Non-lethal deterrance at Bonneville&Ballard.pdf - Mediate.com

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Acoustic barriers = Acoustic Deterrent DevicesAcoustic Deterrent Devices (ADD)• 205 decibel, 15 kHz frequency acoustic projectors installed atfishway entrances• March – May 2006• ADDs turned on at 0500 hrs on hazing days, turned off at 2000hrs at the end of each 2-day treatment• No significant effects on salmon passage
Other barriers ie Smith Root electric shock gridDoes it impact fish passage?Will it work on CA sea lions ?Where can it be deployed?
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Non-lethal deterrance at Bonneville&Ballard.pdf - Mediate.com

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