What Is A Biological Indicator Of Water Quality?
What Is A Biological Indicator Of Water Quality? Biological indicators are direct measures of the health of the fauna and flora in the waterway. Commonly used biological indicators in freshwater include various measures of macroinvertebrate or fish diversity, benthic algal growth and benthic oxygen demand. What are 3 examples of Bioindicators? Use. Frogs and toads.