한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제26권6호
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  • Pages.884-891
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  • 2012
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
권호 표지

남한강 수계 양화천의 서식처 유형별 어류상 및 분포특성

The Characteristic of Fish Fauna and Distribution by Habitat Type in the Yanghwa Stream of the Namhan River Basins

  • 투고 : 2012.10.05
  • 심사 : 2012.11.12
  • 발행 : 2012.12.31
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초록

2008년 8월부터 2009년 6월까지 양화천의 8개 미소서식처 유형에 따른 어류상 및 군집의 분포특성을 조사하였으며, 조사기간 동안 채집된 어류는 총 8과 30종 2,797개체가 확인되었다. 출현한 어종 중 한국고유종은 Rhodeus uyekii 등 총 10종(33.3%)으로 확인 되었으며, 우점종은 Rhodeus notatus, 아우점종은 Pseudorasbora parva였다. 서식처 유형별 우점종은 댐형 웅덩이, 개방형 하도습지에서 Pseudorasbora parva, 평여울에서 Pseudogobio esocinus, 급여울에서 Zacco platypus, 샛강, 낙차형 웅덩이에서 Rhodeus notatus, 사행형 웅덩이에서 Squalidus gracilis majimae, 폐쇄형 하도습지에서 Carassius auratus가 우점하였다. 군집분석 결과 우점도지수는 낮고, 다양도지수, 균등도지수, 풍부도지수는 높게 나타나 서식처 유형별 비교적 안정적인 군집구조를 유지하고 있는 것으로 분석되었다. 유사도 분석과 주성분 분석 결과 8개의 서식처 유형들이 유수역 특성이 나타나는 서식처와 정수역 특성이 나타나는 서식처로 구분되어 분석되었다.

The characteristic of fish fauna and distribution by habitat type in the Yanghwa stream were investigated from August, 2008 to June, 2009. During the surveyed period, 30 species belonging 8 families were collected. And there were 10 Korea endemic species(33.3%), including Rhodeus uyekii et and so on. Dominant species was Rhodeus notatus, and subdominant species was Pseudorasbora parva. Dominant species according to habitat type was Pseudorasbora parva in Dam type pool and Channel conected pool, Pseudogobio esocinus(Run), Zacco platypus(Riffle), Rhodeus notatus(Side channel and Substrate type pool), Squalidus gracilis majimae(Meander type pool), and Carassius auratus(Channel unconnected pool), respectively. As a results of community analysis in the Yanghwa Stream, diversity, richness, and abundance indices showed relatively high values, indicating that studied stream have relatively stable community structure. Moreover, cluster and principal component analysis were divided by two groups(lotic and lentic habitats), suggest that species and individuals were different among habitat types.

키워드

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