SRP322444 PRJNA734497 Compositional and functional shifts in bacterial community in waters at the Modaomen (the river outlet of the Xijiang River, China) along the saline gradients Saline intrusion threatens the drinking water and ecological safety in densely populated estuary. In this study, we performed 16S full-length amplicons sequencing on samples collected from the water and sediment in the Xijiang River (the main stream of the Pearl River, China) mouth, Modaomen, South China, to detect the potential bacterial taxa in response to the changes in salinity.