Turkish Journal of Fisheries and Aquatic Sciences
2017, Vol 17, Num, 2 (Pages: 345-352)
Sediment-Focused Environmental Impact of Rainbow Trout (Oncorhynchus mykiss Walbaum, 1792) Cage Farms: Almus Reservoir (Tokat)
Doğukan Kaya 1 ,Serap Pulatsü 1
1 Ankara University, Faculty of Agriculture, Department of Fisheries and Aquaculture, Ankara, 06100, Turkey
DOI :
10.4194/1303-2712-v17_2_13
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This study aimed to evaluate environmental sediment quality parameters (biological, chemical, sensory) and determine
sediment quality parameters (organic matter, total nitrogen, total phosphorus, total carbon) in rainbow trout cage farms with a
nearly 4,000-ton total production capacity in Almus Reservoir. For this purpose, two cage stations representative of the cage
farm area and two control stations outside of the main current, located at 250 m and 500 m respectively from the cage stations,
were selected. The results suggest that the sediment condition is `unacceptable` with regard to biological parameter. The
environmental condition of the cage station sediment compared to the control stations with regard to chemical and sensory
parameters were determined to be `transition area` and `partially acceptable`, respectively. The organic matter and total
nitrogen of the cage station sediment were found to be 1.23 and 1.70 times greater than that of the control stations,
respectively. When compared to the control stations, the total phosphorus and total carbon concentrations in the cage
sediments showed 1.40-fold increasess in April and October 2015. It is thought that the methods and results of this study will
contribute to sediment-focused research related to the sustainability of cage farming in inland waters.
Keywords :
Sediment, rainbow trout, reservoirs, cage culture, environmental impact