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영산강 살리기 사업 이후의 자원회복기간을 고려한 잔존어업피해추정에 관한 연구
추현기 ( Hyun-gi Choo ),조문관 ( Mun-kwan Jo ),김기수 ( Ki-soo Kim ) 한국수산경영학회 2020 수산경영론집 Vol.51 No.4
The paper aims to explore existence and degree of remaining fisheries damages after the completion of undertaking the Four Major Rivers Project focusing on the case of Yeongsan river. The paper seeks to show the necessity of consideration of periods of fishery resources recovery in the estimation of ex-post fisheries damages of the project by inferring the analysis of the annual variation of environmental indicators in the river. Therefore, the paper suggests three years of remaining periods of fisheries damages of the project utilizing the variation trend of ex-ante and ex-post annual output data of inland fisheries in Jeonnam province and individual catch of fisheries. In the measurement of the annual degree of fisheries damages during periods of fishery resources recovery, the paper attempts to suggest the method of comparision of day catch data per vessel between ex-ante and ex-post periods of the project, which were investigated by the same institute. Here the paper tries to make correction of ex-post catch data for holding the same catching condition as ex-ante situation by adopting the concept of competitive intensity of catching which was derived from the decreasing rate of number of fishing households in the area of Yeongsan river.
고리 주변해역에서 출현하는 웅어(Coilia nasus)의 위내용물 조성
백근욱 ( Gun Wook Baeck ),박주면 ( Joo Myun Park ),추현기 ( Hyun Gi Choo ),허성회 ( Sung Hoi Huh ) 한국어류학회 2011 韓國魚類學會誌 Vol.23 No.2
The feeding habits of Coilia nasus were studied using 107 specimens collected from January to December 2005 in the coastal waters off Gori, Korea. The size of C. nasus ranged from 8.4 to 29.5 cm in standard length (SL). C. nasus was a carnivore that mainly consumed shrimps and copepods. Its diet also included small quantities of amphipods, euphausiids and chaetognaths. The feeding strategy graphical method reveled than C. nasus was specialized feeder and showed narrow niche width. Both small and large size class of C. nasus mainly consumed shrimps and copepods, and did not showed significant size-related changes in feeding habits. However, the mean number and weight of preys per stomach was higher than large size class than small size class.