Influence of the surface water quality of the Caño Correa on the coral reefs of the Corales del Rosario and San Bernardo National Natural Park (Colombian Caribbean)

Abstract

Abstract-The quality of the surface water of Caño Correa and its influence on the coral reefs of the Corales del Rosario and San Bernardo National Natural Park located in the waters of the Colombian Caribbean were analyzed. Multivariate analysis of the water quality data-set was performed through PCA. The statistical analysis showed that the nutrients are at levels close to eutrophication, the solids exceed the levels established by the regulations and the salinity presents abrupt changes in their levels, all these factors affect the health of the marine ecosystems. The principal component analysis identified four components that explain 67.27% of the total variance of the data. The first factor represents the agroindustrial contribution, the second factor represents pollution by minerals and organic matter, the third factor is due to wastewater-fertilization and the fourth factor is clearly microbiological.

Multivariable statistical evaluation of water quality in Juan polo coastal lagoon (Colombian Caribbean)

“…Descriptive statistics tools, such as mean, standard deviation, etc. and Inferential statistics techniques like Hypothesis testing and confidence intervals, were used to evaluate if the variability of data is according to the law [9]. To compare dry and rainy season behavior Mann-Whitney-Wilcoxom test was performed, this is a non-parametric test used as an alternative to the t-test when the population cannot be assumed to be normally distributed.…”

Determination of the optimal dose of aluminum polycoloride in a plant of treatment of drinking water of the colombian

“…El agua puede contener una variedad de impurezas, solubles e insolubles; entre estas últimas destacan las partículas coloidales, las sustancias húmicas y los microorganismos en general. Estas partículas presentes en el agua son las principales responsables de la turbiedad (Baldiris et al, 2017). Para desestabilizar las partículas coloidales se lleva a cabo el proceso de coagulación-floculación que consiste en la aglomeración de las partículas coloidales presentes en el agua formando pequeños gránulos con un peso específico superior al del agua llamados floc.…”