Temperature's Impact on Bacteria in Mountain Streams

In mountain streams, temperature plays a big role in shaping the community of bacteria living in the sediment. While temperature and nutrients are important factors in oceans and lakes, their influence on mountain stream bacteria isn't well understood. Scientists studied the Taizicheng River, a high-latitude mountain stream, to figure out what's going on. They discovered that different bacteria take charge at different times of the year. In warmer periods, Acidobacteriota is the boss, while Bacteroidota rules during the freezing season. Interestingly, the jobs these bacteria do didn't change much. Tests showed that temperature and nutrients are key drivers of bacterial community structure, with temperature having a direct impact on bacterial metabolism. The findings also revealed that temperature affects bacteria both directly and indirectly by influencing sediment conditions. Although temperature and nutrients don't significantly alter the bacteria's functions, understanding how they affect community structure is crucial for protecting mountain stream ecosystems.