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신규로 건설된 군위댐 호내 어류 군집 및 생태적 특성에 관한 연구 KCI 등재

Study on Characteristics of Community and Ecology of Fishes in the Newly Constructed Gunwi Dam Reservoir

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  • URLhttps://db.koreascholar.com/Article/Detail/311531
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생태와 환경 (Korean Journal of Ecology and Environment)
초록

To secure water resources, dams are normally constructed on the upper - middle part of streams, and it generates physical disturbances such as habitat alteration and stream fragmentation. Such construction can restrict movement of aquatic organisms, especially for freshwater fish which is one of top predator in aquatic ecosystem, and cause genetic fragmentation and community change. In this study, to investigate impact of habitat alteration after dam construction on freshwater fish, we monitored fish community changes, and compared fish fauna between dam reservoir and inflows. Additionally, movement characteristics and habitat boundaries of four species were identified by radio telemetry method. The study was conducted in the Gunwi Dam which was constructed in December 2010. Radio telemetry was applied to Pungtungia herzi, Zacco platypus (living lotic and lentic), Silurus asotus (lentic preferred species) and Zacco koreanus (lotic preferred species). The number of species was remarkably decreased (4 family, 10 species) comparing with before the dam construction (7 family, 15 species). Specifically, Coreoleuciscus splendidus, Niwaella multifasciata, Liobagrus mediadiposalis, Coreoperca herzi and Odontobutis platycephala that inhabit in the lotic environment were not collected in the study area. A total of 8 species were caught in both the dam reservoir and tributaries except 2 species (C. auratus and S. asotus). Sorenson’s similarity between the reservoir and its tributaries was high (0.842). All of the radio tagged species stayed in the reservoir except S. asotus which moved to the tributary. These species mainly utilized the shallow littoral zone as a habitat. These results could be useful as a baseline data for efficient management of fishes in lakes.

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REFERENCES
저자
  • 이진웅(공주대학교 생물교육과) | Lee, Jin-Woong
  • 윤주덕(공주대학교 생물자원연구센터) | Ju-Duk Yoon
  • 김정희(공주대학교 생물교육과) | Jeong-Hui Kim
  • 박상현(공주대학교 생물교육과) | Sang-Hyeon Park
  • 백승호(공주대학교 생물교육과) | Seung-Ho Baek
  • 장광현(경희대학교 환경학 및 환경공학과) | Kwang-Hyeon Chang
  • 장민호(공주대학교 생물교육과) | Min-Ho Jang Corresponding author