Benthic macroinvertebrate collection protocols



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Figure 6. Photographs showing the removal of the net from the water with an upstream motion.





  1. Repeat this process until 4 riffle/run habitats have been sampled. This will result in 4 individual kick samples that cover approximately 1 m2 (4 x 0.25 m2) of stream substrate. The 4 kick samples will be composited into 1 sample. If a diversity (fast and slow – stacked and flat, etc.) of riffle/run types is not present, collect the 4 samples from the best available habitat. It is important to obtain 4 kick samples for the composite. Always record the type and number of each riffle/run sampled on the field assessment form.
    Figure 7. Photograph of Emptying the net into a 5- Gallon bucket partially filled with stream water.





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