한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제23권6호
  • /
  • Pages.516-527
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  • 2009
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  • 1229-3857(pISSN)
  • /
  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
권호 표지

금강유역의 어류상과 서식지 적합도 지수 산정

Estimation of Fish Fauna and Habitat Suitability Index in the Geum River Basin

  • Hur, Jun-Wook (River Environment Team, Water Resources and Environmental Research Center, K-water Research Institute, Korea Water Resources Corporation) ;
  • Park, Jin-Woo (River Environment Team, Water Resources and Environmental Research Center, K-water Research Institute, Korea Water Resources Corporation) ;
  • Kang, Shin-Uk (River Environment Team, Water Resources and Environmental Research Center, K-water Research Institute, Korea Water Resources Corporation) ;
  • Kim, Jeong-Kon (River Environment Team, Water Resources and Environmental Research Center, K-water Research Institute, Korea Water Resources Corporation)
  • 발행 : 2009.12.31
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초록

금강수계에서 어류상과 서식지 적합도 지수(HSI: habitat suitability indexes)를 산정하기 위하여 2007년 10월부터 2009년 3월까지 23개 지점을 선정하여 어류 채집을 실시하였다. 이를 바탕으로 어류상, 상대풍부도 및 생물다양도 등을 포함한 하천의 건강성 평가를 실시하고, 우점종에 대하여 서식지 적합도 지수를 산정하였다. 모든 지점에서 채집된 어류는 총 11과 50종 6188개체였다. 한국고유종은 감돌고기(Pseudopungtungia nigra) 및 각시붕어(Rhodeus uyekii) 등 21종(42%)이 출현하였다. 출현어종중 개체수 구성비가 가장 높은 종은 피라미(Zacco platypus)로 34.3%를 차지하였고, 다음은 참갈겨니(Z. koreanus) 10.2%, 쉬리(Coreoleuciscus splendidus) 8.4% 등의 순으로 나타났다. 대부분 지점에서 우점종으로 나타난 피라미(Z. platypus)의 서식지 적합도 지수는 수심 0.1~0.9m, 유속 0~0.9m/s 및 하상재료 실트(<0.1mm)~호박돌(100.0~300.0mm)로 나타났다. 본 조사결과 금강수계 23개 지점에서 한국고유종 및 멸종위기종이 다수 출현하는 것으로 조사되어 보존 및 보호대책이 필요하다.

We assessed fish fauna and habitat suitability indexes in the Geum river basin. Field monitoring was conducted for ecological and habitat condition assessment at 23 sites from October 2007 to March 2009. The habitat suitability indexes established for dominant fish species using the monitoring data were employed to assess riverine health conditions such as composition ratio of fish species, richness and dominance indexes, bio-diversity(dominance index, diversity, evenness and richness), and water depth, velocity and substrate size. Twenty-one species(42%) including Rhodeus uyekii and Pseudopungtungia nigra were found endemic out of the 50 species in 11 families sampled during this study period. The most frequently found one was Zacco platypus(34.3%) followed by Z. koreanus(10.2%) and Coreoleuciscus splendidus(8.4%). For Z. platypus, the dominant fish species in the basin, the favored habitat conditions were estimated to be 0.1~0.9 m for water depth, 0~0.9m/s for flow velocity and silt(<0.1mm)~cobbles(100.0~300.0mm) for substrate size, respectively. Overall, it was concluded that the Geum river basin has been relatively well protected from the anthropogenic disturbance for the legally protected species including the endemic species studied in this study.

키워드

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