Blar i Brage IMR på forfatter "Engås, Arill"
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Flume tank testing of a multiple inner-paneled trawl to reduce loss and clogging of small organisms
Underwood, Melanie J.; Rosen, Shale; Engås, Arill; Hemnes, Terje; Melle, Webjørn; Aasen, Asbjørn (Rapport fra Havforskningen;5-2016, Working paper, 2016-02) -
In situ determination of bottom trawl ground gear contact
Engås, Arill; Ona, Egil; Ramberg, Kjell (ICES CM documents, Working paper, 2001)Exact definition of towed distance with proper ground gear contact is an essential parameter in bottom trawl swept area estimates of fish abundance. Errors in this key parameter may lead to a first order bias in abundance ... -
Inclined water flow and its applications for reduced bycatch in shrimp trawls
Engås, Arill; Gamst, Kjell Arne; Graham, Norman (IMR/PINRO Joint Report Series, Conference object, 2001)The use of the Nordmøre grid in the Pandalus fishery has significantly reduced the bycatch of finfish. Grids operate on physical separation based on size to achieve bycatch reduction. However, problems arise when the size ... -
Inclined water flow and its applications for reduced bycatch in shrimp trawls
Engås, Arill; Gamst, Kjell Arne; Graham, Norman (IMR/PINRO Joint Report Series, Conference object, 2001)The use of the Nordmøre grid in the Pandalus fishery has significantly reduced the bycatch of finfish. Grids operate on physical separation based on size to achieve bycatch reduction. However, problems arise when the size ... -
Kan vi dyrke fjordane våre?
Engås, Arill (Havforskningsnytt, Working paper, 2002) -
MultiSampler gir sikrere bestandsmål
Engås, Arill; Skeide, Roar L. (Havforskningsnytt, Working paper, 1996) -
Near-bottom sampling with bottom and pelagic trawls
Engås, Arill; Godø, Olav Rune (ICES CM Documents;1987/B:15, Working paper, 1987)The Institute of Marine Research, Bergen, has carried out combined bottom trawl and acoustic surveys for cod and haddock in the Barents Sea - Svalbard area since 1981. These investigations have demonstrated clearly that ... -
Ny sensor for nøyaktig måling av botnkontakt og tauetid
Engås, Arill (Havforskningsnytt, Working paper, 2002) -
Nye systemer for å begrense fangstmengde under tråling
Engås, Arill (Havforskningsnytt;Nr. 9 - 2012, Working paper, 2012) -
Preliminary results of investigations on escapement of fish under the fishing line of a Norwegian sampling trawl
Engås, Arill; Godø, Olav Rune (ICES CM Documents;1986/B:30, Working paper, 1986)The Institute of Marine Research, Bergen, has carried out combined bottom trawl and acoustic surveys for cod and haddock in the Barents Sea and the Svalbard areas since 1981. These investigations have clearly demonstrated ... -
Problemstillinger knyttet til et pelagisk trålfiske etter torsk og hyse
Jørgensen, Terje; Valdemarsen, John Willy; Engås, Arill; Aasen, Asbjørn (Rapport fra Havforskningen;Nr. 4-2011, Working paper, 2011-04) -
Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)
Krafft, Bjørn Arne; Krag, Ludvig Ahm; Engås, Arill; Nordrum, Sigve; Bruheim, Inge; Herrmann, Bent (CCAMLR;WG-EMM-16/04, Conference object, 2016) -
Quantifying the Escape Mortality of Trawl Caught Antarctic Krill (Euphausia superba)
Krafft, Bjørn Arne; Krag, Ludvig Ahm; Engås, Arill; Nordrum, Sigve; Bruheim, Yngve; Herrmann, Bent (Journal article; Peer reviewed, 2016-09-13)Antarctic krill (Euphausia superba) is an abundant fishery resource, the harvest levels of which are expected to increase. However, many of the length classes of krill can escape through commonly used commercial trawl mesh ... -
Scale damage and survival of cod and haddock escaping from a demersal trawl
Soldal, Aud Vold; Isaksen, Bjørnar; Marteinsson, Jon Einar; Engås, Arill (ICES CM Documents;1991/B:44, Working paper, 1991)Cod (Gadus morhua L.) and haddock (Melanogrammus aeglefinus L.) escaping through the meshes of a cod-end (135 mm diamond meshes) or through a metal grid sorting device mounted in the foremost part of the cod-end, were ... -
Seismikk reduserer fangstene av torsk og hyse
Engås, Arill; Løkkeborg, Svein; Ona, Egil; Soldal, Aud Vold (Havforskningsnytt, Working paper, 1994) -
Seismikk-skyting skræmer fisk
Engås, Arill; Løkkeborg, Svein; Ona, Egil; Soldal, Aud Vold (Havforskningsnytt, Working paper, 1992) -
Size Selection of Antarctic Krill (Euphausia superba) in Trawls
Krag, Ludvig A.; Herrmann, Bent; Iversen, Svein A.; Engås, Arill; Nordrum, Sigve; Krafft, Bjørn A. (Journal article; Peer reviewed, 2014-08-08)Trawlers involved in the Antarctic krill (Euphausia superba) fishery use different trawl designs, and very little is known about the size selectivity of the various gears. Size selectivity quantifies a given trawl’s ability ... -
A “snowcrab-bag” attached to the fishing line of Campelen 1800 research trawl : Does it affect the catch rates and species composition in the cod end?
Aglen, Asgeir; Pavlenkov, Alexander; Hjelset, Ann Merete; Fuglebakk, Edvin; Engås, Arill (IMR/PINRO Joint Report Series;, Research report, 2019)For monitoring abundance and distribution of snow crab in the Barents Sea, data from the bottom trawl surveys in winter (February) and in autumn (August-September) are used. The data collected in the autumn survey is ... -
Studier av mursteinsmasker i trål, tester med Deep-Vision og in situ overføring fra kamera og trålsonar på tokt med F/F ”Johan Hjort” i 2011
Valdemarsen, John Willy; Engås, Arill; Aasen, Asbjørn; Øvredal, Jan Tore; Rosen, Shale; Bærhaugen, Thor; Sæstad, Arvid (Rapport fra Havforskningen;Nr. 12 - 2012, Working paper, 2012-03) -
Swept area variation with depth and its influence on stratified trawl surveys indices on Arcto-Norwegian cod
Engås, Arill; Godø, Olav Rune (ICES CM Documents;1986/D:18, Working paper, 1986)Stratified trawl surveys have been carried out in the Barents Sea and the Svalbard areas since 1981. Based on the assumption of a constant area swept by the trawl during a standard trawl haul at any depth, swept area ...