Blar i Brage IMR på forfatter "Bergstad, Odd Aksel"
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Marin makro- og megafauna i Grenlandsfjordene, og næringsvalg til torsk, skrubbe, sjøørret og pelagisk fisk
Bergstad, Odd Aksel; Knutsen, Jan Atle (Fisken og havet, Research report, 2004)New site-specific information on occurrence and composition of macro- and megafauna, and trophic ecology of target species was required as basis for analyses of trophic transfer of contaminants in this heavily polluted ... -
Micronekton and pelagic fishes in fjords on the Norwegian Skagerrak coast in winter
Bergstad, Odd Aksel; Torstensen, Else; Bøhle, Bjørn (Fisken og havet, Research report, 1996)Information on the species composition, distribution patterns and food-web of micronekton and pelagic fish communities of fjords on the Norwegian Skagerrak coast is assembled based on data from February 1993-1995 ... -
Multinational large scale krill synoptic survey in CCAMLR Area 48 in 2019-survey plan and protocol for consideration by SG-ASAM 2018
Krafft, Bjørn Arne; Bergstad, Odd Aksel; Knutsen, Tor; Skaret, Georg; Macaulay, Gavin (CCAMLR;SG-ASAM-18/07, Research report, 2018)The objective for the Multinational Large-Scale Krill Synoptic Survey in CCAMLR area 48 3 in 2019 is to provide an updated estimate of the biomass of Antarctic krill (Euphausia 4 superba) used in models to estimate sustainable ... -
Notes on age determination, size and age structure, longevity and growth of co-occurring macrourid fishes
Bergstad, Odd Aksel; Hunter, Rebecca H.; Cousins, Nicola J.; Bailey, David M.; Jørgensen, Terje (Peer reviewed; Journal article, 2021)Nineteen species of the deep-water fish family Macrouridae inhabit the Mid-Atlantic Ridge (MAR) of the North Atlantic. Size and age structure, longevity and length at age were explored for seven of the more abundant species: ... -
Numerous Sublinear Sets of Holes in Sediment on the Northern Mid-Atlantic Ridge Point to Knowledge Gaps in Understanding Mid-Ocean Ridge Ecosystems
Vecchione, Michael; Bergstad, Odd Aksel (Peer reviewed; Journal article, 2022)On 13 July 2004, during an expedition exploring biodiversity along the northern Mid-Atlantic Ridge, an ROV dive recorded videos of numerous sublinear sets of holes in sediment at ca. 2,082 m depth. The location was north ... -
Population genetic structure in a deepwater fish Coryphaenoides rupestris: patterns and processes
Knutsen, Halvor; Jorde, Per Erik; Bergstad, Odd Aksel; Skogen, Morten D. (Journal article; Peer reviewed, 2012-07-24)We observed significant genetic structure in a widely distributed North Atlantic demersal deepwater fish, the roundnose grenadier Coryphaenoides rupestris (Pisces: Macro - uridae). The overall estimate of genetic ... -
Protocols for trawl sampling, recording of biological data, and hydrography for the 2019 international synoptic krill survey in Area 48
Knutsen, Tor; Krafft, Bjørn Arne; Renner, Angelika; Skaret, Georg; macaulay, gavin; Bergstad, Odd Aksel (CCAMLR;WG-EMM-18/23, Research report, 2018)Experience gained through participation in international programmes like BIOMASS and the CCAMLR 2000 Survey has demonstrated that standardization of equipment and methods is one of the most crucial steps for any successful ... -
A relationship between the number of growth increments on the otoliths and age of larval and juvenile cod, Gadus morhua L. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
Bergstad, Odd Aksel (Flødevigen rapportserie, Conference object, 1984)A study of the relationship between the number of growth increments on the otoliths and age was based on larval and juvenile cod, Gadus morhua L., from laboratory and pond reared populations. Lapilli were larger than ... -
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 ... -
Seamounts in the OSPAR maritime area - from species to ecosystems
Kutti, Tina; Windsland, Kristin; Broms, Cecilie; Falkenhaug, Tone; Biuw, Martin; Thangstad, Trude Hauge; Bergstad, Odd Aksel (Rapport fra havforskningen;2019 - 42, Research report, 2019)This report was prepared by the Institute of Marine Research, Norway, for the Norwegian Environment Agency, as part of Norway´s contribution to OSPAR. The report summarizes the latest knowledge on species and habitats ... -
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 ... -
Smørflyndre - en lite utnyttet ressurs i Skagerrak
Bergstad, Odd Aksel; Tveite, Stein (Havforskningsnytt, Working paper, 1993) -
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, ... -
Toktrapport [20/10 - 23/10, 1992]
Bergstad, Odd Aksel ([Toktrapport/Havforskningsinstituttet];, Working paper, 1992-12-16) -
Toktrapport [20/8 - 2/9, 1996]
Bergstad, Odd Aksel ([Toktrapport/Havforskningsinstituttet];, Working paper, 1996) -
Toktrapport [22/11 - 29/11, 1997]
Bergstad, Odd Aksel; Høines, Åge S. ([Toktrapport/Havforskningsinstituttet];, Working paper, 1997-11-29) -
Toktrapport [23/2 - 2/3, 1993]
Bergstad, Odd Aksel ([Toktrapport/Havforskningsinstituttet];, Working paper, 1993-04-01) -
Toktrapport [25/2 - 28/2, 1992]
Bergstad, Odd Aksel ([Toktrapport/Havforskningsinstituttet];, Working paper, 1992-03-24) -
Toktrapport [25/3 - 1/4, 1998]
Bergstad, Odd Aksel ([Toktrapport/Havforskningsinstituttet];, Working paper, 1998-04-01) -
Toktrapport [25/3 - 3/4, 1999]
Bergstad, Odd Aksel; Høines, Åge S. ([Toktrapport/Havforskningsinstituttet];, Working paper, 1999-04-03)