논문 상세보기
소해면적법에 의한 중하(Metapenaeus joyneri) 자원량 추정 시 대지속력과 대수속력 사용에 따른 자원량 차이 KCI 등재
Difference in biomasses depending on apllication of speed over the ground and s peed t hrough t he w ater d uring b iomass e stimation o f Metapenaeus joyneri v ia s wept a rea m ethods
pp.27-36
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.
재료 및 방법
결 과
월별 정선별 중하 어획량() 및 CPUE
조류 방향별 중하 어획량 및 CPUE
조사해역의 해수체적() 계산
소해면적의 해수체적(, ) 계산
중하의 단위체적당어획량(), 단위체적당자원량() 및자원량() 추정
고 찰
결 론
사 사
References
