Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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A Study on the Benthic Macroinvertebrates and Biological Water Quality Evaluation in Nature Sabbatical Area of Unmunsan

운문산 자연휴식년제 지역 내 저서성 대형무척추동물상 및 생물학적 수질평가

  • 이종욱 (영남대학교 이과대학 생물학과) ;
  • 최진경 (국립환경과학원) ;
  • 오승호 (영남대학교 이과대학 생물학과) ;
  • 최강원 (영남대학교 이과대학 생물학과)
  • Published : 2010.02.28
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Abstract

A biological assessment of water quality was carried out in Unmunsan County Park from November 2007 to September 2008. The benthic macroinvertebrates collected from the surveyed sites were composed of 140 species, 106 genera, 61 families, 13 orders, 5 classes and 4 phyla. The dominant species in all the survey areas was Goerodes KUa of Trichoptera. The dominance index(DI) showed the highest as 0.553 at site 2 and the lowest as 0.354 at site 7. The species diversity index(H') showed the highest as 2.18 at site 7 and the lowest as 1.75 at site 2. Ecological score of benthic macroinvertebrate(ESB) showed the highest as 85 at site 4 and site 7 and the lowest as 51 at site 5. As a result, the areas 4 and 7 needed to be designated as the highest protection area, and the area 5 as the protection area. Besides, the water quality, based on the ecological indicators of benthic macroinvertebrate community, turned out to be oligosaprobic in the whole survey areas.

운문산 상류 수계의 저서성 대형무척추동물상 조사 및 생물학적 수질평가는 2007년 11월에서 2008년 9월까지 시행되었으며 조사결과 4문 5강 13목 61과 106속 140종이 조사되었다. 전 지점을 종합해 볼 때 날도래목의 네모집날도래 KUa가 우점종이며 지점별 우점도지수(DI)를 살펴보면 2지점이 0.553으로 가장 높았으며 7지점이 0.354로 가장 낮게 나타났다. 다양도지수(H')에서는 7지점이 2.18로 가장 높았으며 2지점이 1.75로 가장 낮게 나타났다. 저서성 대형무척추동물 생태점수(ESB)애서는 4지점과 7지점이 85로 가장 높게 나타나 '최우선보호수역'으로 판정되었으며 5 지점이 51 로 가장 낮게 나타나 '보호수역'으로 판정되었으며 전 지점 모두 오수생물계열에서 '변부수성'을 나타냈다.

Keywords

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