Speaker Prof. Renhui LI Director of Algal Research Center, Institute of Hydrobiology the Chinese Academy of Sciences Associate editors for both "Phycologia" and "Journal of Systematics and Evolution" Abstract Environmental problems caused by cyanobacterial blooms in eutrophic lakes, rivers and drinking water reservoirs have been increasingly documented. Toxins and Odor substances produced by cyanobacterial blooms, directly threading to human health through drinking water systems, have been attracted more attention and extensively studied. In the past decades, the cyanobacterial blooms mainly dominated by Microcystis spp. have been frequently found in large shallow lakes from the southern China. This presentation will focus on diversity studies by the polyphasic approach including morphological and phylogenetic analyses in several major groups of water bloom forming cyanobacteria of ...