Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Distribution of Fish and Amphibian in Rice Fields Near the Yedang Reservoir in Korea

충남 예산군 예당저수지 수변 농경지의 어류와 양서류 분포특성

  • Kim, Su-kyung (Eco institute for Oriental Stork, Korea National University of Education) ;
  • Park, Hyun-Sook (Department of Biology Education, Korea National University of Education) ;
  • Park, Shi-Ryong (Eco institute for Oriental Stork, Korea National University of Education)
  • 김수경 (한국교원대학교 황새생태연구원) ;
  • 박현숙 (한국교원대학교 생물교육학과) ;
  • 박시룡 (한국교원대학교 황새생태연구원)
  • Received : 2015.11.18
  • Accepted : 2015.12.19
  • Published : 2016.02.29
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Abstract

The distribution of fish (Cobitidae and Cyprinidae) and amphibians together with related environmental factors were surveyed at 30 randomly selected rice-fields (15 flooded unmanaged rice fields (FUR) and 15 unflooded managed rice fields (UMR)) near the Yedang reservoir in Korea, eight times from May to August in 2012. The total number of species captured from the entire survey area was 13 species with 8 families of fish and 5 species of amphibians. The number of species of Cyprinidae fish captured in FUR was higher than that in UMR. Upon the comparative analysis on the distribution of fish and amphibians in FUR and UMR, it was found that the number of Cyprinidae fish captured in FUR was significantly higher than that in UMR while the number of Cobitidae fish captured in UMR was higher than that in FUR. According to the analysis on the environmental factors that affect the distribution of fish, Cyprinidae fish tend to appear in rice-fields, that were flooded in winter, near the Yedang reservoir while Cobitidae fish tend to appear in rice fields that draws its water supply from forest reservoir and have a good water drainage system. In case of amphibians, the number of tadpoles captured in UMR was higher than that in FUR. Rana catesbeiana was dominant in FUR and Rana nigromaculata was dominant in UMR. Upon the analysis on the environmental factors that affect the distribution of tadpoles, it was found that Rana catesbeiana tadpoles tend to appear in rice fields, that were flooded in winter, near Yedang reservoir while Rana nigromaculata tadpoles tend to appear near mountains and far from the Yedang reservoir.

예당저수지의 수변 농경지의 어류와 양서류 분포 특성을 파악하고자 실시되었다. 이를 위해 비수변 농경지를 대조군 지역으로 설정하고 수변 농경지의 어류와 양서류의 개체수 및 생물량 비교, 어류와 양서류 분포에 영향을 주는 환경요소 분석, 시기별 개체수 변동 특성을 연구하였다. 전체 조사 대상지역에서 포획된 어류종수는 8과 13종이며, 양서류 종수는 5종이었다. 수변 농경지에서는 미꾸리과 어류, 붕어, 잉어 등의 13종의 어종이 포획되었고, 비수변 농경지에서는 미꾸리과 어류, 붕어 등의 3종의 어종이 포획되었다. 양서류는 황소개구리, 참개구리, 청개구리, 한국산개구리, 옴개구리 총 5종의 유생이 포획되었는데, 비수변 농경지에서는 5종의 양서류 유생이 포획되었고, 수변 농경지에서는 2종의 양서류 유생이 포획되었다. 수변 농경지와 비수변 농경지의 어류와 양서류 분포 특성을 분석한 결과, 수변 농경지에는 잉어과 어류가 많이 포획되었으며, 비수변 농경지에는 미꾸리과 어류가 많이 포획되었다. 어류의 분포에 영향을 주는 환경요소 분석결과, 잉어과 어류는 겨울철에 담수되고, 예당저수지와의 거리가 가까운 농경지에서 주로 출현할 가능성이 높으며, 미꾸리과 어류는 산간 저수지로부터 용수가 공급되고, 논과 배수로가 잘 연결되어 있는 농경지를 선호하는 것으로 나타났다. 양서류의 경우, 비수변 농경지에서 수변 농경지보다 양서류의 유생이 많이 포획되었다. 수변 농경지에서는 황소개구리가 우점하였고, 비수변 농경지에서는 참개구리가 우점하였다. 황소개구리 유생의 분포에 영향을 주는 주요 환경요소는 겨울철에 담수되고 예당저수지에 가까운 농경지에서 출현할 가능성이 높았고, 참개구리의 경우는 산까지의 거리가 가깝고 예당저수지까지의 거리가 멀수록 출현할 가능성이 높았다.

Keywords

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