Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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A bioeconomic analysis on evaluation of management policies for Blackfin flounder Glyptocephalus stelleri - In the case of eastern sea danish fisheries -

기름가자미 어업관리방안 평가를 위한 생물경제학적 분석 - 동해구외끌이중형저인망어업을 대상으로 -

  • CHOI, Ji-Hoon (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • KANG, Hee Joong (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • LIM, Jung Hyun (Distant Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • KIM, Do-Hoon (Department of Marine & Fisheries Business and Economics, Pukyong National University)
  • 최지훈 (국립수산과학원 연근해자원과) ;
  • 강희중 (국립수산과학원 연근해자원과) ;
  • 임정현 (국립수산과학원 원양자원과) ;
  • 김도훈 (부경대학교 해양수산경영학과)
  • Received : 2020.08.06
  • Accepted : 2020.10.15
  • Published : 2020.11.30
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Abstract

In this study, the Bayesian state-space model was used for the stock assessment of the Blackfin flounder. In addition, effective measures for the resource management were presentedwith the analysis on the effectiveness of fisheries management plans. According to the result of the analysis using the Bayesian state-space model, the main biometric value of Blackfin flounder was analyzed as 1,985 tons for maximum sustainable yield (MSY), 23,930 tons for carrying capacity (K), 0.000007765 for catchability coefficient (q) and 0.31 for intrinsic growth (r). Also the evaluation on the biological effect of TAC was done. The result showed that the Blackfin flounder biomass will be kept at 14,637 tons 20 years later given the present TAC volume of 1,761 tons. If the Blackfin flounder TAC volume is set to 1,600 tons, the amount of biomass will increase to 16,252 tons in the future. Lastly, the biological effectiveness of the policy to reduce fishing effort was assessed. The result showed that the Blackfin flounder biomass will be maintained at 13,776 tons if the current fishing efforts (currently hp) level is set and maintained. If the fishing effort is reduced by 20%, it will increase to 17,091 tons in the future. The analysis on the economic effect of TAC showed that NPV will be the lowest at 1,486,410 won in 2038, 20 years after the establishment of 2,500 tons of TAC volume. If the TAC volume is set at 2,000 tons, NPV was estimated to be the highest at 2,206,522,000 won. In addition, the analysis on the economic effect of the policy to reduce the amount of fishing effort found that NPV will be 2,235,592,000 won in 2038, 20 years after maintaining the current level of fishing effort. If the fishing effort is increased by 10%, NPV will be the highest at 2,257,575 won even thoughthe amount of biomass will be reduced.

Keywords

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