전자저널 > 전자저널 > The Physiochemical Characteristics of Seawater and Sediment of Marine Shellfish Farm in Jindong Bay

The Physiochemical Characteristics of Seawater and Sediment of Marine Shellfish Farm in Jindong Bay

Woo-Geon Jeong and Sang-Man Cho

Division of Marine Bioscience, College of Marine Science, & Institute of Marine Industry, Gyeongsang National University, Tongyeong 650-160, Korea

Seawater and sediment quality analysed was calculated to examinate the present environmental characteristics and pollution load was also calculated to evaluate the effect of farming area on the coastal environment. The measurements for seawater quality demonstrate the coastal environment has relatively eutrophicated with significantly decreased DO (0.2-8.5 mg/l) and elevated COD (9.6-31.2 mg/l) in summer. It was also evident that the water quality in Jindong Bay has been influenced by residues tide from Masan Bay with high metal concentration in August of 2002. Annual total pollution load (land and farm-driven) was estimated at 37,316 ton (SS) /yr: 9,809 ton/yr (26.3%) of land-driven load, 23,576 ton/yr (63.2%) of coastal sedimentation and 3,932 ton/yr (10.5%) of feces of cultural organisms. When all ark shell seedling farms are permitted species conversion to ascidian farm, the pollution load would increase by 196%, which may be another source for accelerating the eutrophication of the environment in Jindong Bay.

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