Macroinvertebrate Samples

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Students observed macroinvertebrate samples from local creeks to help determine water quality.

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Macroinvertebrate Samples

  1. 1. Four Mile Creek Shipbuilders Creek Mill Creek March 2009 Macroinvertebrate Samples
  2. 2. We think this is a caddisfly.
  3. 5. We have no idea what this is. Can anyone help identify this macroinvertebrate?
  4. 6. This looks like a riffle beetle.
  5. 7. Check out this mayfly nymph!
  6. 8. This crayfish was about 10 cm long!
  7. 9. Two tails, antenna, 3 pairs of legs – must be stonefly nymphs!
  8. 10. A few stonefly nymphs looked like they were getting wings! Magnified View
  9. 11. Isopod & Stonefly Nymph
  10. 12. We always find lots of amphipods (scuds).
  11. 13. We aren’t sure what kind of macroinvertebrate this is. It has lots of legs, a segmented body, and antenna.
  12. 14. Look at the colors on this aquatic worm!
  13. 15. What new questions do you have about macroinvertebrates?

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