Assessment of marine water quality: Effect of aquaculture and domestic sewade discharge
2013
Terzi, Ertugrul (Recep Tayyip Erdogan University (Turkey). Faculty of Fisheries Rize) | Gedik, Kenan (Recep Tayyip Erdogan University (Turkey). Faculty of Fisheries Rize) | Verep, Bulent (Recep Tayyip Erdogan University (Turkey). Faculty of Fisheries Rize) | Yandi, Ilhan (Recep Tayyip Erdogan University (Turkey). Faculty of Fisheries Rize)
The aim of this study was to determine influence of marine fish farm and sewage on water quality in Rize coast located at southeastern Black Sea. For this purpose, water samples were taken monthly from 5 points around fish cages, 2 points effected sewage areas, a reference point without effects of fish farm and sewage,from June 2007 to April 2009. Measurements were performed according to standard methods. Data was given as min-max for coastal, fish cage and reference points, respectively. Results were for water temperature7.83-27.51, 7.79-27.41, 7.72-27.00 °C; for dissolved oxygen7.60-11.00, 7.00-11.2, 7.80-11.60 mg/L; for pH 8.04-8.43, 7.93-8.38, 7.62-8.33; for salinity16.61- 18.60, 16.77-19.03, 16.78-18.97 ppt; for silicate 0.29-14.64, 0.25-16.43, 0.25-11.70µM; for orthophosphate 0.10-1.71, 0.09-1.50, 0.10-1.95 µM; for total phosphorus 0.24-3.73, 0.12-3.30, 0.10-3.52 µM; for total suspended solids 1.70-26.40, 1.00-20.40, 1.00-11- ,80mg/L; for chlorophyll-a 0.46-3.26, ND-3.25, 0.10-4.99 µg/L, respectively. According to the results, no significant effects of fish farm on water quality were observed in field study. Based on levels of these parameters observed in the study, it was defined that the fish farming was less effect to water quality than domestic sewage discharge.
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