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수중음향을 이용한 우리나라 서·남해 해역에서의 어류와 먹이생물의 상관관계
유은화(Eunwha YOO),이근우(Geunwoo LEE),오우석(Wooseok OH),이경훈(Kyounghoon LEE) 전남대학교 어업기술연구소 2022 어업기술연구소보고지 Vol.15 No.1
Based on underwater acoustics, this study examined the Relationship between fish and zooplankton in the west-south seas. The acoustic data collected by echo sounder (Simrad EK60 and EK80) aboard the NIFS research vessel were analyzed using Echoview version 8.0. This study was carried out in the west-south seas where acoustic data was collected four times in August and September 2019 and February and May 2020. The results showed that the average nautical area scattering coefficient (NASC) of fish was the highest in May 2020 at 110.94 ㎡/nmi² and the lowest in September 2020 at 55.31 ㎡/nmi². The average NASC value of zooplankton was highest in May 2020 and lowest in September 2020 at 8.78 ㎡/nmi². There was a significant Relationship between fish and zooplankton (R²) with R²=0.696 in May 2020 and lowest Relationship with R²=0.039 in August 2019. During the day time, the Relationship between fish and zooplankton(R²) was highest in May 2020, with R²=0.668, and lowest in February 2020, with R²=0.001. During the night time, the Relationship between fish and zooplankton(R²) was highest in May 2020 with R²=0.245 and lowest in February 2020 with R²=0.009.
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