Multivariate statistical techniques were applied to evaluate the temporal and spatial variation of water quality in the Cuiabá River basin that could be affected by urban effluent discharge and diffuse pollution. After data treatment, 75.74% of the total variance was explained in the 28 parameters determined in water samples, collected at 13 stations from July 2010 to May 2011. The first component (29.08%) was represented by dissolved ions from natural processes and samples collected during rainy season, and the second component (15.42%) was related mainly to agricultural and urban effluent discharges and with samples collected during dry season (positive loadings). Hierarchical cluster analysis revealed the existence of five groups, of which three were characterized as regions of low, moderate, and high impact in the basin respectively. The other two sites, Marzagão and Porto Cercado, were considered unique groups. Marzagão is located in the headwaters of the Cuiabá River and is not subject to flow regulation caused by a reservoir, and Porto Cercado is within the flood plain of Pantanal. These data will contribute to the optimization of monitoring programs and to the understanding of other similar watersheds.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.