aquatic indicators text: ted schaffer editor: laurie rosenberg assistant editor: nadine smith...
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Aquatic IndicatorsText: 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)
http://www.bact.wisc.edu/Bact330/lectureecoli
E. Coli Colonies on Agar Plate
http://www.bact.wisc.edu/Bact330/lectureecoli
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)
http://biodidac.bio.uottawa.ca
Examples of Fairly Tolerant Organisms
Midge Fly LarvaeScud or amphipod
Illustrations by
AquaticEarthworm, Rat-tailed Maggot, Nematode
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