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Orcasphere » Nearshore Chinook use in Strait of Juan de Fuca
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Nearshore Chinook use in Strait of Juan de Fuca


Anne Shaffer

Focus on central and western strait, trying to identify restoration actions associated with dam removal on the Elwha.   The area is also an important migratory corridor, ultimately seeing about 85% of the outflow from the Salish Sea.  430 seines in many habitat types over last 18 months, 16 snorkel surveys, 2 yrs surf smelt spawn surveys.

Embayed shorelines, spits, and bluffs have higher diversity than lower rivers, but only at drift-cell scale.  Took genetic samples to see if PS chinook use the area.  63 juvenile chinook, 46% came from Elwha/Dungeness, 44% from Columbia, and 10% from inland WA.  Smelt densities change dramatically between years, usually peaking between April and September.   Kelp beds have higher densities of fish.

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