생태지수를 이용한 굴 양식장의 지속가능성 평가 모델링

Abstract

Since shellfish culture does not require the addition of artificial food supplement, the growth and productivity of shellfish depend on the supply ability of food, and the filtration ability of shellfish. The supply ability of food is determined by the exchange rate of seawater and the growth rate of phytoplankton. So it determines the amount of shellfish that can be accommodated by the shellfish culture area. In this study, we studied the sustainability of the oyster farm using ecological indices clearance efficiency and food limitation. Clearance efficiency results show that the inner area of Jaran Bay has the lowest environmental sustainability. Food limitation results show that oyster farms are currently unsustainable in four of eight sectors. Based on the results of ecological indices calculations, we simulated the growth and production of the oyster by reducing stocking density and moving to the offshore farm. As a result, we found that the yield was higher in the case of the farm was moved. These results suggest that it is more effective to apply a different reduction rate for different areas rather than using the same reduction rate to the whole area for oyster aquaculture sustainability. It also indicates that moving the farm is more efficient in terms of yield than reducing stocking density.