Abstract
Seasonal fluctuations in the abundance and species composition of fishes in coastal waters off Asan bay were investigated from April, 2012 to January, 2013. A total of 3,057 fishes were sampled and classified into 71 species, 35 families, and 11 orders. Of the 11 orders, Perciformes, Scorpaeniformes, and Pleuronectiformes accounted for approximately 61.97% of the fishes in this area. Of 71 species identified, Engraulis japonicus, Leiognathus nuchalis, Trichiurus japonicus, Pholis fangi, and Konosirus punctatus accounted for 36.57% of collected fishes. The highest number of individuals was found in July, while the lowest in January. The richness index was highest in July (RI=7.103) and the lowest in January(RI=4.708). The eveness index was the highest in July(E=0.912) and the lowest in October(E=0.766). The diversity index was the highest in July(H’=1.429) and the lowest in October(H’=2.862).
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