Appendix 4. Risk Assessment Scores (note: VOPW= Volume of Preferred Water, CaCa = Carrying capacity) Great Central Sockeye CU 2. Sproat Sockeye CU 3. Henderson Sockeye CU 1. DESCRIPTION OF FACTOR DESCRIPTION OF FACTOR DESCRIPTION OF FACTOR BIOLOGICAL RISK BIOLOGICAL RISK RISK calculated for each factor calculated for each factor calculated for each factor limiting productive limiting productive limiting productive capacity capacity capacity Life History Issue/Limiting Current Future Biol Life History Issue/Limiting Current Future Biol Life History Current Future Biol Requirement factor & id Biol Risk Risk Requirement factor & id Biol Risk Risk Requirement factor & id Biol Risk Risk number category category number category category number category Category A. Terminal Migration & Spawning A. Terminal Migration & Spawning A. Terminal Migration & Spawning 2. volume LF2: Significant Moderate High 2. volume LF2: Significant Moderate High 9. Stable LF10: Riparian Very High Very High of preferred reductions of of preferred reductions of channel and disturbance water (VOPW, VOPW in & water (VOPW, VOPW in inlet & stable coarse resulting in bank low temp, high estuary with low temp, high estuary with bedload erosion, increased O2) in estuary chronic to impacts O2) in estuary chronic to impacts transport bedload. on adult "fitness". on adult "fitness". 4. Favorable LF4: High temps Moderate Very High 4. Favorable LF4: High temps Moderate Very High 11b. Spawning LF12B: High Very High temperatures slow or stop temperatures slow or stop habitat quantity Inadequate TRIB for low stress upstream for low stress upstream sufficient to spawning habitat passage migration passage migration fully "seed" fry (i.e. CU rearing habitat. production TRIB SPAWNERS potential limited ONLY by initial fry recruitment). 11b. Spawning LF12B: Moderate Moderate 11b. Spawning LF12B: Moderate Moderate 11. Spawning LF12: Inadequate Moderate High habitat Inadequate TRIB habitat quantity Inadequate TRIB habitat quantity BEACH spawning quantity spawning habitat sufficient to spawning habitat sufficient to habitat (i.e. CU sufficient to (i.e. CU "seed" fry (i.e. CU fully "seed" fry production fully "seed" fry production rearing habitat. production rearing habitat. potential limited rearing habitat. potential limited TRIB SPAWNERS potential limited BEACH by initial fry TRIB by initial fry ONLY by initial fry SPAWNERS recruitment). SPAWNERS recruitment). recruitment). ONLY ONLY
Appendix 4. Risk Assessment Scores (note: VOPW= Volume of Preferred Water, CaCa = Carrying capacity) 1. Great Central Sockeye CU 2. Sproat Sockeye CU 3. Henderson Sockeye CU DESCRIPTION OF FACTOR BIOLOGICAL RISK calculated for each factor limiting productive capacity DESCRIPTION OF FACTOR BIOLOGICAL RISK calculated for each factor limiting productive capacity DESCRIPTION OF FACTOR RISK calculated for each factor limiting productive capacity Life History Requirement Issue/Limiting factor & id number Current Biol Risk category Future Biol Risk category Life History Requirement Issue/Limiting factor & id number Current Biol Risk category Future Biol Risk category Life History Requirement factor & id number Current Biol Risk category Future Biol Risk Category A. Terminal Migration & Spawning A. Terminal Migration & Spawning A. Terminal Migration & Spawning 2. volume of preferred water (VOPW, low temp, high O2) in estuary LF2: Significant reductions of VOPW in & estuary with chronic to impacts on adult "fitness". Moderate High 2. volume of preferred water (VOPW, low temp, high O2) in estuary LF2: Significant reductions of VOPW in inlet & estuary with chronic to impacts on adult "fitness". Moderate High 9. Stable channel and stable coarse bedload transport LF10: Riparian disturbance resulting in bank erosion, increased bedload. Very High Very High 4. Favorable temperatures for low stress passage LF4: High temps slow or stop upstream migration Moderate Very High 4. Favorable temperatures for low stress passage LF4: High temps slow or stop upstream migration Moderate Very High 11b. Spawning habitat quantity sufficient to fully "seed" fry rearing habitat. TRIB SPAWNERS ONLY LF12B: Inadequate TRIB spawning habitat (i.e. CU production potential limited by initial fry recruitment). High Very High 11b. Spawning habitat quantity sufficient to fully "seed" fry rearing habitat. TRIB SPAWNERS ONLY LF12B: Inadequate TRIB spawning habitat (i.e. CU production potential limited by initial fry recruitment). Moderate Moderate 11b. Spawning habitat quantity sufficient to "seed" fry rearing habitat. TRIB SPAWNERS ONLY LF12B: Inadequate TRIB spawning habitat (i.e. CU production potential limited by initial fry recruitment). Moderate Moderate 11. Spawning habitat quantity sufficient to fully "seed" fry rearing habitat. BEACH SPAWNERS ONLY LF12: Inadequate BEACH spawning habitat (i.e. CU production potential limited by initial fry recruitment). Moderate High
Report-on-the-Barkley-Sockeye-Risk-Assessment-Workshop-June-2013-2.docx