Acronym NA
Category
Fisheries
Title Utprøving av skjermingsteknologi mot hval i linefiske - Testing of protection technology against whales in line fishing Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Jan Erik Dyb Coordinator email jan.erik.dyb@kystverket.no
Coordinator institution
NA
Institutions involved
NA
Start year 2004 End year 2004 Funding (€) € NA Website https://www.fhf.no/prosjekter/prosjektbasen/341021/ Summary Since the beginning of the 1990s, the Norwegian longline fleet has increasingly struggled with sperm whale interactions (Physeter macrocephalus) while fishing off Greenland. Several Norwegian liner operators have taken up this the problem with the Fishing Boat Owners' Association, and given the expression that this is a problem that must be solved if the line fishing off Greenland is to continue. The fishing boat owners' association therefore took the initiative to take a closer look on what is known and what solutions seem to be relevant. The autoline vessel M / S Leinebris was selected to test boat for testing equipment and to observe sperm whales. Two different shielding technologies based on sound was tried out, where one type was attached to the line (fingers) and the other was lowered from the boat (scrambler). An effect of the equipment against the sperm whale was found. It may be that the pings have a limited effect, but the possible effect of the pinger on the blue halibut must first be described before conclusions can be drawn. The scrambler had a clearer effect, but this gradually diminished and can in many ways be said to end up with no effect at all. It was intended that the scrambler should form a zone that the sperm whale does not could see in, but this was not achieved. It seemed that the whale was most were these sounds. It was taken based on the fact that the whale used a volume of 180 dB during the search for food, but there are many indications that it can use a lot higher volume. Both technologies may be relevant to work on. The effect on the scrambler must be increased considerably. This can be done by increasing the overall volume, or by focusing and sending down the power and sound along the line. This will raise environmental issues, and may mean that you are forced to look at other options to prevent the whale from catching blue halibut
Keywords
Gear selectivity;
Environmental impact;
Fishing technology;
Cetaceans;
Gear technology;
Bycatch;
Longline fishing;
Marine Region
43
Northeast Greenland (27.XIVa)
1
Marine Region Map
