| Title |
The Water Quality Assessment based on the Algal Communities and Biotic Indices in Hongcheon river, Gangwon-do |
| Authors |
백준수 ( Jun Soo Baek ) ; 김헌년 ( Hun Nyun Kim ) ; 이옥민 ( Ok Min Lee ) |
| DOI |
https://doi.org/10.15681/KSWE.2014.30.6.596 |
| Keywords |
DAIpo; epilithic diatom; Phytoplankton; P-IBI; TDI; TSI |
| Abstract |
This research has studied the physicochemical environmental factors and communities of epilithic diatom and phytoplanktons at Hongcheon river from December 2011 to September 2012. In case of TN, the result was hypertrophic, and for TP, it ranged from mesotrophic to eutrophic. As for BOD, Hongcheon river was rated level II or better, according to the water quality level; values were found to be below 3mg/L at most sites. Total of 83 and 114 taxa of epilithic diatom and phytoplanktons respectively, were found during the research. When assessed using the TSI, it ranged from oligomesotrophic to eutrophic. In case of DAIpo, it ranged from 64.1 to 99.5, and TDI ranged from 51.5 to74.0. These results signify good water quality, level B or better, for Hongcheon river. P-IBI was rated moderate to low, which showed higher pollution than other indices. Among the biological water quality measures analyzed in the Hongcheon river study, DAIpo best matches TDI and BOD, while TDI showed greater pollution. Therefore, P-IBI appears to be inappropriate when assessing the domestic small rivers and lakes. |