Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Comparison of Geostatistic and Acoustic Estimates of Anchovy Biomass around the Tongyeong Inshore Area

통영 주변 해역에서 멸치 어군에 대한 지리 통계학적 및 음향학적 분포 밀도 추정치의 비교

  • Oh, Taeg-Yun (South Sea Fisheries Research Institute, NFRDI) ;
  • Kim, Joo-Il (South Sea Fisheries Research Institute, NFRDI) ;
  • Seo, Young-Il (South Sea Fisheries Research Institute, NFRDI) ;
  • Lee, Sun-Kil (South Sea Fisheries Research Institute, NFRDI) ;
  • Hwang, Doo-Jin (School of Marine Technology, Chonnam National University) ;
  • Kim, Eun-Ho (South Sea Fisheries Research Institute, NFRDI) ;
  • Yoon, Eun-A (School of Marine Technology, Chonnam National University) ;
  • Jeong, Sun-Beom (School of Marine Technology, Chonnam National University)
  • 오택윤 (국립수산과학원 남해수산연구소) ;
  • 김주일 (국립수산과학원 남해수산연구소) ;
  • 서영일 (국립수산과학원 남해수산연구소) ;
  • 이선길 (국립수산과학원 남해수산연구소) ;
  • 황두진 (전남대학교 해양기술학부) ;
  • 김은호 (국립수산과학원 남해수산연구소) ;
  • 윤은아 (전남대학교 해양기술학부) ;
  • 정순범 (전남대학교 해양기술학부)
  • Published : 2009.06.30
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Abstract

Acoustic technologies are commonly used to estimate biomass and distribution of fisheries resources in coastal areas and the open ocean. The pelagic species of Engraulis japonica, Scomber japonicus and Sardinops melanosticta spawn migrate to the southern part of the Sea of Korea and capture of these three species comprise 50% of the total abundance in Korean waters. Since 1970, anchovy landings have increased to 0.2 million tons in 1990, 0.27 million tons in 2001, and 0.25 million tons in 2003. Acoustic surveys were conducted on 24-26, May and 20-21, June 2005 around the Tongyeong, Geojae, and Namhae anchovy fishing ground using a dual beam echo sounder (DT-5000, 200 kHz Biosonics). Using this approach, information was obtained on the distribution (depth and position) of zooplankton, and adult and juvenile anchovy. We calculated and compared anchovy biomass using simple summation and geostatistic methods to assess the advantages and constraints of the two techniques.

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References

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