Development of a Nebraska culvert aquatic organism passage screening tool.
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2012-12-01
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Abstract:Culverts channelize water relative to natural stream reaches, which can increase the velocity of water passing through them. Increased water velocities can alter stream morphology and create a possible barrier or obstacle to fish passage, which may affect localized fish abundance and diversity. In addition to changes in water velocity, a waterfall can be created on the downstream side. These changes potentially limit the ability of stream fishes to reach upstream areas.
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