Water quality assessment in Macapá, Amapá fisheries
DOI:
https://doi.org/10.6008/CBPC2179-6858.2020.002.0037Keywords:
Fish Farming, Water, Quality, Environmental ImpactAbstract
Fish farming is an activity of great economic importance, however, the growth of the activity causes environmental impacts, with changes in aquatic ecosystems. The objective of the present study was to evaluate the water quality and the impacts generated by the effluents of fish farming developed in Macapá, Amapá. Two-year water quality analyzes were performed using monthly monitoring of physicochemical and biological variables from January to October 2012. The variables analyzed were dissolved oxygen, pH, electrical conductivity, transparency, turbidity, apparent color, total dissolved solids, chlorides, total hardness, total iron, water temperature, air temperature and chlorophyll. To compare the average of the results of the physicochemical and biological (chlorophyll-a) variables of the living, applied or student test. It also sought to compare the results of the study with the limits determined by CONAMA resolutions. Differences were found between the means of measurement of dissolved oxygen, transparency, total duration, chlorides, water temperature. Chlorophyll values - are above the limit determined by CONAMA. The results show that the nurseries presented a high nutrient load, with increased values of chlorophyll-a, apparent color, turbidity and decreased transparency. The influence of management and seasonality on the behavior of the parameters is verified. A high nutrient load in living beings raises concerns regarding the type of effluent and its effects on surrounding environments.
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