Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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The Characteristic of Fish Fauna by Habitat Type and Population of Zacco platypus in the Tan Stream

탄천의 서식처별 어류상과 피라미 개체군의 특징

  • Received : 2010.12.07
  • Accepted : 2011.02.09
  • Published : 2011.02.28
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Abstract

The fish fauna and characteristics of population of Zacco platypus in the 9 microhabitat at the Tan Stream was investigated from August, 2009 to April, 2010. The collected species during the survey period were 17 species belong to 7 families. Korea endemic species were Hemiculter eigenmanni and Odontobutis interrupta, which showed a ration of 11.8% in collected species. Dominant species was Z. platypus and subdominant species was Carassius auratus. Dominated species of C. auratus was at the dam-type pool, Meander-type pool, run, and rock-type pool, Pseudogobio esocinus was side channel, Rhinogobius brunneus was riffle, and Z. platypus was channel connected pool, substrate-type pool and channel unconnected pool. Length-weight relationship in the population of Z. platypus was 3.29. PCA analysis was in to the 3 groups identified. Bary-curtis cluster analysis indicated that the substrate-type pool and channel unconnected pool 65.9% showed the most similar, riffle, and dam-type 30.4% were identified as the most contrast.

2009년 8월부터 2010년 4월까지 탄천 9개 미소서식지에서 어류상과 피라미 개체군의 특성을 조사하였다. 조사 기간동안 채집된 어류는 총 7과 17종개체가 확인되었다. 출현한 어종 중 한국고유종은 Hemiculter eigenmanni와 Odontobutis interrupta로 2종(11.8%)이었으며 국외도입종은 Microterus salmoides 1종 이었다. 우점종으로는 Zacco platypus, 아우점종으로는 Carassius auratus 이었다. 서식처별로는 댐형 웅덩이, 사행형 웅덩이, 평여울, 거석형 웅덩이 등에서 Carassius auratus가 우점하였고, Pseudogobio esocinus는 샛강, Rhinogobius brunneus는 급여울, Z. platypus 는 개방형 하도습지, 낙차형 웅덩이, 폐쇄형 웅덩이 등에서 우점하였다. Z. platypus의 성장도와 비만도의 회귀계수 b값이 3.29의 값으로 나타났고 PCA 분석 결과 탄천에서 크게 3개의 Group으로 나누어졌다. 탄천의 서식처 별 Bray-Curtis Cluster 분석을 실시한 결과 낙차형 웅덩이와 폐쇄형 하도습지가 65.9%로 가장 유사한 것으로 나타났으며, 30.4%로 댐형 웅덩이와 급여울이 가장 대조적인 것으로 확인되었다.

Keywords

Acknowledgement

Supported by : 한국기술연구원(KITC)

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