한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제27권2호
  • /
  • Pages.230-240
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  • 2013
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
권호 표지

홍천강의 서식처 유형별 어류상과 피라미 개체군의 특징

The Characteristics of Fish Fauna by Habitat Type and Population of Zacco platypus in the Hongcheon River

  • 투고 : 2013.01.29
  • 심사 : 2013.03.08
  • 발행 : 2013.04.30
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초록

2008년 8월부터 2009년 6월까지 홍천강의 8개 미소서식처 유형에 따른 어류상과 피라미 개체군의 특징을 조사하였다. 조사기간 동안 채집된 어류는 총 6과 21종 1,033개체가 확인되었다. 출현한 어종 중 한국고유종은 Acheilognathus signifer, Microphysogobio longidorsalis, Pseudopungtungia tenuicorpa, Squalidus gracilis majimae, Zacco koreanus, Iksookimia koreensis, Silurus microdorsalis, Liobagrus andersoni, Coreoperca herzi, Odontobuitis interrupta, O. platycephala 등 총 13종(61.9%)으로 확인되었으며, 우점종은 Z. koreanus, 아우점종은 Z. platypus로 조사되었다. 서식처 유형별 우점종은 샛강, 낙차형 웅덩이, 급여울에서 Z. platypus, 개방형 하도습지, 평여울, 사행형 웅덩이, 거석형 웅덩이에서 Z. koreanus, 댐형 웅덩이에서 Microphysogobio yaluensis, 폐쇄형 하도습지에서 Rhynchocypris oxycephalus가 우점하였다. Z. platypus의 전장-체중 상관도의 회귀계수 b값이 3.27의 값으로 나타났고, 주성분 분석 결과 홍천강은 크게 2개의 그룹으로 구분되었다. 홍천강의 서식처 유형별 유사도 분석 결과 개방형 하도습지와 사행형 웅덩이가 66.2%로 가장 유사한 것으로 나타났으며, 샛강과 폐쇄형 하도습지가 32.1%로 가장 대조적으로 분석되었다.

The fish fauna and population characteristics of Zacco platypus at the 9 habitat types in the Hongcheon River were investigated from August, 2009 to April, 2010. The collected species during the surveyed period were 21 species belong to 6 families. Korea endemic species were Acheilognathus signifer, Microphysogobio longidorsalis, Pseudopungtungia tenuicorpa, Squalidus gracilis majimae, Zacco koreanus, Iksookimia koreensis, Silurus microdorsalis, Liobagrus andersoni, Coreoperca herzi, Odontobuitis interrupta, and Odontobuitis platycephala which showed 61.9% ratio of total species. Dominant species was Z. koreanus, and subdominant species was Z. platypus. Dominant species according to habitat types were Z. platypus(in side channel, substrate type pool, and riffle), Z. koreanus(channel connected pool, run, meander type pool, and rock type pool), M. yaluensis( dam type pool ) and Rhynchocypris oxycephalus(channel unconnected pool). Length-weight relationship in the population of Z. platypus was 3.27 in regression coefficient(b). Principal component analysis was classified as 2 groups. Bray-curtis cluster analysis indicated that the channel connected pool and meander type pool showed the most similar values(66.2%), whereas side channel and channel unconnected pool exhibited the most distance values(32.1%).

키워드

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