HYDROBIOLOGICAL STANDARDS AS ENVIRONMENTAL INDICATORS IN AFFLUENTS AND EFFLUENTS OF MARINE SHRIMP PONDS IN CEARÁ STATE

Abstract

One of the ways to verify environmental impacts of shrimp farming is through the systemic analysis of influent and effluents waters ponds. The aim of this work was to characterize these variables through its physical, chemical and biological parameters and their concentrations, adopting a temporal scheme of samples collection in different climate stations of the year. Methodologies and reference standards in research are supported by current environmental legislation. Results showed that there were no significant differences between the concentrations of these parameters between the influent and effluent waters. They, furthermore, indicate a inapplicability of current environmental legislation in Brazil, which does not consider our regional environmental characteristics, because the quality of the affluent waters were already in disagreement with the Brazilian environmental legislation, which has caused conflicts of interpretation in the environmental assessment of the shrimp culture in Ceará, Brazil.