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NORTHERN PIKEMINNOW MANAGEMENT PROGRAM

NORTHERN PIKEMINNOW MANAGEMENT PROGRAM. PROJECT 199007700. PREDATOR CONTROL PROGRAM SUMMARY. Listed as Project Recommendation under Future Needs. Based on sound science and in-depth knowledge. Potential consequence of stopping unacceptable. BACKGROUND. JOHN DAY RESERVOIR (1983-86).

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NORTHERN PIKEMINNOW MANAGEMENT PROGRAM

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  1. NORTHERN PIKEMINNOW MANAGEMENT PROGRAM PROJECT 199007700

  2. PREDATOR CONTROL PROGRAM SUMMARY Listed as Project Recommendation under Future Needs Based on sound science and in-depth knowledge Potential consequence of stopping unacceptable

  3. BACKGROUND JOHN DAY RESERVOIR (1983-86) Northern Pikeminnow Consumed 1.4 m Juvenile Salmonids Annually Were Responsible for 78% of Predation Predation Increased With Size 10-20% Exploitation = 50% Reduction in Predation

  4. BACKGROUND SYSTEM-WIDE (1990-92) Predation Relative to John Day Reservoir Below Bonneville Dam = 800% Lower Columbia Reservoirs = 325% Lower Snake River Reservoirs = 40% Loss to Predation = 8% of Population

  5. PROGRAM

  6. Year Catch % Year Catch %

  7. Year Catch % Year Catch %

  8. Year Catch % Year Catch %

  9. Year % Year %

  10. SYSTEM-WIDE (1990-92) Below Bonneville Dam = 800% Lower Columbia Reservoirs = 325% Lower Snake River Reservoirs = 40% Loss to Predation = 8% of Population

  11. Compensation Evaluation: (Consumption, Growth, Mortality, etc.) Northern Pikeminnow None Smallmouth Bass None Walleye None

  12. PLANS 80%

  13. PLANS 3%

  14. 12% 17% PLANS

  15. PLANS 5%

  16. CLOSING THOUGHTS NPPC AUDIT 2000 COST EFFECTIVE THOROUGH EVALUATION

  17. NORTHERN PIKEMINNOW MANAGEMENT PROGRAM PROJECT 199007700

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