In the field
Electrofishing boats are used for fish sampling in reservoirs, rivers, and larger streams.
Mobile backpack units are useful for sampling in smaller streams and riffle areas of large streams.
Large seines are used in many aquatic systems as a supplementary means of collecting fish to determine fish community health.
At the more remote study sites, fish and invertebrate samples are processed at a mobile field laboratory, and samples are preserved for later analysis.
The age and growth of fish populations are determined through the use of a video-imaging and automated digitizing system.
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