Bacterial communities exhibit apparent phosphate concentration-related patterns of community composition, alpha diversity, and phylogenetic structure in the subtropical Daya Bay

Increasing anthropogenic activities have caused serious environmental problems and undesirable ecological impacts on bay ecosystems. However, much remains to be learned regarding marine bacterial community assembly its underlying mechanisms under intensive in subtropical bays. In this study, we used the theory analyze distributions Daya Bay, where habitats are subject thermal discharge excessive nutrient load. We found of Bay was dominantly shaped by factor seawater phosphate, followed temperature, silicate. High phosphate concentration significantly increased relative abundance Actinobacteria , Cyanobacteria Planctomycetes Gammaprotecteria but reduced Bacteroidetes Alphaproteobacteria . Moreover, higher positively correlated with alpha diversity. Compared stochastic processes, imposed stronger deterministic processes (primarily homogeneous selection) structuring bay, communities tended phylogenetically clustered phosphate-concentration habitats. summary, proposed that is a major determinant influenced importance assembly.