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.
Theresa Liedtke et al focuesd on 2 forage fish species: Pacific sand lance and Pacific herring
Initially focused on Liberty Bay (Poulsbo, WA; today’s data) with non/urban coastline; now working at Possession Point (s Whidbey Island) to get higher wave action and feeder bluffs. 12 sand/sediment samples, 500ml samples preserved eggs.
Findings: 40k eggs in Liberty Bay, 83 per sample; predominantly surf smelt (94%), sandlance and rock sole remaining; >60 eggs/sample called “high egg count” sample and included in a regression.
High egg counts associated with: shell fragments, high position on beach, and proximity to sediment source (eggs moved by wave action?). If you had all 3, you had 82x chance of finding eggs on that beach. Not associated: armoring, shade, freshwater input, upslope development.
Thus far, no eggs at Possession Point.