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Assessment Of Future Change

This assessment analyzes the projected changes in coastal Coho salmon populations and stream ecosystems in the Willamette River Basin from 1850 to 2050. It includes various conservation scenarios and examines the impact of different stream types on fish richness and abundance. Utilizing models of ecosystem structure and function, the study highlights significant patterns of change in fish populations, such as cutthroat trout and EPT richness, across tributary junctions and channel types over the next 50 years, informing conservation management strategies.

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Assessment Of Future Change

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  1. AssessmentOf Future Change Stan Gregory Department of Fisheries & Wildlife Oregon State University

  2. Coastal Coho Salmon

  3. 1850

  4. 1995

  5. 2050 Scenario

  6. 2050Conservation Scenario

  7. 1850

  8. Models of stream ecosystem structure and function

  9. Willamette River Basin 2nd to 4th order streams (6500 km)

  10. Cutthroat Trout

  11. EPT Richness

  12. Fish Richness – Species/km • Tributary Junction 19.7 • Multiple Channel 19.2 • Single Channel 16.8

  13. Fish Abundance – # Captured • Tributary Junction 624 • Multiple Channel 594 • Single Channel 390

  14. McKenzie Jct M Willamette River Basin Planning Atlas, p. 63

  15. Fish 50 Year Pattern Of Change

  16. Develop. 50 Year Pattern Of Change

  17. ERC Conservation

  18. MAX Conservation

  19. ERC Development

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