Biological Water Quality

Aquatic Plants and Animals

This section is concerned with the effects of living material, both plant and animal, upon the quality and beneficial uses of water. These organisms may be primary pollutants or secondary pollutants.

Primary Pollutants comprise biota that are added directly to water as a result of man’s activities such as bacteria and fungus from sewage.

Secondary Pollutants represent indigenous biota such as algae and aquatic weeds. this can interfere with beneficial uses of the water either by natural processes or stimulation of aquatic growths.

Secondary pollutants have not been added to the water by man’s activities like the primary pollutants, but their presence and interference may be attributable to man’s management activities.

Next Topics…
Importance of Aquatic Communities
Stream Bioces
Flowing Water (Lotic)
Still Water (Lentic)
Liverworts and Mosses
Vascular Plants

Go Back to:
Physical Water Quality
Chemical Water Quality
Biological Water Quality
Water Basics 101

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