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Changes of Zooplankton Community in an Artificial Vegetation Island of Lake Paldang (팔당호에서 인공 수초재배섬 설치에 따른 동물플랑크톤 군집 변화)

  • You, Kyung-A;Park, Hae-Kyung;Byeon, Myeong-Seop;Jeon, Nam-Hui;Choi, Myung-Jae;Yun, Seok-Hwan;Kong, Dong-Soo
    • Journal of Korean Society on Water Environment
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    • v.23 no.3
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    • pp.339-347
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    • 2007

  • Zooplankton community dynamics were studied after establishment of an artificial vegetation island (AVI) in Lake Paldang, from April 2005 to November 2006. There were distinct seasonal and inter-annual changes of total zooplankton abundance at the survey site. Total zooplankton abundance rapidly increased in spring and fall, while it remained low throughout winter. During summer, the dynamics of zooplankton community seemed to be largely affected by hydrological parameters such as, precipitation and inflow. Total zooplankton abundance and biomass below AVI was much higher than that of pelagic zone (L1) in Lake Paldang. Copepoda and cladocera represented the main bulk of the zooplankton community from summer to fall at the both sites. Copepods were more dominant at AVI area, while cladocera were more dominant at pelagic zone (L1). Water quality, prey and habitat condition, species competition between zooplankton seemed to play important roles in dominance of the copepoda and cladocera in zooplankton community at AVI area. Our results conclude that artificial vegetation island provide the stable habitat and besides phytoplankton, diverse food to zooplankton, and consequently influence the diversity and richness of zooplankton community.

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