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Hood Canal Steelhead Acoustic Telemetry Studies

Hood Canal Steelhead Acoustic Telemetry Studies. Barry Berejikian and Skip Tezak NOAA Fisheries Northwest Fisheries Science Center Manchester Research Station. Hood Canal steelhead. Historically abundant Chronically depressed since mid-late 80’s

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Hood Canal Steelhead Acoustic Telemetry Studies

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  1. Hood Canal Steelhead Acoustic Telemetry Studies Barry Berejikian and Skip Tezak NOAA Fisheries Northwest Fisheries Science Center Manchester Research Station

  2. Hood Canal steelhead • Historically abundant • Chronically depressed since mid-late 80’s • Some indications of a north-south productivity ‘gradient’ • Limiting factors & potential role of supplementation

  3. Depressed Depressed Depressed Unknown Depressed Depressed Unknown The problem Data from http://wdfw.wa.gov/fish/sassi/intro.htm

  4. Can supplementation improve productivity of natural populations? ?

  5. Admiralty Inlet Hood Canal Bridge Big Beef Creek Hamma Hamma R. Dewatto R. Skokomish R. 2005 Hood Canal Steelhead Study • 50 Hatchery reared steelhead • (Hamma Hamma River) • Weight: 48.9 – 129 g • Length 173-233 mm (FL) • V8 6L Tags provided and • implanted by POST • Tagged: 5/13/05 • Released: 5/23/05

  6. 2005 Results Summary

  7. Admiralty Inlet Hood Canal Bridge 15 4 Big Beef Creek 5 Hamma Hamma R. 13 Dewatto R. 31 Skokomish R. 2005 Hood Canal Steelhead Study N

  8. Travel time 4.6 d (0.8 d) 1.2 – 2.0 blps 12.8 d (10.7 d) 0.1 - 0.5 blps

  9. Migratory pathway

  10. 2006 Hood Canal Steelhead Study (Proposed) • H01:Hood Canal steelhead populations do not differ in early marine survival (river mouth to north end of Hood Canal, and Hood Canal to Straits of Juan de Fuca and Georgia). • H02: Hood Canal steelhead populations do not show a preference for nearshore vs. open water migration routes through Hood Canal. • H03: Steelhead individuals and populations inhabiting the nearshore environment spend a similar amount of time in eelgrass habitat and adjacent non-eelgrass habitats. • H04: Individual steelhead characteristics: outmigration timing, length, weight, and condition factor do not affect rate of migration, habitat use, or stage-specific survival.

  11. Admiralty Inlet Hood Canal Bridge Big Beef Creek Hamma Hamma R. Dewatto R. Skokomish R. 2006 Hood Canal Steelhead Study Design • Three populations (Hamma • Hamma R., Skokomish R., • Big Beef Creek) • 50 Wild smolts per population • V9 Vemco Tags • Two complete listening lines • (Hood Canal Bridge and • mid-Canal)

  12. Collaborators • Army Corps of Engineers • Hood Canal Coordinating Council • Hood Canal Salmon Enhancement Group • Jamestown S’Klallam Tribe • Kintama Research Corp./POST • Long Live the Kings • Northwest Fisheries Science Center • Point No Point Treaty Council • Skokomish Tribe • Washington Department of Fish and Wildlife • University of Washington

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