Análisis de sensibilidad de macroinvertebrados a la variación de parámetros físico químicos de calidad del agua en el Río Jatunhuayco – EPMAPS.

Abstract

This research shows a sensitivity study of macroinvertebrates with respect to the variation of physical and chemical water quality parameters around the catchment of the Jatunhuayco River applying the criterion of numerical correlation. Two sampling campaigns were accomplished based on two design factors (Temporality and geomorphology). Some data were analyzed in field, laboratory tests were applied, and macroinvertebrates were identified. The statistical analysis was applied with a systematized database of physical-chemical parameters and macroinvertebrates identification. Previously, methods of estimation of species diversity were employed using nonparametric estimators and non-linear models. In addition, a Principal Component Analysis was used for the synthesis of physical-chemical data. The relationship analysis between water quality variables and macroinvertebrates was performed with correlation in R language. The anova test was applied to determine if the study factors have influence on the response of macroinvertebrate diversity. The results showed correlations which allowed observing parameters with high degree of influence on the development of found macroinvertebrate families. Limnephilidae Anomalocosmoecus illesi is presented as potential bioindicator. Finally, it was determined that geomorphology and temporality have influence on the response of macroinvertebrates in the study place.