Lotic and lenitic ecosystems tend to the stability of physicochemical parameters in time, and sometimes they can present extreme conditions or in conditions of natural environmental stress for different organisms that are habiting them. Some of the impacts that affect the microorganisms are the permanent contribution of nutrients by the particulate matter and energy favouring the growth of producing organisms, which conform dense communities, with diverse populations of algae, distributed both in the water column (ticoplankton) and in peripheral growths, formed these communities an important refuge and source of food other organisms, including various species of fish, aquatic macroinvertebrates in its adult and larval phases, and zooplankton, which is why it is of interest to present some species are used as bioindicators of environmental quality given its ecological importance, with a view to preserving the environment, making decisions for mitigation or restoration.