ارزیابی اثرات محیطی پرورش ماهی قزلآالی رنگینکمان قفسهای در Oncorhynchus mykiss (Walbaum, 1792) جنوب دریای خزر )مطالعه موردی؛ قفسهای پرورش ماهی کالرآباد.

The reduction of water resources in Iran and the increasing need for food and protein have increased the importance of fish farming in cages. However, cage culture, like other development projects, requires environmental assessments. The aim of this study was to evaluate the environmental effects of growing rainbow trout Oncorhynchus mykiss culture in cages. In this research, in order to evaluate the effects of fish farming in cages, Iranian Matrix methods, Dynamic Energy Budget theory, and estimation of phosphorus and nitrogen levels caused by cages were used. Data analysis was performed using information related to the storage of rainbow trout in floating cages located in the southern part of the Caspian Sea. The results showed that according to estimating the amount of nitrogen and phosphorus output of the studied cages and their concentration at a depth of 25 meters sea level, the maximum fish farming capacity in the cage is about 100 tons of produced biomass. Evaluation of the average effects using the Iranian Leopold method also showed that cultivation of 100 tons of rainbow trout in sea cages has insignificant and weak destructive effects. [ABSTRACT FROM AUTHOR]