Daily Samples Revealing Shift in Phytoplankton Community and Its Environmental Drivers during Summer in Qinhuangdao Coastal Area, China

Rapid urbanization and economic development in coastal regions have significantly increased nutrient pollution remarkably changed the phytoplankton community developed some species into bloom, resulting large losses serious threats to public health. Therefore, it is indispensable reveal shift abundance, phytoplankton’s environmental drivers. However, previous studies could not present details of drivers due samples being collected with low temporal resolution. Here, high-temporal-resolution (daily) were investigate influence factors on Qinhuangdao for 44 days. Phytoplankton communities showed a rapid succession, predominant genera changing order Skeletonema–Chaetoceros–Skeletonema–Thalassiosira. Similarly, Thalassiosira pacifica, Skeletonema costatum, Chaetoceros tortissimus, Chattonella marina identified as dominant abundant 0–1.27 × 107 cells·L−1, 0–9.34 106 0–6.49 0–3.64 respectively. Moreover, inflows facilitate succession community. Dissolved inorganic phosphorus (DIP) was found bloom top three species, i.e., tortissimus. Overall, our results provide observations its This contributes current understanding occurrence algae blooms supports management strategies control waters.