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Conservation Framework for the Cowlitz FHMP

Conservation Framework for the Cowlitz FHMP. HSRG Principles and Recommendations. May 6, 2016. HSRG Recommendations are designed to help achieve two goals:. Help conserve naturally spawning populations Support sustainable fisheries (both commercial and recreational). GOALS.

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Conservation Framework for the Cowlitz FHMP

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  1. Conservation Framework for the Cowlitz FHMP HSRG Principles and Recommendations May 6, 2016

  2. HSRG Recommendations are designed to help achieve two goals: • Help conserve naturally spawning populations • Support sustainable fisheries (both commercial and recreational)

  3. GOALS SCIENTIFIC DEFENSIBILITY INFORMED DECISION MAKING Principles of Hatchery Management

  4. HSRG Conservation Framework • Definition of terms • pNOB, PNI, pHOS • Framework • Program purpose and type • Phases of Restoration • Preservation, re-colonization, local adaptation, full restoration • Population Designations • Primary, Contributing, Stabilizing

  5. Definition of Terms pNOB = % Natural Origin fish in the hatchery broodstock. NOB/(NOB+HOB) pHOS census = % Hatchery Origin fish on the spawning grounds pHOS effective = estimated % Hatchery Origin fish on the spawning grounds that actually reproduce (less than pHOS census). Use relative reproductive success as correction factor. PNI = Proportionate Natural Influence pNOB/(pNOB+pHOS)

  6. Hatchery Natural Hatchery Natural Program type:Genetic Integration or Segregation Segregated Broodstock Integrated Broodstock Goal: Two populations, Allow genetic divergence Goal: One population, Minimize genetic divergence (Only Hatchery fish in broodstock) (Natural-origin fish in broodstock) Two gene pools One gene pool

  7. The Purpose of Hatcheries Hatchery programs are designed to meet specific management goals: • Conservation Goals • Harvest Goals • Both

  8. Purpose of Hatchery Program:Harvest • Harvest Goals • Specific, quantitative harvest goals • Minimize pHOS

  9. Purpose of Hatchery Program:Conservation • Conservation Goals • Specific, quantitative biological targets (NOS, pHOS, PNI) • Goals depend on population status: • Preservation (prevent extinction) • Re-colonization (populate habitat) • Local Adaptation (increase productivity) • Safety net (population restored, but vulnerable)

  10. Phases of Restoration (Classification of Conservation Programs) • Phase 1: Preservation • Phase 2: Re-colonization • Phase 3: Local Adaptation • Phase 4: Full Restoration

  11. Phase 1: Preservation • Objectives • Prevent extinction • Retain genetic diversity and identity of existing population • Increase abundance • Ecosystem Conditions • Low population abundance • Habitat unable to support self-sustaining population. • Purpose of Hatchery Program • Increase abundance • Retain diversity • Provide harvest

  12. Phase 2: Re-colonization • Objective • Re-populate suitable habitat from pre-spawning adult to out-migrating smolt (all life stages). • Ecosystem Conditions • Underutilized habitat available through restoration and improved access. • Purpose of Hatchery • Speed colonization • Increase spatial diversity • Provide harvest

  13. Phase 3: Local Adaptation • Objectives • Meet and exceed minimum viable spawner abundance for natural-origin spawners • Increase fitness, reproductive success and life history diversity through local adaptation (reduce hatchery influence by maximizing PNI). • Ecosystem Conditions • Habitat capable of supporting abundances that minimize risk of extinction, prevent loss of genetic diversity, and promote life history diversity. • Purpose of Hatchery • Provide harvest (Integrated) • Demographic safety net

  14. Phase 4: Full Restoration • Objective • Maintain viable population, based on all viable salmonid population (VSP) attributes using long-term adaptive management. • Ecosystem Conditions • Habitat restored and protected to allow full expression of abundance, productivity, life-history diversity, and spatial distribution. • Purpose of Hatchery • Provide harvest (Integrated) • Demographic safety net

  15. Moving between Phases • Biologically based triggers (abundance, productivity), rather than timelines. • Triggers should allow movement both up and down the Phases. • The larger the trigger threshold, the longer local adaptation benefits (e.g., increased productivity) are deferred.

  16. Population Designations Defined by the LCRSRP (2004): • Primary — biologically significant, core, key, highly viable, important to recovery. Historically were a large segment of the population structure. Need to be at low risk of extinction. • Contributing – of some significance, are viable but lower in abundance than Primary. Contribute to diversity. • Stabilizing — a population, but may not have ever been a large segment of the population structure.

  17. How HSRG Standards apply during Phases • Preservation - no pHOS, PNI standards • Re-colonization - no pHOS, PNI standards • Local Adaptation - all standards apply • Full Restoration - all standards apply

  18. How HSRG Standards Apply by Designation and Phase

  19. Adaptive Management Process • Review Harvest and Conservation Goals • Review Key Assumptions about each population • Review Status and Trends data • Review and Apply Decision Rules • Annual Decision Making Process • Example: Chief Joseph Hatchery Program – Okanogan River Summer/Fall Chinook

  20. Adaptive Management Process

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