Vulnerability assessment on the mangrove ecosystems in qinzhou bay under sea level rise Phytoplankton community structure based on pigment composition in Qinzhou bay during average water period Annual changes of phytoplankton’s ecological features in Qinzhou Bay of South China. Phytoplankton community structure in Qinzhou Bay during flood season by analysis of HPLC photosynthetic pigment signatures Variation of organic pollution in the last twenty years in the Qinzhou bay and its potential ecological impacts