Water: Monitoring & Assessment
You are here: WaterOur WatersRivers & StreamsMonitoring & AssessmentFigure 4.9 Procedures for Collecting a Macroinvertebrate Sample in a Rocky-bottom Stream
Figure 4.9 Procedures for Collecting a Macroinvertebrate Sample in a Rocky-bottom Stream
|1. Approach the sample site from the downstream end. ||4. Disturb the substrate thoroughly with your feet. ||Figure 4.9 |
Procedures for collecting a macroinvertebrate sample in a rocky-bottom stream
Volunteers must follow set protocol to collect an unbiased sample.
|2. Position the net at a 45° angle with the bottom tight against the substrate. ||5. Remove the net with a forward scooping motion. |
|3. Dislodge macroinvertebrates by rubbing rocks thoroughly. ||6. Flush out the net with clean stream water. |