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한국 완도해역 낭장망 어업의 어획량 변동과 수온의 영향

Fluctuation of Bag-net Catches off Wando, Korea and the Effect of Sea Water Temperature

  • 김진구 (국립수산과학원 남해수산연구소 목포분소) ;
  • 최옥인 (국립수산과학원 서해수산연구소 군산분소) ;
  • 장대수 (국립수산과학원 남해수산연구소) ;
  • 김주일 (국립수산과학원 자원환리과)
  • Kim Jin Koo (Mokpo Laboratory, South Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Choi Ok In (kunssn Laboratory, West Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Chang Dae Soo (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Kim Joo Il (Fisheries Resources Department National Fisheries Research and Development Institute)
  • 발행 : 2002.09.01

초록

우리나라 남$\cdot$서 해역에 위치한 완도 해역에서 1999$\~$2001년 3년간 낭장망에 의한 어획량 변동과 수온과의 관계를 검토하였다. 완도 해역 수온은 1999년과 2001년에는 7$\~$10월 동안 $20^{\circ}C$ 이상을 유지하였으나, 2000년에는 8$\~$9월에만 $20^{\circ}C$ 이상으로 전년과 달리 저수온현상을 보였고, 인공위성 사진을 통하여 우리나라 남$\cdot$서 해역에 강한 전선이 형성되어 있음을 확인할 수 있었다. 완도해역에서 출현한 어류는 73종으로 치어 및 유어가 대부분이었고, 이들 중 앞동갈베도라치, 양태, 전어, 민동갈돔류, 밀복류의 5종은 조석전선이 강하게 발달한 2000년에는 출현하지 않았다. 완도수협 멸치 생산량은 1999년 1,000톤, 2000년 620톤, 2001년 1,056톤으로 7$\~$8월부터 증가 경향을 보이며, 8$\~$10월에 최대를 나타내었다.

Fluctuation of the yield of anchovy, Engraulis japonicus and species composition of by-catch were examined to clarify the effect of sea water temperature using samples by bag net off Wando, west southern of Korea from 1999 to 2001. In 1999 and 2001, sea water temperature were higher than 20$^{\circ}C$ from July to October, However that of 2000 was higher than 20$^{\circ}C$ from August to September owing to the strong tidal front formed in south western area of Korea from late spring to summer. Fish captured by bag net off Wando was composed of approximately 73 species which belonging to the juveniles and young stages. Among them, Gymnapogon urospilotus, Lagocephalus sp., Omobranchus elegans, Platycephalus indicus and Konosirus punctatus did not appeared in 2000 when tidal front were developed stronger than in 1999 and 2001. Yield of anchovy landed at fishery of Wando were 1,000 M/T in 1999, 620 M/T in 2000, 1,056 M/T in 2001 respectively and have a tendency to increase from July to August and reach to maximum from August to October.

키워드

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  8. 2005년 하계 완도 연안 냉수대 발생시 식물플랑크톤의 분포 특성 vol.17, pp.9, 2002, https://doi.org/10.5322/jes.2008.17.9.949
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