Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Health Assessment of Aquatic Ecosystem for Wonju Stream Using the Composition of Aquatic Insects

수서곤충을 이용한 원주천 수서생태계 건강도 평가

  • Published : 2008.10.31
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Abstract

This study conducted a survey on the ecosystem of Wonju stream from May until November in 2004 and made an health assessment of Wonju stream using family biotic indices(FBI) and physical habitat assessment(PHA) of the aquatic insects. Through this survey, aquatic insects covering 8 orders, 37 families, 62 genuses, and 92 species were observed at 9 stations along Wonju stream. In terms of family biotic indices, it was confirmed that station 1,2 and 3 were maintaining the healthiest stream ecosystem with the value ranging from 4.55 to 4.82. In addition, station 2 was found to have the best habitat environment in the correlation between physical habitat assessment and family biotic indices with its value of 100 and 4.82, respectively. However, station 7 and 9 showed the lowest habitat environment with the value of 45, 6.17 and 45, 6.97, respectively. posing the need for improvement in PHA; further, station 7 and 9 showed inverted correlationship between PHA and FBI.

본 연구는 2004년 5월부터 2004년 11월까지 총 4회 조사를 실시하였으며, 수서곤충은 과별 생물지수(FBI)와 물리적 서식환경(PHA)을 이용하여 원주천의 건강도를 평가하였다. 원주천 9개 지점을 통해 출현한 수서곤충은 총 8목 37과 62속 92종이었다. 과별생물지수의 경우 지점 1, 2, 3에서 $4.55{\sim}4.82$로 가장 건강한 하천생태계를 유지하고 있는 것으로 확인되었다. 물리적 서식환경과 과별생물지수 간의 상관관계는 지점 2가 각각 100, 4.82의 값으로 가장 좋은 서식환경을 나타내었다. 그러나 지점 7과 9는 45, 6.17과 6.97로 가장 낮은 서식환경을 나타내어 물리적 서식환경의 개선이 필요한 것으로 나타났다. 또한 물리적 서식환경과 과별생물지수는 서로 역의 상관성을 나타내었다.

Keywords

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