1. TU EBT Portfolio, Range-wide, & Focal Area Assessments
Identify EBT strongholds, persistent populations, and migratory life histories based on EBTJV data, stream habitat diversity, and EBT habitat suitability
Identify critical and missing elements
Range-wide & Focal Area
assessments
Characterize habitat integrity and future security of patches using widely available GIS datasets, refined with focal area-specific GIS datasets
Determine conservation needs and strategies

2. EBT Portfolio
Concept: Diversity confers long-term viability in face of disturbances and environmental variability
Balanced
Unbalanced
Retains historical genetic, life history, and geographic diversity
Presence of large inter-connected populations
Populations occupy a variety of habitats (streams, rivers, lakes)
All life history forms present historically are represented
Non-hybridized populations exist in all historically occupied sub-basins
Has lost historical diversity
Small populations
Minimal connectivity
Small stream habitats
No migratory populations
Reduced geographic distribution

3. EBT Portfolio Applied to EBT: “3-R” Approach
Identify diminished elements of diversity and potential place-based opportunities to protect and restore important elements of diversity
“3-R” Approach
Resiliency: Having sufficiently large populations and intact habitats to facilitate recovery from rapid environmental change
Redundancy: Saving enough different populations so that some can be lost without jeopardizing species
Representation: Protecting diversity, especially life history diversity

4. EBT Portfolio: Eastern Brook Trout Joint Venture patches
Portfolio based on:
Allopatric EBT population extent - EBTJV
Patch size - EBTJV
Stream habitat diversity as estimate of life history diversity - TNC
EBT habitat suitability within patch – DeWeber/Wagner 2015

5. EBT Portfolio

6. EBT Range-wide Assessment: Habitat Integrity
Based on a suite of factors related to:
Land Use (e.g., forest cover, riparian cover, agriculture)
Habitat Fragmentation (e.g., road density)
Flow Regime (e.g., dams, impervious surfaces)
Water Quality (e.g., 303d listing, active mines)
Each factor scored 1 – 5, total score is sum

7. EBT Conservation Strategies