Resting cysts play a major role in the life history of dinoflagellates. Peridiniopsis blooms have occurred many times in the Jiulongjiang River( Fujian province) since February 2009. This study investigates the characteristics of dinoflagellate cysts found in the sediments of the Xipi Reservoir in the Jiulongjiang River during different months,from 2012 to 2013. We used microscopy and single-cell Polymerase Chain Reaction( PCR) technology to identify the species of dinoflagellate cysts in a germination expe...