Abstract


DYNAMICS OF MICROCYSTIN CONCENTRATIONS IN DRINKING WATER INTAKES OF LAKE TAIHU, CHINA

Lake Taihu, the third largest freshwater lake in China, is suffering from serious toxic cyanobacterial blooms. The associated drinking water sources serve for millions of citizens in the lake were under the risk of microcystin contamination. In this study, the water samples for DNA, microcystin, and related environmental parameters were collected monthly from eight intakes of drinking water plants of Wuxi and Suzhou in one year. The dynamics of toxic cyanobacteria and microcystin concentrations are measured to evaluate their effects on water quality in these water sources. The results showed that the microcystin concentrations are highly varied with time and space, and closely related to the abundance and proportion of toxic Microcystis. Meanwhile, temperature and nutrients are key environmental factors driving the dynamics of toxic cyanobacteria and microcystin in this hypereutrophic lake. This study highlight the fact that future climatic warming coupled with eutrophication have great effect on the population structure of toxic cyanobacteria and microcystin levels in freshwater. The research also benefit the risk forecasting of toxic cyanobacteria bloom and water safety in drinking water source of eutrophic lakes.

Authors

Yu, L., Taihu Field Station, NIGLAS , China, yuli514605@163.com

Zhu, G., Taihu Field Station, NIGLAS , China, gwzhu@niglas.ac.cn

Xu, H., Taihu Field Station, NIGLAS , China, hxu@niglas.ac.cn

Zhu, M., Taihu Field Station, NIGLAS , China, myzhu@niglas.ac.cn

Qin, B., Taihu Field Station, NIGLAS , China, qinbq@niglas.ac.cn

Details

Oral presentation

Session #:SS04
Date: 06/07/2016
Time: 09:15
Location: Sweeney Ballroom B

Presentation is given by student: Yes