Aquatic Indicators Text: Ted Schaffer Editor: Laurie Rosenberg Assistant Editor: Nadine Smith Illustrator: Jamie Buckwalter MUHLENBERG COLLEGE.

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Presentation transcript:

Aquatic Indicators Text: Ted Schaffer Editor: Laurie Rosenberg Assistant Editor: Nadine Smith Illustrator: Jamie Buckwalter MUHLENBERG COLLEGE

Living Things as Indictors of Water Quality

Esherichia Coli (E. Coli)

E. Coli Colonies on Agar Plate

Dissolved Oxygen Testing

Collecting Aquatic Organisms

Fast running streams with cold water - high dissolved oxygen levels. Still, shallow bodies of water - low dissolved oxygen levels.

Larvae: Dobsonfly, Mayfly, Stonefly Illustrations by

Damselfly adult and larvae (with gills)

Examples of Fairly Tolerant Organisms Midge Fly Larvae Scud or amphipod Illustrations by

AquaticEarthworm, Rat-tailed Maggot, Nematode