Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Changes in Marine Algal Communities around Gijang Busan, Korea

부산시 기장 주변 해역의 해조 군집 변동

  • Yoo, Jong Su (Leaders in Industry University Cooperation, Pukyong National University) ;
  • Kim, Jong-Myoung (Department of Marine Bio-Materials and Aquaculture, Pukyong National University) ;
  • Choi, Chang Geun (Department of Ecological Engineering, Pukyong National University)
  • 유종수 (부경대학교 LINC 사업단) ;
  • 김종명 (부경대학교 해양바이오신소재학과) ;
  • 최창근 (부경대학교 생태공학과)
  • Received : 2013.05.20
  • Accepted : 2013.05.30
  • Published : 2013.06.30
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Abstract

Marine algal flora and community structure were investigated seasonally at three sites in Gijang on the south-east coast of Korea from February 2006 to January 2007. A Total of 74 species were collected and identified, including 8 green algae, 16 brown algae, and 50 red algae. Of these, 15 species were found throughout the survey period. Mean biomass was 823.2-1,615.4 g wet weight $m^{-2}$ in winter, 689.1-3,196.8 g wet weight $m^{-2}$ in spring, 574.5-1,219.9 g wet weight $m^{-2}$ in summer, and 747.6-1,616.2 g wet weight $m^{-2}$ in autumn. The flora could be classified into six functional groups: coarsely branched form (37.8%), thick leather form (18.9%), sheet form (13.5%), filamentous form (12.2%), jointed calcareous form (10.8%) and crustose form (6.8%). The R/P, C/P and (R+C)/P values reflecting the flora characteristics were 3.13, 0.50 and 3.63, respectively. The number of marine algae species and the biomass in Gijang area were markedly reduced when compared with previous studies. This result suggests possible future changes in the algal vegetation, considering the physical and chemical pollution loadings in the coastal marine environment of this area.

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