This study was conducted to provide the basic information on environment effects on appearance of ichthyoplankton in the Yeongsan River Estuary in Spring and Summer from 2018 to 2020. Data were obtain from the database of ‘Coastal Ecosystem’ in “National Survey of Marine Ecosystem.” Among the abundance ichthyoplankton species, the Gobiidae spp. dominated, accounting for 85% of the total abundances with the secondary dominant species being the Parablennius yatabei, representing 3% of the abundances. Cluster analysis results revealed a composition differentiated between spring and summer. The Yeongsan River Estuary is known to be significantly influenced by the opening and closing of estuarine gates. In this study, the fluctuation in the number of occurrence groups and abundance among the years and season is attributed to the phenomenon of high water temperature period and the freshwater discharge.

서 론
재료 및 방법
결 과
    해양환경
    해양환경과 상관관계
    종조성
    군집분석
고 찰
결 론
References

• 진병선(안양대학교 해양바이오공학과 교수) | Byung Sun CHIN (Professor, Department of Marine Biotechology, Anyang University, Icheon 23038, Korea) Corresponding author