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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Acoustic observation of the behavior of fish in an artificial reef

수중 음향 기법을 이용한 인공어초에 서식하는 어류의 행동 특성

  • Yoon, Eun-A. (Division of Marine Technology, Chonnam National University) ;
  • Hwang, Doo-Jin (Division of Marine Technology, Chonnam National University) ;
  • Kim, Ho-Sang (Resources Enhancement Division, Korea Fisheries Resources Agency) ;
  • Lee, Seung-Joo (Resources Enhancement Division, Korea Fisheries Resources Agency) ;
  • Lee, Kyung-Seon (Resources Enhancement Division, Korea Fisheries Resources Agency)
  • 윤은아 (전남대학교 해양기술학부) ;
  • 황두진 (전남대학교 해양기술학부) ;
  • 김호상 (한국수산자원관리공단 자원조성실) ;
  • 이승주 (한국수산자원관리공단 자원조성실) ;
  • 이경선 (한국수산자원관리공단 자원조성실)
  • Received : 2013.12.08
  • Accepted : 2014.02.21
  • Published : 2014.05.31
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Abstract

We aimed to assess the behavior characteristics of fish on an artificial reef using hydroacoustic techniques. The acoustical survey was conducted with a 200 kHz dual beam transducer while fishing on the stone combination reef of Uljin. A school of fish were detected on the artificial reef before sunset and floated on the artificial reef at 30 minutes after sunset. The density (Nautical Area Scattering Coefficient, NASC) of fish that floated on the artificial reef after sunset was about $600m^2/nmi^2$; similar observations (about $50m^2/nmi^2$ or less) were noted after 19:00 hours. Fish caught by fishing on the artificial reef were Sebastes schlegeli, Hexagrammos otakii, Sebastes thompsoni, and Conger myriaster. Resultantly, we demonstrated that hydroacoustic techniques are useful for detecting behavior characteristics of fish in the artificial reef. Such results can be used for basic data to estimate the install effect of the artificial reefs.

Keywords

References

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