Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characteristics of Algal Abundance and Statistical Analysis of Environmental Factors in Lake Paldang

팔당호 조류발생 특성 및 수질환경인자의 통계적 분석

  • Park, Hae-Kyung (Han river Environmental Research Laboratory, National Institute of Environment Research) ;
  • Lee, Hyun-Ju (Han river Environmental Research Laboratory, National Institute of Environment Research) ;
  • Kim, Eun-Kyung (Watershed Management Research Center, National Institute of Environment Research) ;
  • Jung, Dong-Il (Han river Environmental Research Laboratory, National Institute of Environment Research)
  • 박혜경 (국립환경과학원 한강물환경연구소) ;
  • 이현주 (국립환경과학원 한강물환경연구소) ;
  • 김은경 (국립환경과학원 수질총량관리센터) ;
  • 정동일 (국립환경과학원 한강물환경연구소)
  • Received : 2005.05.31
  • Accepted : 2005.07.08
  • Published : 2005.11.30
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Abstract

The spatio-temporal abundance pattern of algae in Lake Paldang from 2002 to 2004 was investigated. The concentration of chlorophyll a representing algal biomass had fluctuated intensively throughout the year. Among three years, the highest algal biomass was shown in 2002, and typical growth peak of concentration of chlorophyll a was occurred in spring and autumn. There had been frequent rainfall in spring drought period in 2003 and it resulted in the decrease of the algal biomass. The distribution pattern of four algal groups on the surface water of Lake Paldang showed different abundance by season and by water area. In particular, different algal growth characteristics by water areas were observed. Influences of various environmental parameters on algal abundance in four water areas of Lake Paldang were analyzed statistically. From the results of Peason correlation analysis, it was understood that the kinds and affects of environmental parameters were different according to water areas and seasons. Based on the factors analysis of environmental parameters on the concentration of chlorophyll a, stepwise regression models whose independent variables were the factors produced by factor analysis and dependent variable was the concentration of chlorophyll a were derived by water areas and seasons. As a whole, factors related with organics and photosynthesis were revealed to have high affects to algal abundance, whereas limiting nutrients such as phosphorus and nitrogen showed little affect in Lake Paldang.

Keywords

References

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