Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Species composition and abundances of ichthyolplankton in Yeongsan River Estuary in Spring and Summer

영산강 하구역의 춘계와 하계에 출현하는 어류플랑크톤의 종조성과 개체수

  • Byung Sun CHIN (Department of Marine Biotechology, Anyang University)
  • 진병선 (안양대학교 해양바이오공학과)
  • Received : 2024.01.19
  • Accepted : 2024.02.23
  • Published : 2024.02.28
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Abstract

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.

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