Science Policy Exchange

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Science Policy Exchange
Mainstem Passage and Survival
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Alternative Conceptual FoundationReturn to the
River (1996 2006)

• Salmonid life history diversity and habitat
  diversity are linked
• Increases in habitat abundance, diversity, and
  connectivity increase salmonid life history
  diversity
• Increases in habitat and life history diversity
  increase salmon production
• Increased abundance and production increase
  resilience

3
FWP Assumptions

• Habitat-based program
• rebuilding naturally producing fish populations
  by protecting and restoring habitats, including
  anadromous fish migration corridors
• Juvenile and Adult Passage
• Fish passage and transportation, should protect
  biological diversity across the range of species,
  stocks and life-history types
• Natural Processes
• Mainstem hydrosystem operations and fish passage
  efforts should be directed at re-establishing
  natural river processes where feasible
• Protect and Expand Mainstem Spawning and
  Rearing Habitat

Spring Chinook spawning habitat Upper Imnaha
Subbasin
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Direct Dam and Reach Survivals

• Juvenile survival rates
• Adult survival and return rates?
• Relationship between direct survival estimates
  and SAR estimates.
• Speaker Steve Smith

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Adult Passage

• Variation in adult escapement
• Ranges from 65 to 95.
• Factors affecting escapement
• River conditions
• Transport and adult performance
• Transported fish vs. in-river migrants
• Speaker Chris Peery

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RSW Passage and Survival

• Removable Spillway Weirs
• Reduced Flows vs. BiOp flows
• - 2006 vs. 2007
• Management implications
• for RSW at Ice Harbor Dam
• Speakers Noah Adams / Gordy Axel

Rocky Reach Surface collector being transported
before installation
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Snake River Chinook Survival

• Is there evidence linking estuary and early-ocean
  mortality to migration through the hydrosystem?
• Comparison of survivals
• Upriver / downriver populations
• Conclusions
• Speakers Howard Schaller
  Charlie Petrosky

Bonneville Juvenile Bypass
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Discussion Periods

• Time is limited
• Focus on Science Summary and Policy Implications
• Discussion
• Exchange between Council members, managers, and
  scientists
• Emphasis on policy and managers perspective

Schedule Enforcers