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How the EDT Model Uses Life History

How the EDT Model Uses Life History. An Overview. EDT – Habitat Model Results = Species Habitat Potential. Species-Life Stage View of Environment. Species-Neutral Environment. Raw Data and Observations. The Beverton -Holt Function. Habitat (Density Independent) Productivity.

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How the EDT Model Uses Life History

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  1. How the EDT Model Uses Life History An Overview

  2. EDT – Habitat Model Results = Species Habitat Potential Species-Life Stage View of Environment Species-Neutral Environment Raw Data and Observations

  3. The Beverton-Holt Function Habitat (Density Independent) Productivity Habitat Capacity Recruits (returning adults/spawner) Recruits/Spawner (Density Dependent Productivity) EquilibriumAbundance Spawners(number in first generation)

  4. Aggregate Life Stage P = Population P SPAWNING ADULTS SUBADULTS SMOLTS JUVENILES EGGS

  5. The EDT Cornerstones Model Habitat Environment Trajectory Generator Trajectory Generator Habitat Potential • VSP-Relevant Parameters • Habitat Capacity • LS/Pop. Productivity • Equilibrium Abundance • Diversity • Survival (limiting) factors Life History Information Used Here Need to Think Broadly About Historical Potential!! Species/Habitat Rules

  6. EDT Compares Scenarios • Reference scenario maximum potential • Difference restoration potential • Model for potential life history expression Template Patient Current or Future Condition (Degraded) Reference Condition (Ideal)

  7. Trajectories Travel Through a Survival Landscape • Trajectories = range of life history expression • Survival (limiting) factor effect on LS productivity • Different pathways have different survival rates • Combined success rate = habitat productivity • % successful = diversity index

  8. In Closing… • Life history information used to parameterize EDT trajectory generator • Emphasize both existing AND potential life history diversity • Don’t be too literal! Need to represent potential diversity (not just what exists today) • EDT selects successful trajectories

  9. Level 2s + Sensitivity = Effect on P CHANNEL MORPHOMETRY 3 Channel Attributes HYDROLOGY 7 Flow Attributes • Survival Factors TEMPERATURE 3 Temperature Attributes CHANNEL/HABITAT CHARACTERISTICS 20 Channel/Habitat Attributes WATER QUALITY/BIOTIC STRESSORS 13 Water Quality and Biotic Attributes

  10. Integrated Survival Factor ProductivityCreates Survival Landscape

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