Seasonal Succession of Planktonic Ciliate in Kyungan Stream of Lake Paldang, Korea

팔당호 유입부 경안천의 섬모충 플랑크톤 계절적 분포

  • Moon, Eun-Young (Total Water Pollution Load Research Division, National Institute of Environmental Research, Environmental Research Complex) ;
  • Kim, Young-Ok (Korea Ocean Research & Development Institute/South Sea Research Institute) ;
  • Kong, Dong-Soo (Han River Environment Research Laboratory, National Institute of Environmental Research) ;
  • Han, Myung-Soo (Department of Life Science, Hanyang University)
  • Published : 2008.03.31

Abstract

Seasonal succession and community composition of planktonic ciliates were studied in Kyungan Stream from December 2000 to December 2001. Oligotrichs accounted for 53% of total ciliates. Total abundance of ciliates peaked in spring (30 March, 6 April) and in summer (8 June, 20 July) reaching values up to $1.9\times10^4$ cells $L^{-1}$. Seasonal succession of dominant species occurred obviously. Large-sized $(>50{\mu}m)$ species (Stylonychia sp1, Phascolodon vorticella and Codonella cratera) dominanted from winter to spring. Small sized $(<30{\mu}m)$ species (Vorticella spp., Rimostrombidium hyalinum and Halteria grandinella) dominanted in summer and autumn. Total abundance of large-sized species coincided with the Chl-${\alpha}$ concencetation during the study (r=0.33, p<0.05, n=39). Among the small-sized species Halteria grandinella was a significant relationship with bacterial abundance (r=0.35, p<0.05, n=39).

국내산 담수 섬모충 플랑크톤의 종조성과 계절적 변화를 조사하기 위하여 2000년 12월 15일부터 2001년 12월 6일까지 팔당호에서 표층수를 채집하였다. 출현한 분류군 중 소모류(Oligotrichs)가 53%로 출현 양이 가장 많았다. 상대적으로 높은 개체수를 보인 봄인 3월 30일($1.9\times10^4$ cells $L^{-1}$)과 4월 6일($1.85\times10^4$ cells $L^{-1}$),여름인 6월 8일($1.7\times10^4$ cells $L^{-1}$)과 7월 20일($1.9\times10^4$ cells $L^{-1}$)에 급증하였다. 우점적으로 출현한 종들은 뚜렷한 계절성을 나타내어 겨울과 봄인 저수온기에는 세포크기가 비교적 큰$(>50{\mu}m)$ Stylonychia sp1, Phascolodon vorticella, Codonella cratera가 출현하였으며 여름과 가을인 고수온기에는 세포크기가 작은$(<30{\mu}m)$ Vorticella spp., Rimostrombidium hyalinum, Halteria grandinella가 출현하였다. 세포크기가 큰 종들은 Chl-${\alpha}$와 상관성을(r=0.33, p<0.05, n=39) 나타낸 반면, 소형종인 Halteria grandinella는 bacteria와 상관성을(r=0.35, p<0.05, n=39) 나타내었다.

Keywords

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