보련산 일대의 어류상

To clarify the structures and functions of ecosystem and to establish the methods for the conservation of natural resources in the Mt. Boryeon, the author surveyed freshwater fish fauna at 6 stations from July 24 to 27, 2006. The collected species during the surveyed period were 15 species belonging to 7 families. Korean endemic species were 8 : Coreoleuciscus splendidus, Squalidus gracilis majimae, Microphysogobio yaluensis, Iksookimia koreensis, Pseudobagrus koreanus, Silurus microdorsalis, Liobagrus andersoni and Odontobutis interrupta, which showed a ratio of 53.3% in all collected species. According to relative abundance in the studies area, Zacco platypus (38.0%), R. oxycephalus (33.0%) and C. splendidus (6.1%) dominated. Hemibarbus longirostris, M. yaluensis, Orthrias nudus, Misgurnus anguillicaudatus, P. koreanus and L. andersoni were rare in the surveyed areas, which occupied less than 2% in relative abundance. Dominant species was R. oxycephalus (St. 1, 2, 4) and Z. platypus (St. 3, 5, 6). According to the diversity, evenness and richness indices, St. 5 and 6 may more stable in fish community than others. S. microdorsalis could be a representative species in Mt. Boyeon.