Stream sample collection (IMAGE)

University of Colorado at Boulder

Stream sample collection

Caption

Nate Rock, accompanied by his dog Nita, collects aquatic insects from the Snake River during a 2015 field trip for a CU Boulder course on stream ecology taught by Diane McKnight. These samples are considered a "bioassessment," which use insect diversity and abundance to characterize habitat quality, pollution tolerance, and are also later analyzed by a lab to measure metals present in their biomass.

Credit

Stephen Cardinale

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