Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Distribution of Benthic Algae in Tidal Flats of Saemangeum Lake, Korea

새만금호 갯벌의 부착조류 분포

  • Na, Jeong-Eun (Department of Biological Science, Chonnam National University) ;
  • Lee, Hak-Young (Department of Biological Science, Chonnam National University)
  • 나정은 (전남대학교 자연과학대학 생물학과) ;
  • 이학영 (전남대학교 자연과학대학 생물학과)
  • Received : 2010.12.15
  • Accepted : 2011.01.20
  • Published : 2011.02.28
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Abstract

Distributional patterns of benthic microalgae were studied in the tidal flats of Saemangeum lake, Korea, from March 2007 to October 2009. As benthic microalgae of tidal flats of Saemangeum lake, 44 species belong to 5 classes were identified. Diatoms predominated the benthic microalgal flora with 75.0% of total species occurred. Dominant species were Achnanthes lanceolata, Aulacoseira granulata, Cymbella tumida, Fragilaria construens var. ventor, Melosira varians, Navicula cryptocephala, Navicula cryptocephala var. veneta, Nitzschia palea, and Paralia sulcata. The cell density and biomass of benthic microalgae were highest in 2009, and clear tendency of increment was observed at D1 and D2 sites. In vertical profiles, cell density and biomass of the benthic microalgae showed maximum cells and biomass at 0~1 mm depth of sediments from all sampled sites.

새만금호의 염습지에 위치한 갯벌 5 지점에서 동정된 부착조류는 5강의 44종이었으며 규조류가 33종으로 가장 다양한 조성을 나타냈다. 2007년 이후 연도별 출현종수에서는 전체적으로 큰 차이가 없는 것으로 나타났다. 출현종 수가 가장 크게 변동한 곳은 D1 지점으로 2009년에는 전년에 비해 2배 이상의 종이 출현하였다. 부착조류 개체수는 대부분 규조류에 의한 것이었다. 세포수와 생물량은 2009년에 가장 높았으며, D1과 D2 지점에 서는 큰 증가를 나타냈다. 부착조류의 개체군 밀도와 생물량은 갯벌의 표층에서 가장 높았다. 개체군 밀도는 2월의 만경 1 지점 0~1mm 깊이에서 2,011 cells $cm_2$로 가장 높았다. 생물량은 D2지점의 0~1mm 깊이에서 $1.35{\times}10^3{\mu}m^3\;cm^{-2}$로 가장 높게 나타났다.

Keywords

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