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Study Partners

Acoustic Tag Monitoring for Napa River Steelhead at the Napa Plant Site Year One Preliminary Results Presented to Napa Sonoma Marsh Restoration Group November 17, 2010 Presented by Thomas Keegan, Principal Investigator ECORP Consulting, Inc. in association with Duck’s Unlimited NOAA.

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Study Partners

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  1. Acoustic Tag Monitoring for Napa River Steelhead at the Napa Plant SiteYear One Preliminary ResultsPresented toNapa Sonoma Marsh Restoration GroupNovember 17, 2010Presented byThomas Keegan, Principal Investigator ECORP Consulting, Inc.in association withDuck’s UnlimitedNOAA

  2. Study Partners • Ducks Unlimited • NOAA Fisheries • UC Davis Biotelemetry Lab • Napa County Resource Conservation District • Brezina and Associates

  3. Study Interests • Contribute to the innovative collection of sound, scientifically based information • NOAA Fisheries is a study participant and has indicated that fish distribution data are necessary for our understanding of how these fish species use restored tidal marsh habitat • Enable NOAA Fisheries and other regulatory agencies to make well-informed decisions regarding potential impacts that proposed restoration activities and other maritime construction activities, may or may not have on special-status species and habitats

  4. Background Overarching LTMS and UC Davis/NOAA Study In 2007, focused on hatchery late fall run Chinook salmon and steelhead (Juvenile Salmonid Outmigration and Distribution Study Design for the San Francisco Estuary) In 2009, green sturgeon added as a target species Inception of the California Fish Tagging Consortium (CFTC) Extensive receiver array (VEMCO equipment) large influx of tagged fish through system Centralized database More recently, tagging of wild fish populations salmonids and green sturgeon

  5. LTMS and UC Davis/NOAA Overarching Study: Initial Receiver Locations

  6. Introduction A Story of Partnership • NOAA, funding through ARRA, requires monitoring of special-status fish species in restored tidal marsh habitat • Ducks Unlimited, as grantee, interested in innovative way to track wild Napa River steelhead, and determine use of habitats • Wild Napa River Steelhead Available from Napa County Resource Conservation District

  7. Study Objectives • to assess the utilization of restored tidal marsh habitats by special-status salmonids and green sturgeon • to determine the regional effectiveness of tidal restoration efforts on these species • to partner with other study investigators (i.e., participate with the CFTC Central Database maintained by the NOAA Santa Cruz Laboratory)

  8. Methods

  9. VEMCO Receiver Deployment • 10 VR2W receivers installed for NPS Project • 2 in Napa River (gate) above NPS • 1 Fagan Slough • 1 North Unit Breach • 1 Center Unit Breach (Barge Canal) • 2 South Unit Breaches • 1 Dutchman Slough • 2 below Tennessee Bridge (gate) • 4 VR2W receivers installed for USAR, Mare Island • 2 at Mare Island piers 22 and 23 • 2 at San Pablo Dredge Disposal site (SF9)

  10. Receiver Deployment on Piers • Schedule 80 PVC deployment bracket • Attached to pier pilings with large cable ties • Safety lines through PVC and tied to pier pilings • Study identification placard

  11. Receiver Deployment Bracket

  12. Acoustic Release Device and Setup for Open-water Receiver Deployment

  13. Acoustic Tag for Testing Signal Reception

  14. Collection of Juvenile Steelhead (actually by NCRCD staff!) for Tag and release with VEMCO V7 Tags

  15. Acoustic Tags in Antiseptic

  16. Implantation of Acoustic Tag into Body Cavity of Juvenile Napa River Steelhead

  17. After Recovery from Surgery, Fish is Released at Point of Capture

  18. Napa River Steelhead collected from the RST and tagged

  19. Preliminary NPS Project Results • Tracked 14 of 20 tagged fish through Napa River, into and through SF Bay • Off-channel habitat usage documented • Tracked 10 Napa River steelhead (50%) through GG Bridge array • Tracked 6 of those fish on Pt. Reyes Array • Numerous tag ID’s from Sac’to River/Delta release (CFTC) documented in vicinity of NPS; including CV steelhead, Chinook salmon, and green sturgeon

  20. Napa Plant Site Project Receiver Locations

  21. Mare Island and SF9 Locations Pier 22 & 23 SF9 Dredge Material Placement Area

  22. Tracking of Napa River Steelhead through Project Area

  23. Travel Days from Date of Release through Project Area

  24. Emigration and Habitat Use Rate of Emigration can affect utilization of tidal marsh habitats by fish, and is largely affected by: Volume of Napa River outflow (storm events) Tidal regime (large vs. small fluctuations) Size at emigration Maturity of tidal marsh habitat To the extent possible, we will take into account the above factors in planning our tagging and release strategy during the next two years of the study.

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