한국수산과학회

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kfas, vol. 54, no. 4, pp.508-516, August, 2021
DOI. https://doi.org/10.5657/KFAS.2021.0508

Development of Evaluation Method of Fisheries Sensitivity to Ocean Environments in Korea Waters 해양환경 기반 한국 연근해 어장 민감도 평가 기술 개발

주희태·유만호1 ·윤상철2·김창신·이민욱·김상일·박경우·황재동·오현주·윤석현*
국립수산과학원, 1 ㈜해랑기술정책연구소, 2기초과학연구원

Although scientist have been reporting recently that changes in ocean environment influence the species composition, movements, and growth of fish in Korea waters. Previous studies on fish vulnerability owing to climate changes are insufficient to explain the effect of fluctuating ocean environments on fisheries ground. In this study, we suggested a method for the assessment of fisheries sensitivity to various factors in ocean environments in Korean waters. To evaluate the fisheries sensitivity, catch data (Chub mackerel, Hairtail, Common squid, small yellow croaker) from National federation of fisheries cooperatives in Korea (1991-2017) and oceanographic data from Korea Ocean Data Center (KODC; 1960-2017) were normalized using the z-score method. Thereafter, the fisheries sensitivity was calculated using the difference between the catch data and the oceanographic data. Finally, the fisheries sensitivity was evaluated based on evaluation grade ratings. Result revealed that in the south sea, variability in catch data was obviously higher than environmental fluctuation (evaluation grade 1), indicating that catch variability in response to environmental change is most sensitive in the south sea among Korean waters in 2017. These results would be helpful for fishery management and policy for sustainable yield in Korean waters.

Keyword : Ocean environments, Catch data, Korea waters, Fisheries sensitivity, Evaluation method

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