Ecology Stream Biological Monitoring - Field Work Examples

Below are links to photos that illustrate techniques covered in the guidance document:

Benthic Macroinvertebrate Biological Monitoring Protocols for Rivers and Streams: 2001 Revision

Photo
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Activity description
Photo: Using a D-net collector (disturbing the substrate) Using a D-net collector (disturbing the substrate).
Photo: Using a D-net collector (scrubbing the substrate) Using a D-net collector (scrubbing the substrate).
Photo: Using a D-net collector (splashing the catch to the bottom of the net) Using a D-net collector (splashing the catch to the bottom of the net).
Photo: Using a D-net collector (tranferring the catch to a storage jar) Using a D-net collector (tranferring the catch to a storage jar).
Photo: Measuring wetted width Measuring wetted width.
Photo: Measuring bankful width Measuring bankful width.
Photo: Measuring canopy cover Measuring canopy cover.
Photo: Measuring canopy cover (close-up of densiometer) Measuring canopy cover (close-up of densiometer).
Photo: Measuring gradient Measuring gradient.
Photo: Measuring gradient (close-up of gradient meter) Measuring gradient (close-up of gradient meter).
Photo: Counting substrate percentages Counting substrate percentages.
Photo: Counting substrate percentages (close-up) Counting substrate percentages (close-up).
Photo: Looking down into the substrate viewer Looking down into the substrate viewer.
Photo: Measuring velocity at the riffle Measuring velocity at the riffle.
Photo: Dissolved oxygen preparation in the field Dissolved oxygen preparation in the field.
Photo: Counting taxa in the lab Counting taxa in the lab.
Photo: Counting taxa in the lab (close-up of petri dish) Counting taxa in the lab (close-up of petri dish).