Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Zooplankton and Phytoplankton in the Hyuncheon Wetland, Gangwon-do, Korea

강원도 현천리 습지의 동식물플랑크톤

  • Kim, Saywa (Department of Life Science, College of Environmental Sciences, Yong In University)
  • 김세화 (용인대학교 환경과학대학 생명과학과)
  • Received : 2014.08.19
  • Accepted : 2014.10.07
  • Published : 2014.12.31
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Abstract

A Study on zooplankton fauna and phytoplankton flora was carried out three times in June, August and September 2012 at the Hyuncheon wetland in Gangwon-do, Korea. A total of 14 taxa of zooplankton were distributed, which consisted of six rotifers, four cladocerans, two copepods, one nematode and one aquatic insect larvae. Occurrence of Simulium japonicum supports that studied water is the first grade clear water. It was observed that the abundance of zooplankton was never exceeded over $55ind.L^{-1}$. Rotifers dominated in the months of June and August, whereas cladocerans in September, respectively. The phytoplankton flora was consisted of 26 species. The standing crops varied between $4,080{\sim}10,120cell.L^{-1}$. Docidium undulatum is the typical species distributed in muddy wetland and Closterium acerosum is distributed widely from wetlands through lakes. Navicula spp. and Nitzchia spp. were recorded to be distributed in lentic waters of big lakes such as Paldang Lake. Species diversity indices decreased gradually from June to September between 1.3~1.9 in zooplankton but lowest in August between 0.9~1.6 in phytoplankton, respectively. Based on my study observation, I anticipate that the poor distribution of zooplankton, phytoplankton, and low values of species diversity index are likely to be a cause of narrow area with shallowness of waters during the short period.

2012년 전국 내륙습지 생태계 조사의 일환으로 강원도 현천리 습지에서 6, 8, 9월 매달 3회에 걸쳐 동식물플랑크톤을 채집하여 분석하였다. 동물플랑크톤은 윤충류 6종, 지각류 4종, 요각류 2종류, 선충류 1종과 수서곤충 유생 1종 등 총 14분류군이 출현하였으며 출현량은 6월에 $55ind.L^{-1}$를 기록한 후 점점 감소하였다. 윤충류는 0.1 mm 전후의 소형종들이 출현하였고 지각류는 산간계곡 서식종이 주로 출현하였으며 요각류 성체는 출현하지 않았고 유생만 관찰되었다. 또한 하계에 출현한 줄무늬먹파리의 출현은 현천리 습지가 1급수 지역임을 시사하고 있다. 식물플랑크톤은 총 26분류군이 출현하였으며 8월에 $10,120cell.L^{-1}$의 최대현존량을 기록하였고 9월에 최소현존량 ($4,080cell.L^{-1}$)를 기록하였다. Docidium undulatum과 같은 진흙 습지 서식 종, Closterium acerosum은 고원 습지부터 평지의 연못까지 폭넓게 분포하는 종, Navicula 및 Nitzchia 속의 종들과 같이 팔당호와 같은 평지의 커다란 호수에서도 많이 출현하는 종들이 함께 출현했다. 전반적으로 동식물플랑크톤의 출현량과 현존량이 낮아 현천리 습지에서 동식물플랑크톤의 생산량이 차지하는 비중은 일반적인 평지의 담수계에 비하여 낮을 것으로 생각된다. 동물플랑크톤의 종다양성 지수는 6월에 가장 높고 서서히 감소하였고 식물플랑크톤은 8월에 감소하였다 9월에 다시 증가하였으나 짧은 조사 기간으로 인하여 특이한 경향을 볼 수 없었다.

Keywords

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