Evaluación de la calidad del agua del río Miriumi, tramo sector barrio La Cruz comunidad La Merced, mediante macroinvertebrados bentónicos como bioindicadores.

Abstract

The main objective of the current study was to evaluate the water quality of the Miriumi River using the Biological Monitoring Working Party index for Colombia and the water quality index (ICA-NSF), in the section located in “Barrio La Cruz-Comunidad La Merced” in the city of Sucúa. First, it conducted a tour of the study section to establish the monitoring stations, named as: PM-01, PM-02 and PM-03. The monitoring carried out from April to June, where samples were collected to perform physicochemical and microbiological analysis that served for the evaluation of the quality index ICA-NSF, these results were managed to obtain through the IQAData software that are in a range, comprising values of 69.69; 61.21 and 65.34; in stations PM-01, PM-02 and PM-03 respectively, indicating that the water quality is REGULAR. The results obtained indicate that the fecal coliform and turbidity parameters exceed the established permissible limits. On the other hand, it collected a total of 214 individuals belonging to 11 orders and 23 families through monitoring of macroinvertebrates evaluating the water quality with a value of 49 which categorizes it as DOUBTFUL demonstrating that there is the presence of tolerant and non-tolerant individuals. Finally, a comparison between the indexes used in the evaluation was made, concluding that the contamination of the Miriumi River is as a consequence of anthropic activities that affect the development of macroinvertebrates identifying individuals belonging to the Leptohyphidae with a tolerance value of 7; being the most abundant family registered in the research, while individuals of the Perlidae family were found with a tolerance value of 10 according to contamination existing in the body of water.