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http://dx.doi.org/10.5657/kfas.2002.35.4.408

Estimating the Carrying Capacity of a Coastal Bay for Oyster Culture -II. The Carrying Capacity of Geoie-Hansan Bay-  

Park Jong Soo (Marine Environment Management Division, National Fisheries Research ft Development Institute)
Kim Hyung Chul (Marine Environment Management Division, National Fisheries Research ft Development Institute)
Choi Woo Jeung (Marine Environment Management Division, National Fisheries Research ft Development Institute)
Lee Won Chan (Marine Environment Management Division, National Fisheries Research ft Development Institute)
Kim Dong Myung (Department of Environmental Engineering, Pukyong National University)
Koo Jun Ho (Marine Environment Management Division, National Fisheries Research ft Development Institute)
Park Chung Kil (Department of Environmental Engineering, Pukyong National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.35, no.4, 2002 , pp. 408-416 More about this Journal
Abstract
A 3D hydrodynamic-ecological coupled model was applied to estimate carrying capacity in Geoje-Hansan Bay where is one of the most important oyster culturing grounds in Korea. We considered the carrying capacity as the difference between food supply to the oysters and food demand, considering monthly difference of the actual growth. The food supply to the system was determined from the results of the model simulation (tidal exchange and chlorophyll $\alpha$) over the culturing period from September to May of the following year. The food demand was estimated from the food concentration (chlorophyll $\alpha$) multiple the filtration rate of oysters that is considered monthly different growth rate of oysters and food concentration. The values of carrying capacity for the system varied from 6.1 ton/ha (minimum carrying capacity) in february to 14.91 ton/ha (maximum carrying capacity) in April of marketable size oysters (>4 g wet-tissue weight) depending on temporal variations in the food supply. The oyster production calculated from present facilities was 9 ton/ha in wet-tissue weight in Geoje-Hansan Bay. This value corresponded to $60\%$ of maximum carrying capacity of the system. The optimal carrying capacity without negatively affecting on oyster production was 5.5 ton/ha when calculated from annual statistic data and 6.1 ton/ha when determined by this study. These results suggest that it must be reduced $32\%$~$39\%$ of oyster facilities in the system.
Keywords
Ecosystem model; Carrying capacity; Food supply; Food demand; Oysters; Geoje-Hansan Bay;
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