How are moderately sensitive species defined?

Moderately sensitive species are defined as those that can thrive in slightly polluted waters or non-polluted environments. This definition is critical in the context of assessing water quality because these species often serve as indicators of ecosystem health. They have a certain level of tolerance to pollution, which allows them to survive in environments that might be challenging for more sensitive species.

In ecological assessments, these species can provide valuable insights into water quality. If a high number of moderately sensitive organisms are present, it generally implies that the water quality is relatively good, but possibly not pristine. Their presence indicates that the environment has some level of disturbance but is still capable of supporting life, distinguishing them from species that are exclusively found in clean waters or those that cannot survive in polluted conditions.