Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Seasonal Succession of Algae in Artificial Reservoirs in Daegu City

대구지역 인공저수지 조류의 계절별 천이

  • 이찬형 (대구광역시 보건환경연구원) ;
  • 정윤숙 (대구광역시 보건환경연구원) ;
  • 신상희 (대구광역시 보건환경연구원) ;
  • 이순애 (대구광역시 보건환경연구원) ;
  • 김용혜 (대구광역시 보건환경연구원) ;
  • 홍성희 (대구광역시 보건환경연구원)
  • Published : 2002.09.01
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Abstract

Seasonal succession of algae and water quality parameters were studied in artificial reservoirs in Daegu city from 2000 to 2001. The algal succession was evaluated with respect to dom-inant class and their frequencies. Succession order of algae in two reservoirs was : Bacillariophyceae longrightarrow Chlo-rophyceae longrightarrow Cyanobacteria longrightarrow Bacillariophyceae longrightarrow Bacillariophyceae longrightarrow Cyanobacteria longrightarrow Cyanobacteria longrightarrow Cyanobacteria. This succession order was different from other studies. The local environment condition maybe affects the succession of algae in these reservoirs. As result of correlation analysis between algal biom-ass and water quality parameters, we got low correlation coefficients. Also we got low correlation coefficients between chlorophyll-a and algal biomass. Between chlorophyll-a and water quality parameters, we got high correlation coefficients. An approach having attention to cell biovolume rather than cell number is made to understand the algal community and the ecosystem of reservoir.

대구지역 인공저수지 조류군집의 계절적 천이와 수질을 조사하여 상호관련성을 알아보고자 하였다. 조류의 계절적 천이는 규조류$\longrightarrow$녹조류$\longrightarrow$남조류$\longrightarrow$규조류$\longrightarrow$규조류$\longrightarrow$남조류$\longrightarrow$남조류$\longrightarrow$남조류의 순서다. 이러한 천이순서는 다른 지역에서의 경향과는 다른 두 저수지의 특징적인 현상으로 국지적 환경조건에 의해 조류의 천이가 영향을 받는 것 같다. 2001년은 여름철 발생한 남조류가 저수온시기까지 남아있는 것으로 보아 저수지의 영양상태가 갈수록 악화되는 것으로 판단된다 조류현존량과 수질항목과의 상관분석에서는 대부분의 경우 상관계수가 낮게 나타났다. Chlorophyll-a는 수질항목과의 상관분석에서는 상관계수가 높게 나타났지만, 조류 현존량과의 상관계수는 낮게 나타난점은 조류현존량은 세포수만 나타낼뿐 조류종이나 영양상태에 따른 세포체적이 차이가 있음을 고려하지 않음도 원인이 될것으로 사료됨으로 세포수와 세포체적을 고려한 조류의 군집구조를 파악하는 방식으로의 접근이 요구된다.

Keywords

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