Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Plankton Community in Weir Section of the Nakdong River and Its Relation with Selected Environmental Factors

낙동강 보 구간의 플랑크톤 군집조성과 환경요인에 의한 영향 분석

  • Seo, Dong-Il (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Nam, Gui-Sook (Rural Research Institute, Korea Rural Community Corporation) ;
  • Lee, Sang-Hyup (Center for Water Resource Cycle Research, Korea Institute of Science and Technology) ;
  • Lee, Eui-Haeng (Rural Research Institute, Korea Rural Community Corporation) ;
  • Kim, Mirinae (Rural Research Institute, Korea Rural Community Corporation) ;
  • Choi, Jong-Yun (Department of Biology, Pusan National University) ;
  • Kim, Jeong-Hui (Department of Biology Education, Gongju National University) ;
  • Chang, Kwang-Hyeon (Department of Environmental Science and Engineering, Kyung Hee University)
  • 서동일 (경희대학교 환경학 및 환경공학과) ;
  • 남귀숙 (농어촌공사 농어촌연구원) ;
  • 이상협 (한국과학기술연구원 녹색도시기술연구소) ;
  • 이의행 (농어촌공사 농어촌연구원) ;
  • 김미리내 (농어촌공사 농어촌연구원) ;
  • 최종윤 (부산대학교 생물학과) ;
  • 김정희 (공주대학교 생물교육학과) ;
  • 장광현 (경희대학교 환경학 및 환경공학과)
  • Received : 2013.11.05
  • Accepted : 2013.11.19
  • Published : 2013.12.31
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Abstract

Phytoplankton and zooplankton communities were investigated from 8 weir sites of the Nakdong River system to provide basic information on plankton community after weir construction and to estimate its effects on major water quality parameters. The relationship between plankton community structure and environmental factors was analysed with CCA (Canonical Correspondence Analysis). The results suggested that discharge and total phosphorus and nitrogen concentrations are important factors determining the phytoplankton species composition. For zooplankton community, the difference in discharge between September and October induced different distribution pattern of zooplankton community with more homogeneous distribution with extreme dominance of rotifers during the high discharge season. Chlorophyll a concentration representing phytoplankton biomass has been suggested as the main environmental factor affecting zooplankton community followed by COD and total nitrogen concentration.

본 연구는 4대강 사업으로 건설된 낙동강 보 구간의 플랑크톤 군집에 대한 정보를 제공하고, 플랑크톤 군집에 영향을 미치는 주요 환경요인에 대한 기초적인 평가를 위해 2013년 9월과 10월에 걸쳐 낙동강 8개 보 구간에서 식물 및 동물플랑크톤 종조성과 생체량을 조사하고 수온, 유량, 총인, 총질소, 화학적산소요구량(COD) 등의 환경요인과의 상관관계를 CCA분석을 통해 평가하였다. 조사기간 중 식물플랑크톤 생체량과 종조성은 유량, 총인 및 총질소 농도에 의해 영향을 받는 것으로 나타났다. 동물플랑크톤의 경우 유량이 낮았던 9월에는 지점별 종조성이 상이하게 나타났으나 유량이 높았던 10월에는 모든 지점에서 윤충류가 우점하는 경향을 나타내었다. 동물플랑크톤 군집조성은 식물플랑크톤 생체량(클로로필 농도)과 COD 및 총질소에 의해 주로 영향을 받는 것으로 분석되었다.

Keywords

References

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