Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Comparison on Ecological Index Characteristics between Zacco platypus and Zacco koreanus by Stream order in Korea

하천차수에 따른 피라미와 참갈겨니 개체군의 생태지표 특성 비교

  • Lee, Seung-Hyun (Watershed Ecology Research Team, National Institute of Environmental Research) ;
  • Jeong, Hyun-Gi (Watershed Ecology Research Team, National Institute of Environmental Research) ;
  • Shin, Hyun-Seon (Climate Change Team, R&D Coordination Division, Rural Development of Administration) ;
  • Shin, Yuna (Watershed Ecology Research Team, National Institute of Environmental Research) ;
  • Lee, Su-Woong (Watershed Ecology Research Team, National Institute of Environmental Research) ;
  • Lee, Jae-Kwan (Water Environment Research Department, National Institute of Environmental Research)
  • 이승현 (국립환경과학원 유역생태연구팀) ;
  • 정현기 (국립환경과학원 유역생태연구팀) ;
  • 신현선 (농촌진흥청 연구정책국 기후변화팀) ;
  • 신유나 (국립환경과학원 유역생태연구팀) ;
  • 이수웅 (국립환경과학원 유역생태연구팀) ;
  • 이재관 (국립환경과학원 물환경연구부)
  • Received : 2017.10.30
  • Accepted : 2017.12.18
  • Published : 2017.12.31
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Abstract

We collected fishes at the 12,873 sites in stream order (1~7) from 2008 to 2016. In the results, two populations(Zacco platypus and Zacco koreanus) represented distributional differences in the stream order gradient, and correlation analysis showed that the two populations had a potential competitive relationship. The ecological characteristics of the fish except for the Z. platypus and the Z. koreanus, according to the gradient of stream order showed a pronounced gradient in the species such as intermediate species, sensitive species, carnivores, herbivores and omnivores. The two populations showed a high correlation between intermediate species, sensitive species of the tolerance guild and omnivores, insectivores of the trophic guild. Fish assessment index (FAI) was negative relation with stream order. According to the stream order gradient, the two populations showed different correlations with FAI.

본 연구는 2008년부터 2016년까지 1차부터 7차까지 총 12,873지점을 대상으로 하천차수별 어류분포를 조사하였다. 하천차수에 따른 피라미와 참갈겨니 개체군의 분포 양상에서 차이를 보였으며, 상관관계 분석 결과 두 개체군간 잠재적인 경쟁관계 가능성을 확인하였다. 두 개체군과 다른 공서 어류의 생태특성은 하천차수의 구배에 따라 중간종, 민감종, 내성종, 육식종, 초식종, 잡식종 등 뚜렷한 구배가 나타나는 반면, 충식종의 경우 뚜렷한 구배가 나타나지 않았다. 어류의 생태특성에 따르면, 피라미의 경우 중간종이면서 잡식종, 참갈겨니의 경우 민감종이면서 충식종으로 구분이 되는데, 두 개체군은 내성도 길드의 중간종과 민감종, 섭식 특성 길드의 잡식종과 충식종에서 유사한 상관관계의 변화를 보였지만, 두 개체군은 생태특성에 따른 각 기능군과 서로 다른 상관성의 차이를 보였다. 어류평가지수는 하천차수의 증가에 따라 감소하는 경향을 보였으며, 상관관계 분석 결과 두 개체군은 하천차수별 상관성의 차이를 보였지만, 1차에서 4차까지 유사한 상관관계의 변화를 보였으며, 5차부터 7차까지 차이를 보였다.

Keywords

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