Water characterization of Igarapés used in fish farming in Manaus and Iranduba, Amazonas, Brazil

The objective was to study the impacts of implementation fish farming projects (fish breeding), quality water effluents from these enterprises, in upland streams on properties municipalities Manaus and Iranduba. We chose monitor some physical-chemical attributes such as turbidity, dissolved oxygen, chlorophyll-a, ammonia, nitrite, nitrate phosphorus because they are able establish a relationship between loss environmental water. For this study, 16 sample units were analyzed, with two collection points each, upstream downstream enterprises uplands continuous land (continuous flow), different periods year 2016 2017. main variables studied analysis stage an aquatic ecosystem, including fishing grounds, can be: temperature, pH, concentration nutrients (nitrite, total phosphorus), chlorophyll. There no significant difference ammonia nitrate. for depth, turbidity nitrite parameters. pH observed chlorophyll-a. analyzed parameters sufficient demonstrate that activity Igarapé alters pH. Based parameters, better control is suggested flow feed offered fish.