Planktonic bacterial community in Nanchang in February, October and December

Surface waters are the carriers of the material cycle and the home of aquatic organisms. However, in recent centuries, surface water bodies have been affected by human activities, which affect aquatic ecosystems by increasing environmental stresses, and planktonic microorganisms, as direct recipients of environmental stresses, have a significant impact on the elemental cycle and energy flow of the whole aquatic ecosystem. Previous studies have shown that interspecific interactions and diversity of planktonic microorganisms are affected by environmental stress [1, 2], but environmental stress, usually as an external abiotic factor, does not fully explain the dynamics of planktonic microbial communities, and the driving role of biological factors within cannot be ignored. Therefore, it is important to explore the integrated influence mechanisms of interspecific interactions and diversity of planktonic microorganisms to maintain the stability of aquatic ecosystems. In addition, evaluating the status of surface water bodies under environmental stress from a biological perspective has important ecological value for comprehensive management and protection.