May 10, 2012 Presented by Micki Varney Oregon Department of Fish and Wildlife.

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Presentation transcript:

May 10, 2012 Presented by Micki Varney Oregon Department of Fish and Wildlife

Evaluate Performance objectives Gauge effectiveness of recovery measures Measure progress toward recovery and mitigation goals Maintain accountability Provide basis for adaptive management

 Hatchery Evaluation/Management Evaluate hatchery rearing and release strategies Estimate Contributions to fisheries Brood stock management Smolt-to-Adult Return Rates (SAR’s)  Wild/Hatchery proportions, pHOS  Run size and composition  Distribution and abundance (fisheries and on spawning grounds)

Mouth of Snake River (Col Rkm 522) Rkm 95 Rkm 173 Rkm 346 Hells Canyon Dam Rkm 397.4

Ice Harbor Lower Monumental Lower Monumental Little Goose Lower Granite Historical Fall Chinook Returns to the Snake Basin and timing of Lower Snake Dam Construction (Ice Harbor Dam Window Counts)

Lower Snake River Fish and Wildlife Compensation Plan (LSRCP) Mitigate for juvenile passage mortality and direct loss of spawning area for 5,000 fall Chinook Return 18,300 adults/year to the Snake River Basin In-place and in-kind (maintain genetic integrity)

Roles of Players in the Egg Bank Program Kalama Falls Hatchery Lower Columbia River Juvenile releases and collection of Returning Adults Ice Harbor Dam Lower Snake River Adult Collection Lyons Ferry Hatchery Lower Snake River Juvenile releases and Adult collection Hagerman Hatchery Mid-Snake Juvenile releases Little Goose Dam

Lyons Ferry Hatchery

 9.16 million subyearling smolts (101,880 lbs) at 90 fpp (80 mm) expected smolt-to-adult return (SAR) of 0.2%  Idaho Power Co. mitigation for Hells Canyon Complex for 1.3 million eyed eggs due after LFH reached 80% of capacity

Very high stray rate—could jeopardize the SRF stock integrity

 1989 Brood Progeny Initiated 100% wire-tagging  Modified broodstock collection protocol LGR trapping Unmarked fish  Beginning in 1990, CWT’s were read prior to combining the gametes Fall Chinook trapped at Lower Granite Dam

 Yearling/Subyearling Comparative Survival Study ( )  Snake River Fall Chinook ESA Listed as threatened in 1992  Fall Chinook Acclimation Program (FCAP)-1996

Subyearling Mean = 0.05 Yearling Mean = 0.59

Natural Production 2008 Total: 3,055

120 Fall Chinook Redds located in the Clearwater River near Big Canyon Creek 2007.

ESA Listed

Hatchery Spawners Natural Spawners pHOS = proportion of fish spawning in wild consisting of hatchery-origin fish pHOS pNOB pNOB = proportion of broodstock consisting of natural-origin fish pHOSpNOB PNI  

Stock and age compostion of fall Chinook run to Lower Granite Dam Stray rates Run timing Jack proportions Hatchery/Wild Estimate the number of natural origin Snake River fall Chinook for ESA (natural spawner abundance

Downstream passage NPTH swim-ins Trapping Period Separate Run Comp Estimates are calculated for: # unique Fish Trapped in Sample Unique Fall Chinook Arriving at LGR Expanded Window counts pre and post trapping = + Multiply by the Inverse of Trap Rate Run to LGR During Trapping Period Abundance of Potential Spawners Harvest above LGR Hauled to Hatchery Pre-and Post- Trapping Periods

Fish Trapped in Sample At Lower Granite Adult Trap Determine Composition By Origin, Sex and Age Released above LGR Coded-Wire Tagged Fish Scale Analysis DNAPIT Tags Assign Lost tags Determine composition of CWT fish Untagged fish *Age, life history, Origin? Origin? H/W? Definite Age, Origin, Release Location and Rearing info Estimate untagged hatchery fish associated with CWT recoveries (Ad Only and unmarked) Hauled to LFH or NPTH *Age, Origin? H/W Determine composition of Untagged fish HATCHERY WILD Determining The Hatchery/Wild Proportion-- A Process of Elimination WILD CLIPPED UNCLIPPED CLIPPED UNCLIPPED

Snake River Hatchery Fish Age 2Age 3Age 4Age 5Age 6Unknown Age CWTOriginMJMFJMFJMFMFMFJAdultJack Total LF00YPA LF01SPA LF01YPA LF02SPA LF02YPA LF03SIPCPA LF03YPA LF03YPA LF99SCJA LF00YCJA LF01SCJA LF01SCJA LF01SCJA2 RES REAR LF01SCJA LF03YBCA LF03YBCA NPTH02SO NPT02SNLVA NPTH02SO NPTH03SA LF99YO LF00YO LF01SO LF01YO LF02SCCD LF02SO LF02YO LF03YO LF03YO LF03SO LF03YO Left Red VIELF - LOST TAG Left Blue VIELF-CJA - LOST TAG 1011 Right Green VIELF-PLA - LOST TAG 1101 Left Red VIELF - HAT SUB AGE 4 COUSE CR DIRECT Left Red VIE LF - HAT SUB RES REAR AGE 3 COUSE CR DIRECT Left Red VIELF HATCHERY SUB RES REAR AGE Lost TagHATCHERY SUB AGE Lost TagHATCHERY SUB RES REAR AGE subtotal

Hatcheries Recovery Conservation

Bonneville Power Administration Washington Dept. of Fish and Wildlife US Fish and Wildlife Service Nez Perce Tribe Additional photos: David Frame, Mike Key

Questions?