Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Analysis of Physical Environmental Factors and the Structure of Fish Community in the Gapyeong Stream

가평천의 물리적 환경요인과 어류 군집구조 분석

  • Kong, Dongsoo (Department of Life Science, Kyonggi University) ;
  • Son, Se-Hwan (Division of Basic Ecology, National Institute of Ecology) ;
  • Kim, Jin-Young (Water Environment Research Department, National Institute of Environmental Research) ;
  • Kim, Ah Reum (Department of Life Science, Kyonggi University) ;
  • Kwon, Yongju (Department of Life Science, Kyonggi University) ;
  • Kim, Jungwoo (Department of Life Science, Kyonggi University) ;
  • Kim, Ye Ji (Department of Life Science, Kyonggi University) ;
  • Min, Jeong Ki (Department of Life Science, Kyonggi University) ;
  • Kim, Piljae (Department of Life Science, Kyonggi University)
  • 공동수 (경기대학교 생명과학과) ;
  • 손세환 (국립생태원 생태기반연구실) ;
  • 김진영 (국립환경과학원 물환경연구부) ;
  • 김아름 (경기대학교 생명과학과) ;
  • 권용주 (경기대학교 생명과학과) ;
  • 김정우 (경기대학교 생명과학과) ;
  • 김예지 (경기대학교 생명과학과) ;
  • 민정기 (경기대학교 생명과학과) ;
  • 김필재 (경기대학교 생명과학과)
  • Received : 2017.05.22
  • Accepted : 2017.08.28
  • Published : 2017.09.30
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Abstract

Physical environmental factors (water depth, current velocity and substrate) and fish community were surveyed in the Gapyeong stream, Korea. The fish group of Gapyeong Stream was divided into three types. Lithophilic fish, Koreocobitis rotundicaudata and Pseudopungtungia tenuicorpa preferred shallow depth, low-velocity current, and coarse bed condition, whereas Coreoleuciscus splendidus and Microphysogobio longidorsalis were adapted to high-velocity current and bed materials. Nektonic fish, Zacco koreanus and Zacco platypus appeared in a wide range of physical conditions. Intermediate fish, Hemibarbus longirostris, Pungtungia herzi and Coreoperca herzi adapted to moderate water depths and current velocities. Among them, H. longirostris and C. herzi were adapt to various bed materials. C. splendidus, M. longidorsalis and P. herzi showed high niche overlap for current velocity, water depth and substrate with Z. koreanus and Z. platypus. The occurrence of M. longidorsalis in a relatively low-velocity current compared to Z. koreanus and Z. platypus suggests that the current velocity act as a isolation factor for these species. The competition, isolation and character displacement among these species investigated detail in the future. Based on canonical correspondence analysis, the relative importance of each environmental factor was determined as substrate > water depth > current velocity.

Keywords

References

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