, and frequency for water quality monitoring using a case study in a coastal lagoon, in Sainthamaruthu, Sri Lanka. The physicochemical parameters were measured weekly at eighteen monitoring sites for 4 months during the dry season from June to September 2022. Cluster analysis (CA) along with Inverse Distance Weighted (IDW) interpolation technique revealed that a minimum of three sites out of 18 are sufficient for mon itoring water quality in the lagoon. In light of Principal Component Analysis (PCA) and Discriminant Analysis (DA), it was decided to retain temperature, pH, turbidity, Total Dissolved solids (TDS), Electrical Conductivity (EC), and Dissolved Oxygen (DO) in monitoring programs, since they cumulatively account for 79% of the variation in water quality in the lagoon spatially and temporally. Monitoring turbidity, TDS, and EC at weekly interval, while monitoring temperature, pH, and DO at biweekly or monthly is recommended. A further indication of the lagoon’s water quality is that the mean values for turbidity (27 NTU), EC (754 µS/cm), and DO (4.6 ppm) higher than ambient standards, while TDS (344 ppm) and pH (6.98) are within. Therefore, we conclude that the lagoon requires remediation measures to be suitable for environmental purposes during dry periods. en_US
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.subject coastal lagoon en_US
dc.subject monitoring en_US
dc.subject multivariate statistics en_US
dc.subject water quality en_US
dc.title Water quality monitoring and assessment in coastal lagoons: Developing a protocol using a case study in Sainthamaruthu lagoon, Sri Lanka en_US
dc.type Article en_US
dc.type Preprint en_US


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  • Research Articles [915]
    THESE ARE RESEARCH ARTICLES OF ACADEMIC STAFF, PUBLISHED IN JOURNALS AND PROCEEDINGS ELSWHERE

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