Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
권호 표지

A Study on Yearly Variation of Algae Community in Dongbok Reservoir

동복호 조류군집의 다녀간 변화에 관한연구

  • Jeong, Jin (Water Quality Research Institute of Waterworks Gwangju) ;
  • Cho, Young-Gwan (Water Quality Research Institute of Waterworks Gwangju) ;
  • Ko, Chang-Ok (Dept. of Civil engineering, Chosun University) ;
  • Kim, Un-Jung (Dept. of Civil engineering, Chosun University)
  • 정진 (광주광역시 상수도사업본부 수질연구소) ;
  • 조영관 (광주광역시 상수도사업본부 수질연구소) ;
  • 고창옥 (조선대 토목공학과) ;
  • 김운중 (조선대 토목공학과)
  • Published : 2001.06.01
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Abstract

The algae in Dongbok reservoir consists of 6 class, 14 orders, 30 families, 63 genera, 145 species, 13 varieties, and 1 formula in 159 taxa during jan. 1995 to Dec. 1999. Species numbers according to major taxa were appeared as Chlorophyceae 80 taxa, Bacillariophyceae 28 taxa, and Cyanophyceae 17 taxa. The ratio of total standing crops were Bacillariopyceae 44%, Cyanophyceae 30%, and Chlorophyceae 225. Various species remarkably appeared during fall to early winter comparing with other seasons. Stnading crops of algae decreased from 1.1~3.7 million units/$\ell$ in 1995 to below 1.0 million n\\units/$\ell$ ever after 1996. Species number was very variable as 9~37 in down stram comparing with 12~34 in middle stream, 15~24 in upper stream. Species diversity indices were 1.1~4.0 in 1995, 1.5~3.5 in 1996~1997, 2.1~3.6 in 1998, and 0.3~3.4 in 1999. Dominant indices were 0.35~0.97 in 1995, 0.44~0.86 in 1996, 0.43~0.89 in 1997, 0.39~0.80 in 1998, and 0.45~0.97 in 1999.

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