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Monitoring The Three-Dimensional Movement of Multi-Species
Assemblages 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.
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 Behaviors

T. Steig AFS 2012 Presentation                      August 22, 2012
Live Telemetry Demo at AFS 2007




In 2007, at the Steinhart Aquarium in San Francisco, HTI
demonstrated real-time acoustic tag tracking of alligator gar.
The gar were fed herring which were implanted with acoustic
tags.
The 3D gar positions were shown in real-time on projected
screens near the tank. Animations were created of the 3D
results. For more information regarding this study, see this link:
http://www.htisonar.com/case-studies-alligator-gar.htm
The Seattle Aquarium
Window on Washington
Waters (WOWW) Tank
includes large rock
formations which serve as
habitat for anemones, sea
stars, urchins and coral.

This marine aquarium has
inverted glass planes for
viewing at two different
locations and incorporates
complex rock structures
that made positioning
acoustically-tagged fish in
3D challenging.
Aquatic Environment
WOWW Tank – Designed to replicate the
seascape around Neah Bay on the NW
tip of Washington State.
Capacity
120,000 gallons
Size
Roughly 20 ft by 40 ft by 20 ft
Non symmetrical dimensions, complex
monitoring environment
Species Tracked with Acoustic Tags
Canary 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)
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.                                    x9




T. Steig AFS 2012 Presentation                                                            August 22, 2012
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
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
                                                                        X
Ehrenberg, J.E. and T.W. Steig. 2003. Improved techniques for
studying the temporal and spatial behavior of fish in a fixed
location. ICES J of Mar. Sci, 60: 700-706.
Canary Rockfish – Seattle Aquarium
Yellowtail Rockfish – Seattle Aquarium
Coho Salmon – Seattle Aquarium
The Aquarium’s Wi-Fi was used to transmit the acoustic tag data.
This provided real-time 3D fish positions which were displayed on
screens, monitors, laptops and smart phones throughout the Aquarium.
Summary Results




T. Steig AFS 2012 Presentation   August 22, 2012
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
Final Conclusion:
Science + Fish + Beer = 1 Fun Night in Seattle
Thank you.
                  c




                        © 2012 Hydroacoustic Technology, Inc.
AFS 2012 Presentation
by Tracey W. Steig
tsteig@HTIsonar.com
(206) 633-3383

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

  • 1. Monitoring The Three-Dimensional Movement of Multi-Species Assemblages 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 Behaviors T. Steig AFS 2012 Presentation August 22, 2012
  • 3. Live Telemetry Demo at AFS 2007 In 2007, at the Steinhart Aquarium in San Francisco, HTI demonstrated real-time acoustic tag tracking of alligator gar. The gar were fed herring which were implanted with acoustic tags. The 3D gar positions were shown in real-time on projected screens near the tank. Animations were created of the 3D results. For more information regarding this study, see this link: http://www.htisonar.com/case-studies-alligator-gar.htm
  • 4. The Seattle Aquarium Window on Washington Waters (WOWW) Tank includes large rock formations which serve as habitat for anemones, sea stars, urchins and coral. This marine aquarium has inverted glass planes for viewing at two different locations and incorporates complex rock structures that made positioning acoustically-tagged fish in 3D challenging.
  • 5. Aquatic Environment WOWW Tank – Designed to replicate the seascape around Neah Bay on the NW tip of Washington State. Capacity 120,000 gallons Size Roughly 20 ft by 40 ft by 20 ft Non symmetrical dimensions, complex monitoring environment Species Tracked with Acoustic Tags Canary 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. x9 T. 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 X Ehrenberg, J.E. and T.W. Steig. 2003. Improved techniques for studying the temporal and spatial behavior of fish in a fixed location. 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 on screens, monitors, laptops and smart phones throughout the Aquarium.
  • 13. Summary Results T. 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 Presentation by Tracey W. Steig tsteig@HTIsonar.com (206) 633-3383