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

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Citation: Koschinski, S. & Culik, B., 1997. Deterring harbour porpoise from gillnets: observed reactions to passive reflectors and pingers. SC/48/SM14. Report of the International Whaling Commission 47, ps 659?668.
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Summary:

Harbor porpoises (Phocoena phocoena) in British Columbia, Canada avoid experimental gillnet float lines with pingers.

Harbor porpoise (Phocoena phocoena) in British Columbia, Canada did not avoid a barrier consisting of passive acoustic deterrents.
Field Studies:
Location Fishing gear Reduction technique Bycatch species Effect on bycatch species Catch Effect on target catch Type
Canada Gillnets Acoustic pingers Small Cetaceans (maximum length < 7.5 meters) Harbor porpoise avoid gear Trout In the wild
Canada   Passive acoustic deterrents Small Cetaceans (maximum length < 7.5 meters) Harbor porpoise did not avoid gear Trout In the wild