Group Three Taxa - Pollution Tolerant Organisms

Please choose from the following list for additional information:

• Aquatic Worms (Phylum Annelida and others)
• Pouch Snails (Class Gastropoda)
• Black Fly Larvae (Family Simuliidae)
• Leeches (Class Hirudinea)
• Midge Larvae (Family Chironomidae)

Biological Indicator Organisms Page