Avaliação ambiental do Córrego Brejo Alegre, em Araguari (MG), utilizando Allium Cepa e Astyanax Altiparanae como sistemas-teste

Abstract

Aquatic ecosystems receive most of the contaminants from industrial, urban, and agricultural sources. In some regions, the environment has been disturbed in such a way that the degradation of these contaminants and restoration of natural balance are not possible. Biomonitoring is a tool for assessing environmental quality within a defined spatial and temporal scale, in the physical-chemical monitoring the quality and quantity of factors are approached, and biological effects can be inferred, while in bio-reporting information on the effects on the biological system can be inferred, and it may be inferred on the quality and quantity of the stressor factor. The work verified the influence of anthropic effects on the quality of the waters of Brejo Alegre Stream. The micronucleus test was carried out in both species, root development test, along with physical-chemical analysis. The association of all the results shows that there are genotoxic pollutants at both points of analysis. Therefore, the obtained results indicate as a basis to verify the interference of the environmental degradation of the Brejo Alegre Stream on the biological aspects of the living organisms that inhabit it.