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A student collects aquatic insects in the Little Bear River (Utah) with a Surber sampler. The 1 square foot frame of the net is placed on the stream bottom, and rocks are individually rubbed to dislodge the insects that then flow back into the net.
Photo: 31 October 2008
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Wayne Wurtsbaugh
Limnologist
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Registered: January 2000
Posts: 579
Date: November 8, 2008
Views: 10,861
Filesize: 92.4kb, 947.7kb
Dimensions: 1200 x 900
Keywords: hess sampling stream river benthos insects invertebrates method limnology nabs substrate mayfly ept
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