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환경요인에 따른 동복호에서의 식물성플랑크톤 계절적 분포
The Seasonal Distribution of Phytoplankton by Environmental Factors in Dongbok Reservoir

정진    (광주광역시 상수도사업본부 수질검사소   ); 조영관    (광주광역시 상수도사업본부 수질검사소  );
  • 초록

    The taxa of phytoplankton in the Dongbok reservoir consisted of 6 classes, 9 orders, 4 4 suborders, 21 families, 42 genus, 86 species, 4 varieties and 1 formula; totally 91 t taxa appeared. It contained 3 major groups that is Chlorophyceae 51 taxa(56.0 % the most high rate), Bacillariophyceae 23taxa(25.2%), Cyanophyceae 10taxa(10.9%). The most abundant with 47 taxa was in December, the least with 11 taxa was in March during research every month. The component ratio of biomass each main groups, Bacillariophyceae(51 %, the most h high rate), Cyanophyceae(38.9%), Chlorophyceae(9.8%). The most abundant class at the biomass component ratio were Cyanophyceae which contained 82.6-98.0 % of it in May and September, Chlorophyceae 79.0% in August, and Bacillariophyceae increased continuously, specially in winter and autumn. The seasonal dominant groups were Microcystis aemginosa belong to Cyanophyceae in spring and autumn, some species of Chlorophyceae in summer and Melosira granulata belong to Bacillariophyceae in winter and late autumn. Dominant index ranged from 0.33 to 0.95. The season of the lowest index was autumn and the highest was spring. Species diversity indices ranged from 1.09 to 3.99. The water environmental factors of the Dongbok reservoir were that the values of water temperature ranged between $2.4~28.9^{\circ}C$ , pH 7.2~8.3, conductivity 77.0~105.5us/cm, and transparency 1.2~2.8m, also the concentration of dissolved oxygen(DO) ranged of 6.9-14.6mg/L, total nitrogen(T-N) 0.38-1.84mg/L, total phosphorus (T-P) 0.011~0.028mg/L, and chlorophyll-a $7.0~29.9mg/m^3$ . In this research the proper temperature of water for algae growth, $15~20^{\circ}C$ , was maintained in April. May, November and December 1 The number of species that induced water color were 14 species, that caused taste-and-odor problems were 3 species and that caused filter clogging were 5 species. A Among them, the bloom of Anahaena macrospora that caused odor problem occurred l in May and of Microcystis aeruRinosa and M. lνensenberRii that caused filter clogging in May and September.


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  • 정진 (2)

    1. 1998 "주암호 조류 분포의 계절별 변화에 관한 연구" 大韓衛生學會誌 = The Korean journal of sanitation 13 (2): 1~13    
    2. 2001 "동복호 조류군집의 다녀간 변화에 관한연구" 한국환경위생학회지 = Korean journal of Environmental Health Society 27 (2): 67~72    

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