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Turkish Journal of Fisheries and Aquatic Sciences 2008, Vol 8, Num, 2     (Pages: 293-300)

The Effects of a Fish Farming Scenario Using QUAL2E Modelling at Fırtına Creek (Black Sea Region)

N. Sivri 1 ,A. Erturk 2 ,E. Kose 3

1 Istanbul University, Faculty of Engineering, Department of Environmental Engineering, 34320, Avcılar, Istanbul, Turkey
2 Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, 34469, Maslak, Istanbul, Turkey
3 Karadeniz Technical University, Faculty of Marine Science, 61530, Sürmene, Trabzon, Turkey
Viewed : 1868 - Downloaded : 1534 In this study, a water quality model of Fırtına Creek was used as an evaluative tool to estimate the spatial distribution of several water quality related variables together with the nutrient loads that are transported to the Eastern Black Sea. Fırtına Creek is an important habitat within the Eastern Black Sea ecosystem due to the fact that it is the primary spawning area for Black Sea Trout (Salmo trutta labrax, Pallas 1811). It can also be considered as an important water resource because of its relatively high flow rate and the water quality, which indicates that the stream is still not seriously polluted. Studies performed in this river indicate that external activities along the Fırtına Creeks watershed (such as road construction and pollution from a hydroelectric dam construction) have led to various changes within the ecosystem. In this study, the possible effects of three additional fish farms with a production capacity of 50 tons, located on the Fırtına Creek within 1 km distance from each other were evaluated in terms of their effects on the streams water quality. QUAL2E was used as the water quality modelling and analysis tool. The water quality data gathered from various data sources and the model were used to estimate dissolved oxygen (DO), biological oxygen demand (BOD5) and nutrients along the stream. Keywords : Mathematical modelling, nutrient loads, QUAL2E, Fırtına Creek, Eastern Black Sea