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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.1
- 수록면
- 111 - 119 (9page)
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초록· 키워드
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To monitor changes of fish assemblage, we selected 5 study sites in lower-middle part of the Mankyeong (3 sites) and the Dongjin (2 sites) River, and conducted field sampling 2 to 4 times per year from 2007 to 2009. Total sampled fishes were 66 species in 16 families. Cyprinidae (RA, 73.25%; 33 species) was dominant family. Dominant species was Zacco platypus (RA, 19.96%), and subdominant species was Chelon haematocheilus (RA, 11.11%). There were 18 Korean endemic species (RA, 12.56%) and one endangered species, Liobagrus obesus, was only found in the Mankyeong River. Three exotic species were found: Carassius cuvieri, Micropterus salmoides and Lepomis macrochirus. Fish assemblages showed similar occurrence patterns around the sampling periods. As a result of species number comparison between before and after dike construction at MR1 and MR2, there was no huge difference. When fishes were classified into two types, primary freshwater and peripheral species, using habitat characteristics, number of primary freshwater species was increased from 14 to 21 after dike construction. Moreover, relative occurrence rate of primary freshwater species was increased to 53% compared with before construction (18%). On the other hand, number of peripheral freshwater species was decreased from 29 to 19 after dike construction. As a result of cluster analysis using Jaccard method, fish community before and after dike construction was distinguished each other.
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