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Experimental testing of acoustic alarms (pingers) to reduce bycatch of harbor porpoise, Phocoena phocoena, in the state of Washington

Study Type
Field study in the wild
Location
Washington State
Target catch
Salmon & sturgeon
Effect on bycatch species
Reduced harbor porpoise bycatch
Effect on target catch
Did not affect target catch
Bycatch species
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Reactions of harbor porpoises Phocoena phocoena and herring Clupea harengus to acoustic alarms

Study Type
Field study in the wild
Location
Canada
Target catch
Herring
Effect on bycatch species
Harbor porpoise avoided area
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Reactions of harbor porpoises Phocoena phocoena and herring Clupea harengus to acoustic alarms

Study Type
Field study in the wild
Location
Canada
Target catch
Herring
Effect on bycatch species
Harbor porpoise avoided area
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Reactions of harbor porpoises Phocoena phocoena and herring Clupea harengus to acoustic alarms

Study Type
Field study in the wild
Location
Canada
Target catch
Herring
Effect on bycatch species
Harbor porpoise avoided area
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Reactions of harbor porpoises Phocoena phocoena and herring Clupea harengus to acoustic alarms

Study Type
Field study in the wild
Location
Canada
Target catch
Herring
Effect on bycatch species
Harbor porpoise avoided area
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
92.4% of porpoise groups avoided pinger equipped floatlines
Effect on target catch
n/a
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
92.4% of porpoise groups avoided pinger equipped floatlines
Effect on target catch
n/a
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
92.4% of porpoise groups avoided pinger equipped floatlines
Effect on target catch
n/a
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
92.4% of porpoise groups avoided pinger equipped floatlines
Effect on target catch
n/a
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
Did not significantly reduce interactions with gear
Effect on target catch
n/a
Bycatch species
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Passive acoustic deterrents
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
Did not significantly reduce interactions with gear
Effect on target catch
n/a
Bycatch species
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Passive acoustic deterrents
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
Did not significantly reduce interactions with gear
Effect on target catch
n/a
Bycatch species
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Passive acoustic deterrents
Fishing Gear
Gillnets

Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers

Study Type
Field study in the wild
Location
Canada
Target catch
n/a
Effect on bycatch species
Did not significantly reduce interactions with gear
Effect on target catch
n/a
Bycatch species
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Passive acoustic deterrents
Fishing Gear
Gillnets
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