Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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The Application of Zooplankton Assemblage for the Evaluation of Aquatic Environments in Lentic Ecosystems

호소 생태계에서의 수환경 평가를 위한 동물플랑크톤 적용 연구

  • Hyun-Woo Kim (Department of Environmental Education, Sunchon National University) ;
  • Yu-Ji Heo (Department of Environmental Education, Sunchon National University) ;
  • Kyung-Lak Lee (Water Environmental Engineering Research Division, National Institute of Environmental Research)
  • 김현우 (순천대학교 환경교육과) ;
  • 허유지 (순천대학교 환경교육과) ;
  • 이경락 (국립환경과학원 물환경공학연구과)
  • Received : 2023.02.26
  • Accepted : 2023.03.12
  • Published : 2023.03.31
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Abstract

This study compares the abundance and community structure of zooplankton organisms from pelagic regions, and considers particularly the trophic levels vs. zooplankton abundances and biomass. Zooplankton samples were collected three times from May to November 2022, at 30 temperate lakes and reservoirs, which belong to four different river basins. The total zooplankton abundance, biomass and species index were showed considerable spatial variation. The spatial pattern of rotifer abundance was similar to that of total zooplankton abundance, while there were not showed similar patterns of zooplankton biomass (㎍ L-1) in lentic ecosystems. The rotifer strongly dominated the zooplankton assemblage in smaller lentic system than that of larger. A total of 130 species of zooplankton were identified (83 rotifers, 34 cladocerans and 13 copepods). The total average of zooplankton abundance and biomass were 213.7±342.3 Ind. L-1 (n=129) and 1382.8±1850.4 ㎍ L-1, respectively. Total and average of zooplankton abundance were usually dominated by the rotifers (>56.9%), while those of zooplankton biomass were dominated by the cladocerans and copepods (>73.6%) in lentic ecosystems. Considering the Trophic State Index (TSI), the factors of zooplankton abundance and biomass were included in between meso- and eutrophic states(27 lakes, 90% of all). The mean abundance and biomass of zooplankton in eutrophic systems were higher than that of meso- and hypertrophic systems. From this result, we suggest that management strategy for the lentic ecosystem water environment has to be focused more on small-sized lakes and reservoirs, in terms of zooplankton assemblages.

Keywords

Acknowledgement

본 논문은 환경부의 재원으로 국립환경과학원의 지원을 받아 수행하였습니다(Grant no. NIER-2022-04-02-109).

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