Includes Insects Crustaceans Mollusks. Sensitive to Changes Cannot easily escape changes Collected very easily.

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Presentation transcript:

Includes Insects Crustaceans Mollusks

Sensitive to Changes Cannot easily escape changes Collected very easily

What do macroinvertebrates do? JobExample Predatorsdragonfly, damselfly, beetles Filter feedersmussels, fly larvae, midge larvae Scraperssnails, mayfly larvae Collectorsworms, planarians Shreddersamphipods, caddisfly larvae

Group A: Very sensitive to Environmental Stresses StonefliesMayfliesCaddisfliesDobsonfliesWater penny Group B: Somewhat sensitive to Environmental Stresses DragonfliesCranefliesDamselfliesCrayfishScuds Group C: Tolerant to Environmental Stresses Midges LeechesSnailsPouch SnailsBlackfly larva

Conclusion: Freshwater organisms-the Biotic part of the Freshwater environment- have Limits or Optimal ranges in water quality where they prefer to live. The quality of water can be determined by what and how many organisms are living in that environment. Macroinvertebrates are used to evaluate the quality and history of the water environment.