한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제22권2호
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  • Pages.184-191
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  • 2008
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
권호 표지

탁수에 의한 금강모치(Kumgang fat minnow; Rhynchocypris kumgangensis) 개체군의 생태적 영향

Ecological Effects of Kumgang fat minnow(Rhynchocypris kumgangensis) on Turbid Water

  • Lee, Jae-Yong (Dept. of Environmental Science, Kangwon National University) ;
  • Choi, Jae-Seok (Institute of Environmental Research, Kangwon National University) ;
  • Kim, Jai-Ku (Dept. of Environmental Science, Kangwon National University) ;
  • Jang, Young-Su (Dept. of Environmental Science, Kangwon National University) ;
  • Lee, Kwang-Yeol (Dept. of Biology, Kangwon National University) ;
  • Kim, Bom-Chul (Dept. of Environmental Science, Kangwon National University)
  • 발행 : 2008.04.30
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초록

어류개체군에 대한 탁수의 영향을 파악하고자, 2004년부터 2005년까지 탁수하천(대기, 자운천)과 비탁수하천(봉산천, 계방천)에 분포하는 금강모치 개체군의 체장-체중 관계와 비만도지수의 변화를 알아보았다. 탁수하천과 비탁수하천간의 금강모치 평균전장을 비교해본 결과, 유의한 차이가 없는 것으로 나타났다. 남한강에서 체장-체중 관계에 따른 회귀계수 b값은 봉산천에서 3.21, 그리고 대기천에서 3.07로 나타났다. 이에 반하여, 북한강에 위치한 탁수하천의 회귀계수 b값은 비탁수하천의 값보다 약간 높았다. 그 값은 계방천에서 3.20, 자운천에서 3.23으로 각각 나타났다. 우리의 연구 결과는 금강모치 개체군 단계에서 만성 탁수의 영향이 적음을 보여준다.

To investigate the effect of turbid water on fish population, the length-weight relationship and its condition factor were applied to Kumgang fat minnow Rhynchocypris kumgangensis collected in turbid (the Daegi and the Jaun streams) and non-turbid stream (the Bongsan and the Gyebang streams) for a year from 2004 to 2005. The mean length of minnow between turbid water and non-turbid water streams was not significantly different. In the South River system, the regression coefficients (b) based on length-weight relationship were 3.21 in the non-turbid Bongsan stream and 3.07 in the turbid Daegi stream, respectively. On contrary, the regression slope in the turbid stream was a little higher than that of the non-turbid stream located in the Bukhan River system. The values were 3.20 in the Gyebang-stream and 3.23 in the Jaun stream, respectively. Our result suggested that chronic turbid water effect on the level of fish population has a little or no effect.

키워드

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