1. Predicting threatened bull trout occurrence using Ripple, a digital terrain-based modeling program
Audrey Sawyer

2. Bull Trout (Salvelinus confluentus)
Threatened species
Pacific Northwest region
Resident, migratory, and anadromous forms
Habitat needs:
Cold
Clean
Complex
Connected

3. Problem Definition
The migratory behavior of bull trout is poorly understood. How can we best monitor the habitat and population of this threatened species?

4. Approach
Predict habitat and population for any river network using Ripple.

17. Future Work Try better method for estimating channel slope
Fine-tune model parameters to represent bull trout instead of coho salmon (grain size for spawning, ocean survival rate, habitat preference)