Factors Indicating Water Quality

Front 1

ABUNDANCE

Back 1

THE # OF MACROINVERTEBRATES PRESENT- LARGE NUMBERS TEND TO BE FOUND IN WATER ENRICHED WITH NUTRIENTS, SMALL # MAY INDICATE EROSION, TOXIC POLLUTION OR SCOURING BY FLOODWATERS.

Front 2

FUNCTIONAL GROUP

Back 2

THE PRESENCE AND ABSENCE OF CERTAIN FEEDING GROUP OF MACROINVERTEBRATES SUCH AS GRAZERS AND PREDATORS ALSO INDICATES THE WATER QUALITY.

Front 3

TAXA RICHNESS

Back 3

DIVERSITY OF MACROINVERTEBRATES FOUND IN WATER. THE MORE DIVERSITY IN WATER, THE BETTER QUALITY IT IS.

Front 4

COMPOSITION

Back 4

THE PROPORTION OF DIFFERENT TYPES LIVING TOGETHER- HEALTHY COMMUNITIES CONTAIN A GOOD NUMBER OF MAYFLIES, STONEFLIES, AND CADDIS FLIES WHILE COMMUNITY CONTAINS A LOT OF WORMS AND MIDGE LARVAE INDICATES A DEGRADING ENVIRONMENT.

Front 5

POLLUTION TOLERANCE

Back 5

DIFFERENT MACROINVERTEBRATES HAVE DIFFERENT LEVEL OF SENSITIVITY TO POLLUTION. THE MORE NUMBER OF POLLUTION SENSITIVE ORGANISMS, THE BETTER THE QUALITY IT IS.

Front 6

COLLECTORS/FILTER FEEDERS

Back 6

MAYFLY, NYMPH, MUSSELS, WATER FLEAS, SOME FLAY LARVE AND WORMS

Front 7

SHREDDERS

Back 7

AMPHIPODS, ISOPODS, FRESHWATER CRAYFISH, AND CADDISFLY LARVAE

Front 8

SCRAPERS

Back 8

SNAILS, LIMPETS, AND MAYFLY LARVAE.

Front 9

PREDATORS

Back 9

DRAGONFLY, DAMSELFLY LARVAE, ADULT BEETLES AND BEETLE LARVAE, SOME MIDGE LARVAE AND STONEFLY LARVAE.

Front 10

INSECT

Back 10

STONEFLIES, MAYFLIES, DRAGONFLIES, DAMSELFLIES, HELLGRAMMITES, BEETLES TRUE FLIES, CADDISFLIES

Front 11

CRUSTACEANS

Back 11

CRAYFISH, SCUDS, AQUATIC SOW BUGS

Front 12

ANNELIDS

Back 12

AQUATIC WORMS, PLANARIA, LEECHES

Front 13

MOLLUSKS

Back 13

CLAMS, MUSSELS, SNAILS, LIMPETS

Front 14

AQUATIC INSECT LIFE CYCLE STAGE- COMPLETE METAMORPHASIS

Back 14

ALDERFLIES, DOBSONFLIES, BEETLES, MOTH, CADDISFLIES, AND TRUE FLIES.

Front 15

INCOMPLETE METAMORPHASIS

Back 15

MAYFLIES, DAMSELFLIES, DRAGONFLIES, STONEFLIES, AND WATER BUGS AS WATERBOATMAN AND BACK SWIMMER