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Experimental streams - Recolonization of the Cedar River, WA by Pacific salmon

Published by Northwest Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 20, 2025 | Last Modified: 2017-02-16T00:00:00.000+00:00
The objective of this study is to quantify population, community, and ecosystem level changes as a result of salmon recolonization of the Cedar River, WA above Landsburg Dam. The dam was installed in 1901, blocking the upstream migration of adult salmon and steelhead from about 43 km of river habitat. A fish ladder was installed in 2003 to allow adult salmon passage. We collected baseline data on water chemistry, habitat, and fish populations including resident trout and sculpin populations in 2000-2002. These field surveys have been ongoing since 2000. A mark-recapture study in Rock Creek, the largest tributary available to salmon, was started in 2004 and ended in 2010 to quantify growth, movement, and survival of juvenile coho and resident trout. Two experimental stream studies conducted to quantify salmon carcass effects on resident organisms. Data on nutrients and insects to salmon carcass additions.

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