Journal of environmental and Sanitary engineering (환경위생공학)

Korean Society for Environmental Sanitary Engineers (대한환경위생공학회)
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Seasonal Changes of Zooplankton Distribution with Environmental Factors in Lake Jinyang

진양호 환경요인과 동물플랑크톤 군집 동태

  • Yoon, Jong-Su (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Jeong, Hyun-Gi (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Kwon, Young-Ho (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Shin, Chan-Ki (Nakdong River Environment Research Center National Institute of Environmental Research) ;
  • Hwang, Dong-Jin (Nakdong River Environment Research Center National Institute of Environmental Research)
  • 윤종수 (국립환경과학원 낙동강물환경연구소) ;
  • 정현기 (국립환경과학원 낙동강물환경연구소) ;
  • 권영호 (국립환경과학원 낙동강물환경연구소) ;
  • 신찬기 (국립환경과학원 낙동강물환경연구소) ;
  • 황동진 (국립환경과학원 낙동강물환경연구소)
  • Published : 2008.12.31
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Abstract

Our study indicates the zooplankton abundance with characteristics of water column and the vertical distribution in Lake Jinyang, South Korea. Seasonal changes of zooplankton community are determined by environmental parameters like water temperature, pH, dissolved oxygen, suspended solids and chlorophyll a. In lake Jinyang, this study showed that the zooplankton abundance in transition zone(St.1, St.2) was higher density than in lacustrine zone(St.3). Rotifers were dominant zooplankton and among them, Polyarthra spp., Keratella spp. and Nauplli(Copepoda) were common. But Cladoceran showed the low density. During survey period, zooplankton abundance with vertical distribution in surface layer(epilimnion) was higher than in bottom layer(hypolimninon). Zooplankton densities in Surface and middle layer showed positive relationship with water temperature and the densities in bottom layer(hypolimnion) showed positive relationship with chlorophyll a. Our assumption in spite of the short term study are supported by the facts that increase of temperature driven by climate change more maintains the thermocline duration by the summer temperature stratification. Thus the results suggest that the climate changes are an important source of changing zooplankton community feeding phytoplankton. So the zooplankton should be monitoring by the ecological management of Lake Jinyang to cope with climate changes like flood plain or drought.

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References

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