Combining Acoustic Doppler Current Profilers (ADCPs) with Acoustic Arrays to Enhance Interpretation of Fish Movements. Roger A. Rulifson, Jennifer Roger A. Rulifson, Jennifer Cudney-Burch, Ryan Mulligan Cudney-Burch, Ryan Mulligan 1, 1, and Andrea Dell’Apa and Andrea Dell’Apa Institute for Coastal Science and Policy Institute for Coastal Science and Policy East Carolina University East Carolina University 1 Queen’s University, Kingston, Ontario Queen’s University, Kingston, Ontario Mid-Atlantic Regional Association Coastal Ocean Observing System Baltimore, November 1, 2012
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Combining Acoustic Doppler Current Profilers (ADCPs) with Acoustic Arrays to Enhance Interpretation of Fish Movements. Roger A. Rulifson, Jennifer Cudney-Burch,
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Combining Acoustic Doppler Current Profilers (ADCPs) with
Acoustic Arrays to Enhance Interpretation of Fish
Movements.Roger A. Rulifson, Jennifer Cudney-Burch, Roger A. Rulifson, Jennifer Cudney-Burch,
Ryan MulliganRyan Mulligan1, 1, and Andrea Dell’Apaand Andrea Dell’ApaInstitute for Coastal Science and PolicyInstitute for Coastal Science and Policy
A peak in the detections at a monthly tidal minimum( 8 sharks, 733 detections)
February 2010
# of detections
February 2010
1-week example
Tid
al Height (m
) February 14 – 21, 2010
Tid
al Height (m
) February 14 – 21, 2010
March 1-7, 2010T
idal H
eight (m)
Biological Observations• 1/3 of the tagged sharks moved around Cape Hatteras• Redetection rates are very high (80%) compared to
conventional floy tag studies (1-4%)• Sharks encountered the array multiple times within a
season (2-8 separate days)• Residence time varied (10 minutes – 24 hours; multiple
days in a row)• Crepuscular onshore / offshore movements ?????• Hatteras Bight is an important migration pathway for
species of concern (Atlantic sturgeon & sand tiger sharks)
Remaining Challenges• Behavioral data needs to be coupled with environmental
data for context – WHY do these animals move when they do?
• Hatteras Bight is very dynamic – need to combine multiple types of environmental data together to understand the system
• Better methods for array deployment including receivers, ADCPs, and passive acoustic devices (high energy, commercial fishing)
Acoustic Wave GliderWeather Station
Water Current Speed & Direction;Wave Direction; Depth
Salinity & Temperature
Acoustics –Active & Passive
Acknowledgements• North Carolina Sea Grant• Dewey Hemilright (F/V TarBaby)• Chris Hickman (F/V BoutTime)• Coastal Resources Management Ph.D
Program, ECU• ICSP, ECU• Office of Diving / Water Safety, ECU• Department of Biology, ECU• Department of Physics, ECU• Department of Geography, ECU• U.S. Fish and Wildlife Service• Atlantic States Marine Fisheries
Commission• Island Hide-A-Way Campground
(Buxton, NC)• N.C. Division of Marine Fisheries• Oden’s Dock Marina (Hatteras, NC)• Avon Seafood (Hatteras, NC)• Vemco sales and support team• Knauss Fellowship Team / NOAA /
National Sea Grant Office
• Hans Vogelsong, ECU• Lauriston King• John Rummel• Steve Sellers• Eric Diaddorio• Mike Baker• Mark Keusenkothen• Sara Miribilio• Cecilia Krahforst• Andrea del’Apa• Katie Kleber• Lyndell Bade• Dan Furinsky• Tim Wamer• Jim Saupe• Gene Oakley• Chris Bonnerup• Garry Wright• Chuck Bangley• Craig Harms,DVM (NCSU)• Dorcas O’Rourke, DVM (ECU IACUC)• Tom Savoy (CTDEP)• Dewayne Fox (DSU)• Bill Hoffman (Mass. DMF)• Paul Music (WHOI)
And the friends, family, and colleagues whose names don’t fit!