Aquatic bacteria in Canadian lakes are influenced by both living (microbial eukaryotes) and non-living (environmental) factors. The diversity of bacteria in these lakes varies due to these factors, with deterministic processes like environmental conditions and microbial interactions playing a big role. However, chance events and limited movement of bacteria also affect their composition. Positive and negative interactions between different types of bacteria and other microbes impact the overall bacterial community in the lakes. Overall, both planned and random events shape the types of bacteria found in freshwater lakes in Canada.