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http://dx.doi.org/10.12652/Ksce.2012.32.1B.071

Comparision of Physical Habitat Suitability Index for Fishes in the Rivers of Han and Geum River Watersheds  

Kang, Hyeongsik (한국환경정책.평가연구원 물환경연구실)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.1B, 2012 , pp. 71-78 More about this Journal
Abstract
The habitat suitability is an important factor to estimate the distribution and size of the physical habitat in river. This suitability is also a key factor to decide the ecological flow discharge for the fish. For the ecological analysis in river, accurate values of habitat suitability index for various fishes are necessary. In general, fish habitat is affected by the physical factor of the flow depth and velocity as well as the chemical and biological factors of nutrient and attached algae. Thus, the condition of the fish habitat is expected to be changed with each watershed and tributary. In this study, the habitat suitability indices for fishes were proposed by using the field monitoring data in the rivers of the Han and Geum river watersheds. The proposed indices for three fishes are compared: Zacco platypus, Zacco temminckii, and Coreoleuciscus splendidus. The results show that Zacco platypus has a similar distribution of habitat suitability index in two watersheds. Zacco temminckii and Coreoleuciscus splendidus, however, have different distributions with watersheds. Also, for Zacco platypus, the developed indices at three tributaries of the Han river are compared: Cheng-mi stream, Dal stream, and Hong-cheon stream. The comparision shows that the index in the Cheng-mi stream is different with those in the other rivers. This is expected to be because of a high nutrient concentration at the Cheong-mi stream.
Keywords
habitat suitability index; fish; han river watershed; keum river watershed; nutrient;
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Times Cited By KSCI : 3  (Citation Analysis)
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