Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Vertical Distribution of Mega-invertebrate and Calculation to the Stock Assessment of Commercial Species Inhibiting Shallow Hard-bottom in Dokdo, Korea

독도 연안 암반에 서식하는 초대형 저서동물의 수직분포와 산업종의 현존량 추정

  • 박흥식 (한국해양연구원 해양자원연구본부) ;
  • 강래선 (한국해양연구원 해양자원연구본부) ;
  • 명정구 (한국해양연구원 해양자원연구본부)
  • Published : 2002.12.31
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Abstract

Distribution and stock assessment of mega-benthos living in the shallow hard bottom around Dokdo were studied in July,2000. Depth and topographical conditions have affected to the densities and biomass of benthic animals. In shallow area, less than 10 m depth, turbo shell Batillus cornutus, mussel, Mytilus corusucs were dominated and showed distinct patterns in vertical distribution. On the other hand, the area over 10m depth, it showed diverse pattern depending on topography. Turbo shell, mussel and sea cucumber Stichopus japonicus were dominated in terms of fishery resources, but abalones were rarely sampled. Stock assessment were estimated to be 6.54 M/T, 3.89 M/T and 8.92 M/T, respectively. Some parts of coastal hard bottom around Dokdo, such as the area between Dongdo and Seodo, seemed to play an Important role as nursery ground. Therefore, it is necessary to the environmental monitoring for coastal fishery managements aspects.

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References

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