1. Evaluating Basins for Salmon Conservation across the North Pacific: Abundance, Diversity and Threats Matthew Goslin – Ecotrust Malin Pinsky – Wild Salmon Center, Stanford Dane Springmeyer – Wild Salmon Center Jon Bonkoski – Ecotrust Presented at American Association of Geographers, April 2007 Society for Conservation GIS, June 2007

3. Current Wild Salmon Center Program Areas

7. Hydro1k Units

8. PSCA Study Area and Historic Range of Salmon

12. Methods of Estimating Abundance for Coho

13. Chinook Abundance

14. Chum Abundance

15. Coho Abundance

16. Pink Abundance

17. Sockeye Abundance

18. Steelhead Abundance

20. Life History Richness for Chinook

21. Species and Life History Richness

23. Conservation Value derived from Life History Richness and Abundance Scaled by North Pacific Maximum per Species

24. Conservation Value derived from Life History Richness and Abundance Scaled by North Pacific Total per Species

25. Pacific Salmon Ecoregions: distinguished by major marine features and basins

26. Potential Priority Watersheds: Watersheds with High-Ranking Conservation Values Distributed across Salmon Ecoregions

28. Pacific Salmon Hatcheries

29. Hatcheries by Catchment

30. Landscape Suitability Indices: Urban Land Use

31. Landscape Suitability Indices: Agriculture

32. Dams within Pacific Salmon Basins

33. Modeling Dam Impacts on Fish Passage through a Stream Network Using ArcGIS Network Analyst and the TRACE ACCUMULATE function, stream networks are traced upstream starting from the basin’s outlet. “Impedance” values that are associated with dams and represent a reduction in stream passability for migrating salmon are accumulated through the network.

34. Modeling Dam Impacts on Fish Passage through a Stream Network Stream passability declines as a percent of its previous passability. Each passable dam encountered reduces passability by 10% of the pre-dam passability. Cumulative impedance represents cumulative reduction in stream passability. Impassable dams reduce passability to 0 and impedance becomes 1. ( 1 - .73) = .27 (.81 - .81 * .1) = .73 .81 ( 1 - .81) = .19 (.90 - .90 * .1 ) = .81 .90 ( 1 - .90) = .10 (1.0 - 1.0 * .1) = .90 1.00 Post-dam Pre-dam Cumulative Impedance Passability

35. Impedance to Fish Passage: Columbia, Snake and Sacramento River mainstems

36. Impedance to Fish Passage through Stream Networks: Pacific Northwest and Northern California

38. Dam Impact (Impedance) Index by Watershed: Pacific Northwest and California

39. Index of Dam Impacts on Fish Passage

40. Combined Landscape Threat Index: derived from PCA of Dams, Ag and Urban Indices

41. Conservation Value Versus Threats and Potential Conservation Strategies Restoration-oriented, Reactive Strategy Protection-oriented, Proactive Strategy Threat Value