Macroinvertebrados bentônicos como bioindicadores de qualidade da água do lago de Tefé, Amazonas

Abstract

A community of organisms used in biological monitoring programs are benthic macroinvertebrates. Among the features that make these organisms good indicators of environmental conditions stand up, the great diversity of forms and habitat, offering a broad spectrum of responses to stress. The present study aims to evaluate the presence of benthic macroinvertebrates in Lake Tefé in Amazonas state, in order to analyze the water quality and anthropogenic changes of the lake, and even check how much pollution is studied points, which determined the similarity in the different sections. Quarterly collections were made with different hydrological periods: water, flood and drought, and macroinvertebrates collected were identified to family level, in which more macroinvertebrado that prevailed was the family Chironomidae, which tolerate organic pollution and can live in water low dissolved oxygen levels during the dry season, and this indicates that this period can be said that the Lake Tefé is quite polluted. However, it is necessary to increase the sample size to show more conclusive data on macroinvertebrates of Lake Tefé, but this survey is valuable because it allows for future studies better use of the results presented in this work.