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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Long term variations of fish assemblage in the coastal waters Bukchon-ri, northern part of Jeju Island from 2012 to 2022

제주도 북부 북촌리 연안에서 어획된 어류군집의 장기변화(2012~2022)

  • Jun-Cheol KO (Subtropical Fisheries Research Institute, NFIS) ;
  • Bo-Yeon KIM (Subtropical Fisheries Research Institute, NFIS) ;
  • Song-Heon HAN (Subtropical Fisheries Research Institute, NFIS) ;
  • Min-Sun KIM (Subtropical Fisheries Research Institute, NFIS) ;
  • Jung-Hyun KWAK (Subtropical Fisheries Research Institute, NFIS)
  • 고준철 (국립수산과학원 아열대수산연구소) ;
  • 김보연 (국립수산과학원 아열대수산연구소) ;
  • 한송헌 (국립수산과학원 아열대수산연구소) ;
  • 김민선 (국립수산과학원 아열대수산연구소) ;
  • 곽정현 (국립수산과학원 아열대수산연구소)
  • Received : 2023.09.18
  • Accepted : 2023.10.27
  • Published : 2023.11.30
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Abstract

Long term variations of fish assemblage in the coastal waters of Bukchon-ri were determined using samples collected by trammel net from 2012 to 2022. Water temperature increased by 0.4℃ in 2022 that was less then 2012. During the survey period, a total of 95 species (53 families and 15 orders) of fishes were identified, Scorpaeniformes (five families and 22 species) and Perciformes (25 families and 39 species) accounted for 73% of the total number. The number of species was higher in summer than winter, showing a peak in summer at 66 species and lower in winter and autumn at 45 species. The number of individuals and the biomass peaked in summer at 1,238 individuals and 280.1 kg, and were the lowest in autumn at 597 individuals and 155.4 kg. The annual diversity index, evenness index and richness index were appeared 2.11-2.80, 0.64-0.80 and 4.70-7.34 at each years. The dominance index were appeared highest in 2014 while 2021 were appeared the lowest in 2017. The subtropical fishes were identified total of 38 species (40.0%) and the number of species was higher in 2022 at 22 (52.4%) species and lower in 2015-2017 at each 10 (31.3-37.0%) species. The dominant species of subtropical fishes were appeared rabbit fish (Siganus fuscescens), boxfish (Ostracion immaculatus), smallscale blackfish (Girella melanichthys), flag fish (Goniistius zonatus), stripey (Microcanthus strigatus), rock porgy (Oplegnathus punctatus), and bluestriped angelfish (Chaetodontoplus septentrionalis) in study sites.

Keywords

Acknowledgement

본 연구는 국립수산과학원 아열대수산연구소 「제주 주변 연근해어업 및 환경생태조사 R2023012」의 지원으로 수행된 연구 입니다.

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