Blar i Published in cooperation with others på forfatter "Ellertsen, Bjørnar"
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The effect of biological and physical factors on the survival of Arcto-Norwegian cod and the influence on recruitment variability
Ellertsen, Bjørnar; Fossum, Petter; Solemdal, Per; Sundby, Svein; Tilseth, Snorre (PINRO-IMR Symposium, Conference object, 1987)Data from egg and larval field investigations h the Lofoten area are used together with long time series of data on temperature and zooplankton in Lofoten and abundance indices of Arcto-Norwegian cod. The importance ... -
Feeding and vertical distribution of cod larvae in relation to availability of prey organisms
Ellertsen, Bjørnar; Solemdal, Per; Sundby, Svein; Tilseth, Snorre; Westgård, Trond; Øiestad, Victor (Conference object, 1979)The year-class strength of the Arcto-Norwegian cod stock varies on an annual basis by a factor of about 20:1 and is determined at the 0-group stage (about 1/2 year old cod). Since the number of eggs spawned far exceeds the ... -
Food and feeding conditions and prey selectivity of herring (Clupea harengus) through its feeding migrations from Costal areas of Norway to the Atlantic and Arctic watermasses of the Nordic Seas
Dalpadado, Padmini; Dommasnes, Are; Ellertsen, Bjørnar; Melle, Webjørn (ICES CM documents, Working paper, 1998) -
Food and feeding conditions of herring Clupea harengus in the Norwegian Sea
Dalpadado, Padmini; Melle, Webjørn; Ellertsen, Bjørnar; Dommasnes, Are (ICES CM Documents;1996/L:20, Working paper, 1996)The feeding ecology of herring was studied using samples collected during cruises in 1994 and 1995. Investigations were carried out in the Møre shelf region off western Norway where the major spawning of herring occurs, ... -
The influence of light and food density on the feeding success in larvae of cod (Gadus morhua L.); field and laboratory observations
Ellertsen, Bjørnar; Moksness, Erlend; Solemdal, Per; Strømme, Tore; Tilseth, Snorre; Øiestad, Victor (ICES CM Documents;1976/F:34, Working paper, 1976) -
Plankton biomass, production and variability in the Norwegian Sea ecosystem
Melle, Webjørn; Rey, Francisco; Ellertsen, Bjørnar; Skjoldal, Hein Rune (ICES CM documents, Working paper, 2004) -
Regional dynamics of Calanus in the Norwegian Sea in response to ocean climate in 1997
Slagstad, Dag; Tande, Kurt; Melle, Webjørn; Ellertsen, Bjørnar; Carlotti, Francois (ICES CM Documents;2000/M:20, Working paper, 2000)A coupled 3D hydrodynamic and ecological model has been set up for the Norwegian Sea (i.e. SINMOD). The hydrodynamic model uses the z-coordinates in the vertical direction. The horizontal grid point distance is 6.67 km ... -
Spawning strategy and a mechanism for adaptive larval production in Arcto-Norwegian cod
Solemdal, Per; Ellertsen, Bjørnar (ICES CM Documents;1990/L:100, Working paper, 1990)The Arcto-Norwegian cod is spawning in the temperature stable Atlantic water, and the eggs ascend into the more temperature variable coastal water. Changes in time of peak spawning, up to 10 days within the last 60 ... -
A study on survival and growth of fish larvae in a large basin, related to feeding conditions : A preliminary study on herring larvae (Clupea harengus L.) and fry
Ellertsen, Bjørnar; Solemdal, Per; Tilseth, Snorre; Øiestad, Victor (ICES CM Documents;1975/E:44, Working paper, 1975) -
The detection of larval fish food particles by an in situ particle counter, and monitoring of the particle density and distribution in first feeding areas.
Tilseth, Snorre; Ellertsen, Bjørnar (ICES CM Documents;1981/L:15, Working paper, 1981) -
Vertical distribution and feeding of cod larvae in relation to occurrence and size of prey organisms
Ellertsen, Bjørnar; Moksness, Erlend; Solemdal, Per; Strømme, Tore; Tilseth, Snorre; Westgård, Trond; Øiestad, Victor (ICES CM Documents;1977/L:33, Working paper, 1977)