| Title |
Formation of Phytoplankton Community and Occurrences of Odorous Compounds for Sediment Incubation by Water Temperature |
| Authors |
김용진 ( Yongjin Kim ) ; 윤석제 ( Seokjea Youn ) ; 김헌년 ( Hunnyun Kim ) ; 황문영 ( Moonyoung Hwang ) ; 박진락 ( Jinrak Park ) ; 이병천 ( Byoungcheun Lee ) ; 이재관 ( Jaekwan Lee ) |
| DOI |
https://doi.org/10.15681/KSWE.2015.31.5.460 |
| Keywords |
2-MIB; Benthic cyanobacteria; Geosmin; Phytoplankton; Sediment |
| Abstract |
We analyzed the formation of phytoplankton community and the occurences of odorus compound from benthic cyanobacteria in North, South Han-River, Paldang-Lake and Kyeongan-Stream sediments. Sediments were incubated in different water temperature. Akinetes were found (0~500 cells/g) with the highest number on sediment in Yangsoo railroad bridge (YC). The result showed that Anabaena ranged between 0.02~0.53×103 cells/mL in Sambong (SB), YC, Mukhyen-Stream (MS), Paldang-Lake (P2) and Kyeongan-Stream (KK). The total 68 taxa of phytoplankton were observed during the incubation period. A standing crop of phytoplankton was in the range of 0.13~8.97×103 cells/mL and Microcystis appeared in SB, YC, P2 and KK sites with 20~25°C temperature. In South Han-River (P3), Oscillatoria tenuis was dominant at 25°C temperature. The concentration of geosmin was the highest in SB-15°C (25.5 ng/L), and the concentration of 2-MIB was the highest in P3-25°C (286.8 ng/L). Odorous compounds were detected in all the temperature conditions from each site. Our results indicate that the dominant benthic cyanobacteria (O. tenuis, O. limosa, Phormidium tenue and Pseudanabaena limnetica) have high correlation with the occurrence odorous compounds and 2-MIB. |