The hellbender demonstrates the importance of clean water and healthy aquatic ecosystems,” said Anna Pauletta, of ...

De Multi-Species Indicator (MSI) is the geometric average of the indices in a set of (either pre-selected or unselected) species. For the species in the indicator, counts in a particular year (the ...

Mussels are also an indicator species of water quality and play an important role in rivers by filtering water constantly as they breathe and feed. They improve water quality by filtering out bacteria ...