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

  • 제52권3호
  • /
  • Pages.209-219
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  • 2016
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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제주도 마라도 연안해역의 어업생물자원에 대한 분포밀도의 음향학적 조사

Hydroacoustic survey on distribution and density of fisheries resources in the Marado coastal area of Jeju, Korea

  • 서영일 (국립수산과학원 연근해자원과) ;
  • 오택윤 (국립수산과학원 연근해자원과) ;
  • 차형기 (국립수산과학원 연근해자원과) ;
  • 이경훈 (전남대학교 해양기술학부) ;
  • 윤은아 (전남대학교 해양기술학부) ;
  • 황보규 (군산대학교 해양생산학과) ;
  • 이유원 (한국해양수산연수원 교육연구팀) ;
  • 김병엽 (제주대학교 해양산업경찰학과)
  • SEO, Young-Il (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • OH, Taeg-Yun (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • CHA, Hyung-Kee (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • LEE, Kyounghoon (Division of Marine Technology, Chonnam National University) ;
  • YOON, Eun-A (Division of Marine Technology, Chonnam National University) ;
  • HWANG, Bo-Kyu (Department of Marine Production, Kunsan National University) ;
  • LEE, Yoo-Won (Education and Research Team, Korea Institute of Maritime and Fisheries Technology) ;
  • KIM, Byung-Yeob (Department of Marine Industrial and Maritime Police, Jeju National University)
  • 투고 : 2016.06.13
  • 심사 : 2016.08.12
  • 발행 : 2016.08.31
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초록

The survey was conducted to investigate biomass and distribution of fisheries resources using a quantitative echo sounder and a fixed gillnet around Marado coast of Jeju to obtain the scientific basic data for dispute resolution with a large purse seine fishery and coastal fishing and policy establishment of reasonable fisheries resources. Hydroacoustic surveys were conducted six times (November 28~29, 2015 (night), February 23~24, 2016 (night) and March 3~4, 2016 (night/day), March 30~31, 2016 (night/day)) using a quantitative echo sounder. The pelagic fish densities were relatively higher around Marado in November 2015, February 2016 and March 3~4, 2016. However, demersal fish densities were relatively higher in Jeju coastal waters on March 30~31, 2016. Catch data using fixed gill net were used to calculate biomass. Based on the hydroacoustic data, fish length-weight function and target strength information of dominant fish, the biomass of fishes were estimated as follow: 5.64 ton CV = 70.2% at night on November 28-29 2015, 7.14 ton CV = 35.8% of pelagic fish and 530.77 ton CV = 34.6% of demersal fishes at night on February 23-24 2016, 2.34 ton CV = 56.7% of pelagic fish and 571.93 ton CV = 40.3% of demersal fish at daytime, 1.39 ton CV = 48.4% of pelagic fish and 194.59 ton CV = 54.3% of demersal fish at night on March 3~4 2016, 0.37 ton CV = 72.9% of pelagic fish and 338.79 ton CV = 99.7% of demersal fish at daytime, 0.24 ton CV = 21.3% of pelagic fish and 68.61 ton CV = 53.8% of demersal fish at night on March 30~31 2016.

키워드

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