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

Location
Washington State (U.S.)
Article
Experimental testing of acoustic alarms (pingers) to reduce bycatch of harbor porpoise, Phocoena phocoena, in the state of Washington
Target catch
Chinook salmon (Oncorhynchus tshawytscha) and sturgeon (Acipenser sp.)
Study Type
Field study in the wild
Effect on target catch
Did not affect target catch
Effect on bycatch species
Did not reduce seal bycatch; Reduced harbor porpoise bycatch
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Phocoena phocoena (Harbor porpoise)
Pinnipeds
Phoca vitulina (Harbor seal)
Fishing Gear
Gillnets and Entangling Nets
Reduction technique
Acoustic deterrent devices