Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Development of Biological Criteria for Water Quality Assessment using Benthic Diatoms

부착돌말류를 이용한 생물학적 수질평가지표 개발

  • Noh, Seongyou (Water Environment Research Department, National Institute of Environmental Research) ;
  • Byeon, Myeongseop (Water Environment Research Department, National Institute of Environmental Research) ;
  • Kim, Miah (Water Environment Research Department, National Institute of Environmental Research) ;
  • Lee, Jaekwan (Nakdong River Environmental Research Center, National Institute of Environmental Research)
  • 노성유 (국립환경과학원 물환경연구부) ;
  • 변명섭 (국립환경과학원 물환경연구부) ;
  • 김미아 (국립환경과학원 물환경연구부) ;
  • 이재관 (국립환경과학원 낙동강물환경연구소)
  • Received : 2009.07.07
  • Accepted : 2009.09.17
  • Published : 2009.11.30
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Abstract

The present study was carried out to develop biological criteria for water quality assessment using benthic diatoms. Selecting of the indicator diatoms, three parameters were considered: broad distribution (180 taxa occurred over 3% at upper level), species abundance (158 taxa occurred over $1.5{\times}10^5cells/cm^2$), and sensitivity (184 taxa occurred more than once as 1st and 2nd dominant species). Overall, total 208 taxa were selected, including 38 varieties, 170 species, 34 genera, 9 families, 3 orders, and 1 phylum. The most dominant taxonomic group (family) was Naviculaceae (52%), followed by Diatomaceae (15%), Nitzschiaceae (12%) and Achnantaceae (11%). COD and TP were proposed as new water quality standards (draft) to improve the existing BOD standard and to manage and control efficiently non-biodegradable organic pollutants. With this regard, we used TP standard (draft) in developing biological water quality criteria for diatoms. TP standards (draft) proposed as Ia = 0.02 mg/L or less, Ib = 0.05 mg/L or less, II = 0.1 mg/L or less, III = 0.2 mg/L or less, IV = 0.4 mg/L or less, V = 0.6 mg/L or less and VI = above 0.6 mg/L. Biological assessment system (4 class system) was developed and proposed for diatom using modified Tropic Diatom Index (TDI). Biological assessment of TDI appear B grade (Good).

Keywords

Acknowledgement

Supported by : 국립환경과학원

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