Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Bergstad, Odd Aksel"
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Acoustic survey of deep-water fish of the Skagerrak
Bergstad, Odd Aksel; Gordon, John D.M.; Dalen, John (ICES CM Documents;1992/H:15, Working paper, 1992)Introduction: Two fish species, the greater silver smelt Argentina silus and the roundnose grenadier Coryphaenoides rupestris, are highly abundant in the deep-water areas of the Skagerrak. Since the 1970s, a small aimed ... -
Fish communities on the slop of the eastern Norwegian Sea
Bergstad, Odd Aksel; Bjelland, Otte; Gordon, John D.M. (ICES CM Documents;1998/O:30, Working paper, 1998)Bortom trawl data from the depth interval 300-2050 m on the slope off Norway were analysed to study distribution of fish biomass and the associated species assemblages. It is hypothesised that the pronounced hydrographic ... -
Return of Norwegian spring spawning herring (Clupea harengus L.) to historical spawning grounds off southwestern Norway
Bergstad, Odd Aksel; Røttingen, Ingolf; Toresen, Reidar; Johannessen, Arne; Dragesund, Olav (ICES CM Documents;1991/H:24, Working paper, 1991)From the mid-1940s to mid-1960s a northward displacement of the spawning areas of the Norwegian Spring Spawning Herring was observed. Further retraction of the population from traditional feeding and spawning grounds ... -
Seasonal variation of the diet of cod (Gadus morhua L.) and haddock (Melanogrammus aeglefinus L.) at a herring spawning ground
Høines, Åge S.; Bergstad, Odd Aksel; Albert, Ole Thomas (ICES CM Documents;1992/G:9, Working paper, 1992)The paper describes diet variation of cod and haddock at a spawning ground of the Norwegian Spring Spawning Herring. Samples were collected at bimonthly intervals through a one-year period, including during and following the ... -
The CoML pilot project MAR-ECO: Goals, status, and significance for ICES
Bergstad, Odd Aksel; Falkenhaug, Tone (ICES CM Documents;2002/L:10, Working paper, 2002)The Mid-Atlantic ridge and adjacent waters are targeted in an international ecosystem study under the Census of Marine Life programme. This pilot project shall gather new knowledge on biodiversity, distribution patterns, ... -
Trophic ecology of deepwater fishes associated with the continental slope of the eastern Norwegian Sea
Bergstad, Odd Aksel; Bjelland, Otte (ICES CM Documents;1998/O:51, Working paper, 1998)In June 1995 and 1996 demersal fishes on the continental slope of the eastem Norwegian Sea were sampled to study distribution patterns and community structure. The diets of the more abundant slope species were characterised ...