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Ryan Klett1, Christian Torgersen2, Jeremy Cram1, Andrew Dittman3, George Pess3, Phil Roni3

Longitudinal Patterns of Fine Sediment Infiltration and Implications for Chinook Egg-to-Fry survival. Ryan Klett1, Christian Torgersen2, Jeremy Cram1, Andrew Dittman3, George Pess3, Phil Roni3 1 College of Forest Resources, University of Washington, Seattle, WA 98195

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Ryan Klett1, Christian Torgersen2, Jeremy Cram1, Andrew Dittman3, George Pess3, Phil Roni3

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  1. Longitudinal Patterns of Fine Sediment Infiltration and Implications for Chinook Egg-to-Fry survival Ryan Klett1, Christian Torgersen2, Jeremy Cram1, Andrew Dittman3, George Pess3, Phil Roni3 1 College of Forest Resources, University of Washington, Seattle, WA 98195 2 U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, Cascadia Field Station 3 NOAA Northwest Fisheries Science Center, 2725 Montlake Boulevard East, Seattle, WA 98112

  2. Fine Sediment and Egg to Fry survival Levasseur et al. 2006

  3. Objectives • Dominant scale of spatial variation • Correlation between fine sediment infiltration, physical/geomorphic features • Associations between fine sediment infiltration and Chinook spawning patterns.

  4. Study Area Teanaway R. Easton Cle Elum R. Yakima R. Cle Elum • 3 reaches,14 sites per reach with 3 redds • 4 paired sites with 6 redds • 46 sites, 132 redds Thorp N

  5. The Whitlock-Vibert Box • Simple, cheap, reliable index of sediment infiltration • Filled with pre-sorted gravels in equal proportions: 6-12 mm, 12-24, and 24-36mm. • Used by WDFW for concurrent survival study

  6. Timing of Deployment and Retrieval

  7. Deployment

  8. Retrieval

  9. Analysis of Sediment Samples • Wet sieve, dry, dry sieve,weigh • Reported as mass of fines <2mm/mass of gravel and fines in WV box

  10. Within-Site Variability in Fine Sediment D50 Velocity Spacing

  11. Within-Site Variability in Fine Sediment 0.91 m/s 0.72 m/s 0.35 m/s 101 spacing=2 and 5 m

  12. Paired Set, Within Habitat Unit

  13. Paired Set, Within Habitat Unit

  14. Paired Set, Within Habitat Unit 5m from left bank 15m from left bank two sample t-test P=0.07

  15. Multiple Habitat Units <100 m apart

  16. Multiple Habitat Units <100 m apart

  17. Multiple Habitat Units <100 m apart 1119 1118 1120

  18. Reach Scale

  19. Reach Scale

  20. Reach Scale

  21. Intrusion across Mulitple Reaches

  22. Site selection and fine sediment

  23. Implications • Threshold typically established at 15-20% • No sites exceeding 12%

  24. Thanks • Committee: chair- Christian Torgersen (USGS, UW) Tom Quinn (UW). Phil Roni, (NWFSC,NOAA) • Chris Johnson, (WDFW) • George Pess, Andy Dittman (NWFSC, NOAA) • Jeremy Cram, Katie Murray, Thomas Buehrens (UW) • Charles Strom and the Cle Elum Supplementation and Research Facility staff

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