한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제57권5호
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  • Pages.589-597
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  • 2024
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  • 0374-8111(pISSN)
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  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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한국 연근해 고등어(Scomber japonicus) 자원의 시공간과 환경요인을 고려한 CPUE 표준화

CPUE Standardization Considering Spatio-temporal and Environmental Variables of Chub Mackerel Scomber japonicus in Korean Waters

  • 김무진 (국립수산과학원 수산자원연구부 연근해자원과) ;
  • 윤석진 (국립수산과학원 수산자원연구부 연근해자원과) ;
  • 지환성 (국립수산과학원 수산자원연구부 연근해자원과) ;
  • 방민경 (한국해양과학기술원 해양순환기후연구부) ;
  • 김창신 (국립수산과학원 기후환경연구부 기후변화연구과) ;
  • 강희중 (국립수산과학원 수산자원연구부 연근해자원과)
  • Moo-Jin Kim (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • Seokjin Yoon (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • Hwan-Sung Ji (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • Minkyoung Bang (Ocean Circulation and Climate Research Department, Korea Institute of Ocean Science and Technology) ;
  • Chang Sin Kim (Ocean Climate & Ecology Research Division, National Institute of Fisheries Science) ;
  • Heejoong Kang (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science)
  • 투고 : 2024.09.04
  • 심사 : 2024.10.15
  • 발행 : 2024.10.31
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초록

The chub mackerel Scomber japonicus is the most important commercial species caught primarily by large purse seine fisheries. The effective management of chub mackerel resources requires a thorough understanding of the current stock status and the factors driving its fluctuations. The catch per unit effort (CPUE) is a crucial index representing the relative abundance of resources, and CPUE standardization was applied using a generalized linear model and generalized linear mixed model (GLMM). This study adopted various explanatory variables including spatiotemporal factors of Year, Month and Area (spatial clustering), and environmental factors of seawater temperature at a depth 50 m ((T50) and Tsushima Warm Current transport (TWC) and catch ratio of chub mackerel (Ratio). The GLMM, which incorporates random effects, was identified as the optimal model. Ratio had the most significant effect on the CPUE, and environmental and spatio-temporal factors had significant influences. Although the nominal CPUE showed an increasing trend across different areas, the standardized CPUE either decreased or exhibited a decreasing rate of increase. These findings serve as fundamental data for stock assessment and contribute to the spatiotemporal and environmentally informed management of chub mackerel resources in Korean waters.

키워드

과제정보

본 연구는 2024년도 국립수산과학원 수산과학연구사업(R2024006)으로 수행되었습니다.

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