지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
The objective of this study was to evaluate seasonal patterns and diel variations of fish movements in the Juksan Weir which was constructed in 2010 at the down-stream of Yeongsan-River watershed. For this study, we monitored day-and-night movement(24 Hr cycle) and seasonal fish migration(June ∼ August) patterns in 2011 along with species compositions and abundances depending on the locations of the traps within the fishway. Total number of species sampled was 14 and the total number of individuals was 1263 with only the size-fractions(as total length) of the fish < 20 cm during the study. Seasonal analysis of fish movement in the fish way showed that highest frequency in the movement occurred in June - July, which is closely associated with a spawning peak season. The most dominant species using the fishway was Squalidus chankaensis tsuchigae, and this species turned out to be 26.9% of the total in the use rate of fishway. Daily monitoring of fish movements showed that most frequent movements occurred between 18:00 PM and 21:00 PM when the fish have a feeding time generally. The migratory fish were not found in the fishway during the study. Mean current velocity during the study 0.42 ± 0.02 ms-1(n = 42), and there were no significant statistical differences(p > 0.05) among the daily and monthly velocities in the fishway. The use rate of fish passage, in terms of fish species, was 48%, compared with total sampling of fish species(29 species) at the down-river regions during the same period, indicating a low use rate. Further continuous long-term monitoring should be conducted to evaluate the impacts of the weir construction in the river.
목차
등록된 정보가 없습니다.
참고문헌 (31)
참고문헌 신청
Barry, T / 1986 / Attraction of adult American shad to fish lifts at Holyoke Dam, Connecticut River / North American Journal of Fisheries Management 6 : 233 ~ 241
Bubb, D.H / 2002 / The potential use of PIT telemetry for identifying and tracking crayfish in their natural environment / Hydrobiologia 483 : 225 ~ 230
Clay, C.H. / 1995 / Design of Fishways and Other Fish Facilities / Lewis Publishers
Cote, O / 2002 / Activity patterns of juvenile Atlantic cod(Gadus morhua) in Buckley Cove, Newfoundland / Hydrobiologia 483 : 121 ~ 127
Fausch, K.D / 1995 / Evolutionary significant units and movement of resident stream fishes: a cautionary tale, Evolution and the aquatic ecosystem: defining unique units in population c
Bubb, D.H / 2002 / The potential use of PIT telemetry for identifying and tracking crayfish in their natural environment / Hydrobiologia 483 : 225 ~ 230
Clay, C.H. / 1995 / Design of Fishways and Other Fish Facilities / Lewis Publishers
Cote, O / 2002 / Activity patterns of juvenile Atlantic cod(Gadus morhua) in Buckley Cove, Newfoundland / Hydrobiologia 483 : 121 ~ 127
Fausch, K.D / 1995 / Evolutionary significant units and movement of resident stream fishes: a cautionary tale, Evolution and the aquatic ecosystem: defining unique units in population c
이 논문의 저자 정보
최근 본 자료
댓글(0)
0