제주도 북동부 연안의 수질 및 퇴적물 분포 특성 = Characteristics of Water Quality and Sediment Distributions on the Northeastern Coast of Jeju Island

다국어 초록 (Multilingual Abstract)

Since the 1980s, the number of land-based fish farms on Jeju Island has increasedrapidly. With increasing land-based fish farms, a large amount of nutrients from fishfarm wastewater is discharged off the coast of Jeju. To understand the characteristicsof coastal seawater and the ecological environment on the coast of Jeju, the effect ofland-based fish farm effluent on coastal seawater should be evaluated. Temperature,salinity, nutrients, and chlorophyll-a concentration were investigated on thenortheastern coast of Jeju during June and July 2023. Nitrate, phosphate, and silicateconcentrations in the surface waters were significantly higher in coastal stationsthan in the outer stations. Unlike the surface waters, nutrient concentrations in thebottom waters are distinctly higher in land-based fish farm effluent stations than inthe outer stations. Total organic carbon content in surface sediment was significantlyhigher in land-based fish farm effluent stations than in the outer stations. This studymay provide valuable information for evaluating the impact of land-based fish farmeffluent on coastal ecosystems on Jeju Island.