낙동강권역 동해안 하천의 어류 다양성

Fish surveys were conducted near artificial structures installed in eight streamsflowing from the Nakdong River region to the east coast of Korea. As a result of thesurvey, a total of 20,000 individuals belonging to nine orders, 17 families, and 47species were found. The dominant species was Zacco koreanus, and the subdominantspecies was Pungtungia herzi. Among the surveyed fish species, endangeredspecies were Pseudobagrus brevicorpus (rank I) and Cottus hangiongensis (rank II). In addition, migratory fish species were Oncorhynchus keta, Plecoglossus altivelis,and Tribolodon hakonensis. As a result of community analysis, the highest diversity,dominance, richness, and evenness indices were Wangpi, Chuksan, Gokgang, andJanggi Stream respectively. The highest number of species was surveyed in GokgangStream (25 species). Alpha diversity, the number of species at each survey point ineach stream, was the highest at a survey point in Wangpi Stream (20 species), andbeta diversity, species at each stream survey point that does not overlap with nearbysurvey point, was the highest at survey points in Gokgang Stream (12 species). Asa result of the similarity analysis, surveyed streams were divided into four groups:group 1 (Chuksan, Baeknok Stream), group 2 (Uljinnamdae, Wangpi, YungdeokosipSteam), group 3 (Gokgang Stream), and group 4 (Janggi, Hoeya Stream). This studyis expected to serve as basic data for managing the aquatic ecosystem of streamsflowing from the Nakdong River region to the east coast. KCI Citation Count: 0