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Article

Influence of Land Use/Land Cover on Surface-Water Quality of Santa Lucía River, Uruguay

Department of Fluid Mechanics and Environmental Engineering (IMFIA), School of Engineering (FIng), Universidad de la República (UdelaR), Julio Herrera y Reissig 565, Montevideo 11300, Uruguay
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Sustainability 2020, 12(11), 4692; https://doi.org/10.3390/su12114692
Received: 15 May 2020 / Revised: 2 June 2020 / Accepted: 4 June 2020 / Published: 9 June 2020
Land use/land cover is one of the critical factors that affects surface-water quality at catchment scale. Effective mitigation strategies require an in-depth understanding of the leading causes of water pollution to improve community well-being and ecosystem health. The main aim of this study is to assess the relationship between land use/land cover and biophysical and chemical water-quality parameters in the Santa Lucía catchment (Uruguay, South America). The Santa Lucía river is the primary potable source of the country and, in the last few years, has had eutrophication issues. Several multivariate statistical analyses were adopted to accomplish the specific objectives of this study. The principal component analysis (PCA), coupled with k-means cluster analysis (CA), helped to identify a seasonal variation (fall/winter and spring/summer) of the water quality. The hierarchical cluster analysis (HCA) allowed one to classify the water-quality monitoring stations in three groups in the fall/winter season. The factor analysis (FA) with a rotation of the axis (varimax) was adopted to identify the most significant water-quality variables of the system (turbidity and flow). Finally, another PCA was run to link water-quality variables to the dominant land uses of the watershed. Strong correlations between TP and agriculture-land use, TP and livestock farming, NT and urban areas arose. It was found that these multivariate exploratory tools can provide a proper overview of the water-quality behavior in space and time and the correlations between water-quality variables and land use. View Full-Text
Keywords: land use/land cover; water quality; nutrients; multicriteria statistical analysis; Santa Lucía watershed land use/land cover; water quality; nutrients; multicriteria statistical analysis; Santa Lucía watershed
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MDPI and ACS Style

Gorgoglione, A.; Gregorio, J.; Ríos, A.; Alonso, J.; Chreties, C.; Fossati, M. Influence of Land Use/Land Cover on Surface-Water Quality of Santa Lucía River, Uruguay. Sustainability 2020, 12, 4692. https://doi.org/10.3390/su12114692

AMA Style

Gorgoglione A, Gregorio J, Ríos A, Alonso J, Chreties C, Fossati M. Influence of Land Use/Land Cover on Surface-Water Quality of Santa Lucía River, Uruguay. Sustainability. 2020; 12(11):4692. https://doi.org/10.3390/su12114692

Chicago/Turabian Style

Gorgoglione, Angela, Javier Gregorio, Agustín Ríos, Jimena Alonso, Christian Chreties, and Mónica Fossati. 2020. "Influence of Land Use/Land Cover on Surface-Water Quality of Santa Lucía River, Uruguay" Sustainability 12, no. 11: 4692. https://doi.org/10.3390/su12114692

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