여자만 입구 해역에서 소형기선저인망에 어획된 어류의 종조성 및 군집분석

Abstract

Community structure and species composition of fish in the mouth of Yeoja bay were investigated using samples collected by a small otter trwal in March and August, 2019. A total of 3,198 fishes were sampled and classified into 38 species, 27 families, and 9 orders. The dominant species was Pennahia argentata (505 individuals, 15.8%), Ilisha elongata (234 individuals, 7.3%), and Engraulis japonicus (222 individuals, 6.9%). The highest number of individuals was found in St. 2 (1,516 individuals), while the lowest number of individuals was found in St. 3 (663 individuals). The richness index was the highest in St. 2 (RI=3.69) and the lowest in St. 3 (RI=3.39). The evenness index was the highest in St. 3 (E=0.91) and the lowest in St. 2 (E=0.86). The diversity index was the highest in St. 1 (H’=2.96) and the lowest in St. 2 (H’=2.85). The dominance index was the highest in St. 2 (D=31.4%) and the lowest in St. 1 (D=23.2%).