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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Difference in biomasses depending on apllication of speed over the ground and speed through the water during biomass estimation of Metapenaeus joyneri via swept area methods

소해면적법에 의한 중하(Metapenaeus joyneri) 자원량 추정 시 대지속력과 대수속력 사용에 따른 자원량 차이

  • Young-Hwan JOO (Department of Fisheries Science Kunsan National University) ;
  • Min-Son KIM (Deparment of Public Service in Ocean & Fisheries, Kunsan National University) ;
  • Hyun-Su JO (Fisheries Science Institute, Kunsan National University)
  • 주영환 (국립군산대학교 수산과학과 대학원생) ;
  • 김민선 (국립군산대학교 해양수산공공인재학과) ;
  • 조현수 (국립군산대학교 수산과학연구소)
  • Received : 2024.01.08
  • Accepted : 2024.01.26
  • Published : 2024.02.28
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Abstract

The towing distance, which is speed over the ground, and the water flow quantity, which is speed through the water, were used when estimating the amount of Metapenaeus joyneri resources that rose to the surface at night using the swept area method in order to compare and analyze the difference. It was conducted using a shrimp dredge, trial fishing gear for catching Metapenaeus joyneri. Catch during the entire survey period was 188.9 kg. Monthly catch ranged from 3.1 to 109.2 kg, highest in June and lowest in September. The swept volume calculated using the speed over the ground was about 13% higher than using the speed through the water. Metapenaeus joyneri resources estimated using the towing distance ranged from 320.1 to 14,649.8 kg. Resources estimated using the water flow quantity ranged from 278.5 to 12,886.3 kg. Therefore, the amount of Metapenaeus joyneri resources estimated using the speed over the ground was about 14% higher than the method using the speed through the water, indicating that the amount of resources was overestimated.

Keywords

Acknowledgement

이 논문은 국립군산대학교 수산과학연구소 학술연구비 지원에 의하여 연구가 수행되었습니다.

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