한국수산과학회

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  • pISSN : 2234-8395
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  • eISSN : 2234-1757

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kfas, vol. 52, no. 3, pp.288-297, June, 2019
DOI. https://doi.org/10.5657/KFAS.2019.0288

Biomass Estimation with a Hydroacoustic Survey and the Shrimp Beam
Trawl Fishery in Gwangyanh Bay in Summer
하계 광양만 주변 해역의 새우조망 어획조사 및 수산자원 음향조사

한인우·오우석·박근창·윤은아1·이경훈1*
전남대학교 수산과학과, 1전남대학교 해양기술학부

This study conducted a survey using a sampling inspection method and acoustic technique for continuous monitoring
of useful organisms and non-commercial fish species distributed in the water of Gwangyang Bay, and evaluated
the marine resources. In June, 2018, 38 species were caught in the shrimp beam trawl, comprising 3,594 marine
organisms with a total weight was 65,415.3g. The acoustic survey showed that the nautical area scattering coefficient
(NASC; m2/n.mile2) for the waters of Gwangyang Bay was highest in Transect 15 (1,655.5 m2/n.mile2) and lowest in
Transect 1 (1.3 m2/n.mile2). The biomass was estimated to be 2,634.9 tons in the acoustic survey. This indicates that
the acoustic survey method detected more fish shoals than the sampling inspection method.

Keyword : Shrimp beam trawl, Gwangyang bay, NASC, Hydroacoustic survey

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