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A study on fluctuation of the fishing grounds of target fishes by the Korean large purse seine fishery

대형선망어업의 주요 목표종의 어장 변동

  • Lee, Jong-Hee (Fisheries Resources Research Division, NFRDI) ;
  • Lee, Jae-Bong (Fisheries Resources and Environment Division, East Sea Fisheries Institute) ;
  • Zhang, Chang-Ik (Division of Marine Production System management, Pukyong National University) ;
  • Kang, Su-Kyung (Fisheries Resources Research Division, NFRDI) ;
  • Choi, Young-Min (Fisheries Resources and Environment Division, East Sea Fisheries Institute) ;
  • Lee, Dong-Woo (Fisheries Resources Research Division, NFRDI)
  • 이종희 (국립수산과학원 자원관리과) ;
  • 이재봉 (동해수산연구소 자원환경과) ;
  • 장창익 (부경대학교 해양생산시스템관리학부) ;
  • 강수경 (국립수산과학원 자원관리과) ;
  • 최영민 (동해수산연구소 자원환경과) ;
  • 이동우 (국립수산과학원 자원관리과)
  • Received : 2012.05.01
  • Accepted : 2012.05.16
  • Published : 2012.05.31

Abstract

Korean large purse seine fishery catches chub mackerel, sardine, jack mackerel, Spanish mackerel, etc. which are mainly pelagic fish species. The proportion of chub mackerel was 60% over in Korean large purse seine fishery. Sea surface temperature (SST) increased $0.0253^{\circ}C$ per year and total rising rate was $0.759^{\circ}C$ from 1980 to 2009 in the southern sea of Korea, where is mainly fishing grounds of Korean large purse seine. It was that p<0.01 level was statistically significant. It is northward movement that the center of fishing grounds of chub mackerel by Korean large purse seine fishery moved 4.57km/yr. It was rapidly northward movement about 7.1km/yr, 8.13km/yr to move Spanish mackerel and bluefin tuna fishing grounds. However, the fishing grounds of jack mackerel were moved further south in the 2000s than the 1980s. Catch of tunas and bluefin tuna consistently increased in Korean waters. There was a significantly positive correlation between SST and catch of bluefin tuna in the fishing grounds of Korean waters.

Keywords

Korean large purse seine fishery;Chub mackerel;Bluefin tuna;SST;Korean waters

Acknowledgement

Grant : 연근해 어업자원 평가 및 관리 연구

Supported by : 국립수산과학원

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