Monitoring the Three-Dimensional Movement of Multi-Species Fish Assemblages in a Modeled Environment Using Acoustic Tag Technology

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Talk by senior fisheries scientist, Tracey Steig given at the 2012 American Fisheries Society (AFS) Annual Meeting in Minneapolis, MN. Acoustic telemetry data acquired and compiled from Fish Fest! …

Talk by senior fisheries scientist, Tracey Steig given at the 2012 American Fisheries Society (AFS) Annual Meeting in Minneapolis, MN. Acoustic telemetry data acquired and compiled from Fish Fest! 2011.
In September 2011, HTI and the AFS Student Subchapter co-hosted Fish Fest! at the Seattle Aquarium in conjunction with the American Fisheries Society (AFS) Annual Conference in 2011. In addition to breaking attendance records, HTI acoustically tagged and 3D tracked coho salmon (Oncorhynchus kisutch), canary rockfish (Sebastes pinniger) and yellowtail rockfish (S. flavidus) with the Seattle Aquarium team. Together, they tracked fish behavior in real-time as they traveled throughout the mammoth 120,000 gallon Window on Washington Waters (WOWW) tank.

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  • 1. Monitoring The Three-Dimensional Movement of Multi-SpeciesAssemblages in a Modeled Environment Using Acoustic Tag Technology:Results from HTI’s 2011 at the Seattle Aquarium Tracey W. Steig Hydroacoustic Technology, Inc. 715 N.E. Northlake Way Seattle, WA 98105 (206) 633-3383 tsteig@HTIsonar.com© 2012 Hydroacoustic Technology, Inc.
  • 2. Presentation Outline Acoustic Tag Study Location  Steinhart Aquarium in San Francisco in 2007  Seattle Aquarium in Seattle in 2011 Acoustic Tag System  HTI Model 290 Acoustic Tag Receiver  HTI Model 795 Acoustic Tags Study Results  3D Tracks and Position Densities  Simultaneous Monitoring of Multi-Species  Comparison of Species-Specific BehaviorsT. Steig AFS 2012 Presentation August 22, 2012
  • 3. Live Telemetry Demo at AFS 2007In 2007, at the Steinhart Aquarium in San Francisco, HTIdemonstrated real-time acoustic tag tracking of alligator gar.The gar were fed herring which were implanted with acoustictags.The 3D gar positions were shown in real-time on projectedscreens near the tank. Animations were created of the 3Dresults. For more information regarding this study, see this link:http://www.htisonar.com/case-studies-alligator-gar.htm
  • 4. The Seattle AquariumWindow on WashingtonWaters (WOWW) Tankincludes large rockformations which serve ashabitat for anemones, seastars, urchins and coral.This marine aquarium hasinverted glass planes forviewing at two differentlocations and incorporatescomplex rock structuresthat made positioningacoustically-tagged fish in3D challenging.
  • 5. Aquatic EnvironmentWOWW Tank – Designed to replicate theseascape around Neah Bay on the NWtip of Washington State.Capacity120,000 gallonsSizeRoughly 20 ft by 40 ft by 20 ftNon symmetrical dimensions, complexmonitoring environmentSpecies Tracked with Acoustic TagsCanary Rockfish (Sebastes pinniger)Yellowtail Rockfish (S. flavidus)Coho Salmon (Oncorhynchus kisutch)Tag Parameters & Monitoring Duration~ 3 pulses/sec, 3 msec Encoded PW~ 3 hours of data collection (& partying)
  • 6. Acoustic Telemetry System Model 290 Acoustic Tag Receiver 9 of 16 Channels Used for Real-Time 3D Tracking Study • Real-time 3D tracking, positioning and displaying. • No problems associated with tag signal collisions. Hydrophone • No problems associated with false positive ID tag codes. x9T. Steig AFS 2012 Presentation August 22, 2012
  • 7. Model 795 & 800 Acoustic Tags 0.5 gm, 15-20 d life 0.67 gm, 20-35 d life 1.4 gm, 40-50 d life 3.1 gm, 45-65 d life 13 gm, > 6 mo life 23 gm, > 3 yr life Tags operate at 307 kHz and are fully programmable for pulse width, period, and activation.T. Steig AFS 2012 Presentation August 22, 2012
  • 8. Standard 3-D Hydrophone Geometry  3D positioning requires receiving the same transmitted signal on at least 4 hydrophones  Ideal hydrophone geometry has equal separation in X, Y, and Z planes (i.e. cube shaped hydrophone array)  Accurate hydrophone positions are required for accurate tag position estimate  Signal arrival time differences Z are used to calculate the 3D position of the acoustic tag Y relative to the hydrophones XEhrenberg, J.E. and T.W. Steig. 2003. Improved techniques forstudying the temporal and spatial behavior of fish in a fixedlocation. ICES J of Mar. Sci, 60: 700-706.
  • 9. Canary Rockfish – Seattle Aquarium
  • 10. Yellowtail Rockfish – Seattle Aquarium
  • 11. Coho Salmon – Seattle Aquarium
  • 12. The Aquarium’s Wi-Fi was used to transmit the acoustic tag data.This provided real-time 3D fish positions which were displayed onscreens, monitors, laptops and smart phones throughout the Aquarium.
  • 13. Summary ResultsT. Steig AFS 2012 Presentation August 22, 2012
  • 14. Conclusions Over 3,100 people came to HTI and AFS Student’s Fish Fest! event at the Seattle Aquarium in 2011. Three species of fish were acoustically tagged and monitored in 3D in the 120,000 gallon marine WOWW Tank with the 3D position estimates displayed in real-time. Examples of study results presented included:  3D Tracks and Position Densities  Simultaneous Monitoring of Multi-Species  Comparison of Species-Specific Behaviors 3D acoustic tag techniques are ideal for:  Home Range Determinations  Predator-Prey Interactions  Bioenergetics Studies Real-time acoustic tag studies provide a broad range of information in both marine and freshwater environments across large and small spatial scales.T. Steig AFS 2012 Presentation August 22, 2012
  • 15. Final Conclusion:Science + Fish + Beer = 1 Fun Night in Seattle
  • 16. Thank you. c © 2012 Hydroacoustic Technology, Inc.AFS 2012 Presentationby Tracey W. Steigtsteig@HTIsonar.com(206) 633-3383