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Jeremy Romer, Camille Leblanc, Carl Schreck, David Noakes, Shaun Clements

Monitoring Estuarine Survival of Steelhead ( Oncorhynchus mykiss ) Smolts in the Nehalem and Alsea Basins, Oregon Using Acoustic Telemetry. Jeremy Romer, Camille Leblanc, Carl Schreck, David Noakes, Shaun Clements. Goal :.

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Jeremy Romer, Camille Leblanc, Carl Schreck, David Noakes, Shaun Clements

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  1. Monitoring Estuarine Survival of Steelhead (Oncorhynchus mykiss) Smolts in the Nehalem and Alsea Basins, Oregon Using Acoustic Telemetry Jeremy Romer, Camille Leblanc, Carl Schreck, David Noakes, Shaun Clements

  2. Goal: Develop a monitoring strategy for estuarine survival that will integrate with the ODFW Life Cycle Monitoring Program • Survival- Provide estimates of lower river and estuarine survival. • Behavior- Assess differences between early and late run groups, between basins, or between years. • Physiology- Assess degree of smoltification throughout run.

  3. Life Cycle Monitoring

  4. Life Cycle Monitoring: Spatial Resolution # Last count Oregon Hatchery North Fork # Manzanita Nehalem River Pacific Ocean # Wheeler Trap # Nehalem Bay and Surrounding Area

  5. Life Cycle Monitoring: Spatial Resolution # Oregon Last count Trap # 33 Km Nehalem Bay and Surrounding Area

  6. Acoustic Technology 7 mm x 18 mm, 0.7 g in water V9 V7 steelhead 2009

  7. Two (7" x 15", 16 lb) Floats Sonic Receiver 1/2" Poly Crabline Kedge Anchor - 40 lbs Lead Weight (4 ounce) 3/8" Galvanized Chain (12') steelhead 2001

  8. Pacific Ocean

  9. Alsea Study Area OHRC

  10. Nehalem Study Area Nehalem Study Area LCM

  11. Migration Timing

  12. 30 % undetected 20 10 0 Upper Mid Lower Alsea Study – Possible Mortality 2007, 2009 Waldport 40 07 09 07 09 07 09 steelhead 2007,2009

  13. = Predator Congregation = Receiver Efficiency Alsea Estuary 95 (4) 82 (8) 100 100

  14. Alsea River Mouth

  15. 30 % undetected 20 10 N km 0 2 0 Upper Mid Lower Nehalem Study – Possible Mortality 2001, 2002, 2009 01 40 09 09 02 09 01 01 02 02 steelhead 2001,2002,2009

  16. = Predator Congregation = Receiver Efficiency Nehalem Estuary 100 93 (4) 88 (6) 100

  17. Alsea - Effect of run timing on survival Peak 25/39 42% detected 9/31 29% detected Early

  18. Nehalem - Effect of run timing on survival 21/34 62% detected

  19. Effect of run timing on time to reach the lower estuary Alsea River (55 Km) Nehalem River (33 Km) N=9 N=25 N=15 N=21

  20. Estuary Residence Time Alsea Days Mean: 1.1 Median: 0.8 Max: 6.3 Total N: 38.0 Std Dev: 1.3 Nehalem Days 1.1 0.7 7.9 34.0 1.5

  21. Alsea River Mouth Pacific Ocean 70 tagged 62 Estuary Entry - 42 Km – 88.6% 22-38 Ocean - 55 Km – 31-54%

  22. Nehalem River Mouth South Jetty Pacific Ocean 69 tagged 53 Estuary Entry - 20 Km - 76.8% 22-34 Ocean - 33 Km – 32-49%

  23. 200 Columbia (n=64) 160 Nehalem (n=38) 120 80 40 0 0 100 200 300 Travel time to Estuary (h) Distance Travelled (Km) > 41 Days steelhead 2001

  24. Migration through the Columbia Estuary 50 3 40 2 30 20 1 10 0 0 -10 12:00 0:00 12:00 0:00 12:00 steelhead 2001 River Km Tidal Stage (m)

  25. 2 r = 0.52 2 r = 0.47 2 r = 0.46 * * Spring Chinook Steelhead Fall Chinook Migration Rates to Estuary Relation to Flow 5.0 4.5 4.0 3.5 Mean Rate (kph) 3.0 2.5 2.0 1.5 75 175 275 375 475 Mean Daily Flow (kcfs)

  26. ACKNOWLEDGEMENTS ANDREW WALCH – because he is a better field tech than the one you have. ODFW Kim Jones – Gear, opportunity, motivation Steve Johnson – Alsea smolt trap setup, receiver tech support, data, advice Brian Riggers – Boat Kara Anlauf - GIS Charlie Stein – Access queries, ocean fishing Dave Stewart – Redwood housing Nehalem Kanani Bowden – Scales Lisa Borgerson – Scales Bill Ratliff – Landowner contacts Ryan Couture – OHRC, coordination Joseph O’Neil – OHRC, maker of things Eric Suring – LCM Project Leader Chris Lorion – Smolt trapping Alsea Derek Wiley – Smolt trapping Nehalem Paul Olmsted – Smolt trap Nehalem Aaron Paloni – Smolt trap Nehalem Jitesh Pattni - Smolt trap Nehalem Richard Biederbeck – Technical support OSU Jayde Ferguson – ATP, Parasites Michael Glynn – ATP assay Allison Evans – Psychotherapy & stats Schreck Lab – for the love of fish EPA Jim Powers – VR2 receivers Landowners Paul McCracken- Nehalem Pat & Bunny Wright – Alsea Richard & Kathy Ellis – Alsea ODFW District Fish Biologists Bob Buckman – Alsea Chris Knutsen – Nehalem NOAA Pete Baki –Permitting Old Man Ocean – for letting us have all of our gear back.

  27. QUESTIONS ?

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