File:NOAA 2017 Puget Sound ESA status salmonids.pdf

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NOAA_2017_Puget_Sound_ESA_status_salmonids.pdf(file size: 3.03 MB, MIME type: application/pdf)


Review Pcereghino (talk) 16:29, 4 March 2021 (UTC)

  • Chinook summary
    • escapement, and spawner-recruit levels are below those identified as consistent for recovery in all populations.
    • hatchery-origin spawners are present in high fractions in most populations outside the Skagit
    • Most populations have declined since the last status review
    • Efforts were made to develop monitoring plans for all watersheds in 2014 as recommended in the 2007 supplement. These programs are not operational for assessing recovery programs.
  • Hood Canal Summer Chum Summary
    • natural-origin spawner abundance has increased since listing.
    • productivity rates have increased since last review (2011), and have been greater than replacement rates. only 2 of 8 individual spawning aggregates have viable performance.
    • Spatial structure and diversity viability parameters have increased and almost meet VSP
    • although improved the ESU does not meet criteria for population viability at this time.
    • co-managers remain concerned that local government measures are insufficient. HCCC proposes strong habitat monitoring and adaptive management.
  • Steelhead Summary
    • Biological risks haven't changed since listing in 2007.
    • DPS at very low viability, including all three of constituent MPGs and many of its 32 DIPs.
    • "Natural spawning by hatchery fish" and "limited use of suitable habitat" are still limiting viability
    • warm ocean temperatures, fragmented or degraded spawning and rearing habitat, reduced snowpack, altered hydrographs producing warm summer low flows, and low Salish Sea marine survival are all anticipated to constrain recovery.

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