Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Løkkeborg, Svein"
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Catches of Greenland halibut (Reinhardtius hippoglossoides) in ghost fishing gillnets on the Norwegian continental slope
Humborstad, Odd-Børre; Furevik, Dag M.; Løkkeborg, Svein; Hareide, Nils Roar (ICES CM Documents;2000/J:8, Working paper, 2000)Catches in deliberately “lost” gillnets were studied during a ten-day cruise conducted at Storegga 70 nm off the coast of mid-Norway in July 2000. Gillnet fleets were deployed at depths of between 537 and 677 m, and soak ... -
Effect of attractant distribution on catch rate and size selection of Norway lobster caught by pots
Bjordal, Åsmund; Løkkeborg, Svein; Skeide, Roar L. (ICES CM Documents;1991/B:45, Working paper, 1991)In comparative fishing trials with Norway lobster (Nephrops norvegicus) pots, the attractant property of an aqueous extract of mackerel was tested against that of natural mackerel bait. The catch rate of the natural ... -
Effects of a geophysical survey on catching success in longline fishing
Løkkeborg, Svein (ICES CM Documents;1991/B:40, Working paper, 1991)The effects on longline catches of a geophysical survey conducted during the winter fishery for cod (Gadus morhua) were studied. Spatial extent of the effects was investigated by comparing the catch rates of longlines ... -
Effects of fishing strategy on relative selectivity in trawls, longline and gillnets
Huse, Irene; Løkkeborg, Svein; Soldal, Aud Vold (ICES CM Documents;1996/B:23, Working paper, 1996)Exploitation of fish stocks is dependent on effort, catchability, the selectivity of the gear used, and the fishermen's choice of time and place. A full-scale fishing experiment was conducted in February 1996 at the coast ... -
Effects of setting time, setting direction and soak time on longline catch rates
Løkkeborg, Svein; Pina, Teresa (ICES CM Documents;1996/B:34, Working paper, 1996)Most studies of factors affecting catching efficiency and selectivity in longlining have focused on various gear parameters (mainline and snood material, hook design and size, rigging) and on the bait (type and size), ... -
Fishing experiments with an alternative longline bait based on nylon bags
Løkkeborg, Svein (ICES CM Documents;1987/B:19, Working paper, 1987)This report describes two fishing trials using an alternative longline bait, one in the fishery for torsk and ling, the other in the fishery for cod and haddock. A bait based on fine-meshed nylon bags as reinforcement ... -
Improved catch rates and selection of Norway lobster (Nephrops norvegicus L.) by controlled release of fluid bait extract in pot fishing
Bjordal, Åsmund; Løkkeborg, Svein (ICES CM Documents;1992/B:14, Working paper, 1992)The effect of controlled release of fluid mackerel extract as bait in Norway lobster pots was tested in comparative fishing trials. Compared with natural mackerel bait, pots with extract release rates above 6 ml/h had ... -
Oil production structures in the North Sea as fish aggregating devices
Brønstad, Oddvar; Humborstad, Odd-Børre; Jørgensen, Terje; Løkkeborg, Svein; Svellingen, Ingvald; Soldal, Aud Vold (ICES CM documents, Working paper, 1998)The paper deals with a study aimed at investigating whether underwater structures from decommissioned oil platforms in the North Sea can be used as artificial fish reefs or protection habitats for fish. The experimental ... -
Reduced bycatch of red king crab (Paralithodes camtschatica) in the cod gillnet fisheries in northern Norway: Fishing trials with norsel mounted gillnets
Godøy, Hallvard; Furevik, Dag M.; Løkkeborg, Svein (ICES CM documents, Working paper, 2000)Bycatch of red king crab (Paralithodes camtschatica) in stationary fishing gears, q&ally gillnets, is an increasing problem to the inshore fishermen in the northern part of Norway (Finnmark county). The results are large ... -
Review and evaluation of three mitigation measures - bird-scaring line, underwater setting and line shooter - to reduce seabird bycatch in the Norwegian longline fishery
Løkkeborg, Svein (ICES CM documents, Working paper, 2000)Seabirds scavenge baits from the hooks of commercial longlines, resulting in incidental seabird mortality and bait loss. As interactions between seabirds and longline fishing may cause decline in seabird populations and ... -
Size selective effects of a plastic body on longline hooks
Løkkeborg, Svein; Bjordal, Åsmund; Skeide, Roar L. (ICES CM Documents;1991/B:46, Working paper, 1991)The potential for improving size selectivity of longlines by using a plastic body attached to the hook shank was tested in a fishing trial for tusk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus). ... -
Synergistic effects of different baits on the same hook in the longline fishery for hake (Merluccius merluccius) and torsk (Brosme brosme)
Franco, Jose M.; Bjordal, Åsmund; Løkkeborg, Svein (ICES CM Documents;1987/B:39, Working paper, 1987)The effects of a combination of different baits on the same hook were tested in two different situations. A bait combination of sardine (Sardina pilchardus) and mackerel (Scomber scombrus) was used to catch hake (Merluccius ... -
Testing of a new hook design (E-Z-Baiter) through comparative longline fishing trials
Skeide, Roar L.; Bjordal, Åsmund; Løkkeborg, Svein (ICES CM Documents;1986/B:25, Working paper, 1986) -
Vulnerability to predation of small cod (Gadus morhua) that escape from a trawl
Løkkeborg, Svein; Soldal, Aud Vold (ICES CM Documents;1995/B:15, Working paper, 1995)Studies of the vulnerability to gear damage of fish that have been caught in a trawl but have escaped through the codend meshes have focussed on determining survival rates. This study examines the risk of predation in ...