To assess the impact of typhoons (tropical storms) on microbial community, we conducted a metagenomics approach to understand the change in microbial community composition and genomes. In addition, we also want to examine whether our result would support a hypothesis that cyanobacterial bloom after typhoon is relevant to phosphate releasing. Phosphate is limited in Fei-Tsui water reservoir and typhoons are a kind of climate activity that can increase inorganic phosphate concentration in the water. As phosphate is important for growth of microbes. It would be also interesting to inspect how hetertrophic bacteria would compete for uptaking phosphate from cyanobacteria.