Riverine bacteria are vital to geochemical cycling, climate change, and water environments, and the relative research requires knowledge from multiple disciplines, including microbiology, ecology and river dynamics. The influence of river dynamics and morphology on riverine bacteria is drawing increasing attention; yet, there are few comprehensive reviews on the riverine bacteria from the perspective of river dynamics. Therefore, this paper systematically reviews the research progress from the perspective of river dynamics, focusing on the research techniques and methods of riverine bacteria, the impact of hydrodynamic conditions, the ecological effects of dam construction, and the spatial distribution pattern of river bacteria. The review indicates that hydrodynamic processes and human activities such as dam construction drive community reorganization of planktonic and sedimentary bacteria across scales from microhabitats to macrolandscapes by altering aquatic environments, promoting microbial interactions, and affecting diversity, thereby shaping their complex spatiotemporal distribution patterns. Finally, this paper looks forward to future research directions, emphasizing the need to further reveal the diversity of planktonic and sedimentary bacteria, their genetic functions and community construction mechanisms, and to deeply analyze the feedback driving relationship between hydrodynamics, river morphology and riverine bacteria.
Du et al. (Fri,) studied this question.