Key words regarding chinook release mortality from tangle nets...

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Yep, Iím sure youíve seen those estimates. They are for spring Chinook released from tangle nets in the Columbia River just above the estuary. The caveats include: cold water, spring Chinook, freshwater. These are important because we were unable to make post-release survival estimates for fall Chinook and coho captured and released from Willapa Bay but the fish were in significantly worse condition at capture, and this indicates to me they did not survive as well. In the Willapa, the water was warmer, and the fish were in the midst of physiologic transformation in the estuary.


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The Keen Eye MD
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