Browsing Havforskningsinstituttet by Subject "pelagic trawl"
Now showing items 1-9 of 9
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A three level pelagic trawl for near surface sampling of juvenile fish
(ICES CM Documents;1993/B:19, Working paper, 1993)In the northeast Atlantic Ocean catch rates of juvenile fish from pelagic trawls are used to calculate indices of relative abundance which are applied as a first indication of year class strength. A major constraint for ... -
Near-bottom sampling with bottom and pelagic trawls
(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 ... -
Pelagic Fish Behaviour During Trawl Sampling Off Angola
(Journal article; Peer reviewed, 2011-12-16)Large sardinella (Sardinella maderensis and Sardinella aurita) in warm waters off the coast of Africa are known to be a challenge for pelagic trawl sampling, for example during acoustic surveys for abundance estimation. ... -
Pelagisk tråling etter torskefisk : Pelagic trawling for cod
(Havforskningsnytt;Nr. 5 - 2010, Working paper, 2010)Pelagic trawling does no harm to benthic fauna and reduces bycatches, and is sometimes an alternative to bottom trawling when fishing for cod. Selection abilities are the same as for bottom trawling. A newly developed ... -
Problemstillinger knyttet til et pelagisk trålfiske etter torsk og hyse
(Rapport fra Havforskningen;Nr. 4-2011, Working paper, 2011-04) -
Report of the Study Group on the Bycatch of Salmon in Pelagic Trawl Fisheries (SGBYSAL) [8-11 February 2004 Bergen, Norway]
(ICES CM documents, Working paper, 2005) -
Report of the Study Group on the Bycatch of Salmon in Pelagic Trawl Fisheries (SGBYSAL) [9-12 March 2004 Bergen, Norway]
(ICES CM documents, Working paper, 2004)Section 1. Gives terms of reference, lists the six participants from the three nations represented at the meeting (Ireland, Norway and Russia). Background for the Study Group was the observed large number of post-smolts ... -
Sampling herring in the Norwegian Sea by pelagic trawl
(ICES CM Documents;1997/W:21, Working paper, 1997)When the stock of Norwegian spring-spawning herring is distributed in the Norwegian Sea in summertime, pelagic trawl sampling may be rather challenging because of substantial variation in vertical distribution (from ... -
Vertical distribution of cod, haddock and redfish; Impact on bottom trawl and acoustic surveys in the Barents Sea
(ICES CM Documents;1997/Y:16, Working paper, 1997)At a selected location in the Barents Sea acoustic observations, bottom- and pelagic trawl catch data were collected over a 10 day period. A large proportion of the fish were in the acoustic dead zone during the sampling ...