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Change of relative fishing power index from technological development in the offshore large powered purse seine fishery

근해대형선망어업에서 어로기술개발에 따른 어획성능지수 변동

  • SEO, Young-Il (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • HWANG, Kang-Seok (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • CHA, Hyung-Kee (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • OH, Taeg-Yun (Dokdo Fisheries Research Center, National Institute of Fisheries Science) ;
  • JO, Hyun-Su (Department of Marine Production, Kunsan National University) ;
  • KIM, Byung-Yeob (Department of Marine Industrial and Maritime Police, Jeju National University) ;
  • RYU, Kyong-Jin (Education Management Team, Korea Institute of Maritime and Fisheries Technology) ;
  • LEE, Yoo-Won (Education Management Team, Korea Institute of Maritime and Fisheries Technology)
  • 서영일 (국립수산과학원 연근해자원과) ;
  • 황강석 (국립수산과학원 연근해자원과) ;
  • 차형기 (국립수산과학원 연근해자원과) ;
  • 오택윤 (국립수산과학원 독도수산연구센터) ;
  • 조현수 (군산대학교 해양생산학과) ;
  • 김병엽 (제주대학교 해양산업경찰학과) ;
  • 류경진 (한국해양수산연수원 교육운영팀) ;
  • 이유원 (한국해양수산연수원 교육운영팀)
  • Received : 2017.01.19
  • Accepted : 2017.02.05
  • Published : 2017.02.28

Abstract

Lots of fishery stocks are overexploited and the overcapacity exists in Korean fishing fleets. One of the reasons is technological development, which increases the efficiency of the vessels continuously. The analysis was conducted to identify the change of fishing power index to develop the vessel and gear technology that may have improved the fishing efficiency of the offshore large powered purse seine fishery from 1960s to 2010s. Gross tonnage and horse power per fishing vessel was increased annually. Fishing gear material was changed to the knotless webbing to settle faster. Fishing equipments was modernized and supply rate was also increased. Therefore the relative fishing power index in the offshore large powered purse seine fishery increased from 0.4 in 1970 to 1.0 in 1980, to 1.5 in 2000 and to 1.6 in 2010, but the rate of increase slowed down gradually. The results are expected to contribute to reasonable fishery stock management.

Keywords

Fishing power index;Offshore large powered purse seine fishery;Fishing vessel;Fishing gear;Fishing equipments

Acknowledgement

Supported by : 국립수산과학원

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