STUDY ON OVERALL EVALUATION METHODOLOGY OF THE HABITAT SUITABILITY OF FISHES BY USING THE PHYSICAL CHARACTERISTICS

• Published in: PROCEEDINGS OF HYDRAULIC ENGINEERING Vol. 47; pp. 1123 - 1128
• Main Authors: KUMAKI, Tomoko, SUNADA, Kengo, KAWAMURA, Kazuya
• Format: Journal Article
• Language: English
• Published: Japan Society of Civil Engineers 2003
• Subjects: flow characteristics; habitat suitable evaluation; PHABSIM; river environment
• ISSN: 0916-7374; 1884-9172
• DOI: 10.2208/prohe.47.1123

Research on evaluation methodology of ecological conditions in river is needed for preservation and maintenance of its environment. In this study, applicability of the PHABSIM (Physical Habitat Simulation Model) of fishes to a river channel system was examined for getting a method of basin wide evaluation of the habitat suitability. At first, a new index to evaluate the habitat suitability of fishes (S) was defined from the PHABSIM. In the next, the value of S at each cross section of the Fuji River was calculated using hydraulic conditions in the various stage of the flow, and then distribution of S along the river was discussed. At last, the value of S was compared with field data of total number of fishes caught at representative cross sections of the river. The results show that the index of the suitability has possibility to present a new method of suitability of fish habitat.