Browsing Brage IMR by Author "Holst, Jens Christian"
Now showing items 1-20 of 37
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Back-calculated length at age in Norwegian spring-spawning herring (Clupea harengus L.) : Estimating the common intercept or origin by tuning back-calculated length frequencies to observed ones
Holst, Jens Christian (ICES CM Documents;1996/D:9, Working paper, 1996)In Norwegian spring-spawning herring the common intercept of the back-calculating formula, as estimated by linear regression of the fish-scale relationship, grosssly overestimated the back-calculated length frequencie ... -
Behaviour of Atlantic salmon (Salmo salar L.) recorded by data storage tags in the NE Atlantic – implications for interception by pelagic trawls
Holm, Marianne; Jacobsen, Jan Arge; Sturlaugsson, Johannes; Holst, Jens Christian (ICES CM documents, Working paper, 2006)In a project carried out in the Nordic Seas (Northeast Atlantic) in 2002 - 2004, 413 Atlantic salmon (Salmo salar L.) were tagged with data storage tags (DST) either logging temperature and depth (StarOddi, Milli) or ... -
Cannibalism as a factor regulating year class strength in the Norwegian spring-spawning herring stock
Holst, Jens Christian (ICES CM Documents;1992/H:14, Working paper, 1992)The feeding area of the Norwegian spring-spawning herring stock is at present situated in the north-eastern parts of the Norwegian Sea. The eastern parts of the feeding area overlaps with the distribution of drifting ... -
Capture and handling of fish for electronic tagging - a review and a new non-intrusive capture method.
Holm, Marianne; Arnold, Geoff P.; Holst, Jens Christian; Midling, Kjell (ICES CM documents, Working paper, 1999)While tagging procedures are described in details the capture and handling of experimental fish prior to tagging is not given the same attention in most papers. However, traumas that originate from the capture and handling ... -
Cod, haddock, saithe, herring, and capelin in the Barents Sea and adjacent waters: a review of the biological value of the area
Olsen, Erik; Aanes, Sondre; Mehl, Sigbjørn; Holst, Jens Christian; Aglen, Asgeir; Gjøsæter, Harald (Journal article; Peer reviewed, 2009-10-09)Cod, haddock, saithe, herring, and capelin are the most important fish species in the Barents Sea and adjacent waters. Ecosystem-based management requires species-specific knowledge of the biological value and vulnerability ... -
Cod, haddock, saithe, herring, and capelin in the Barents Sea and adjacent waters: a review of the biological value of the area
Olsen, Erik; Aanes, Sondre; Mehl, Sigbjørn; Holst, Jens Christian; Aglen, Asgeir; Gjøsæter, Harald (Journal article; Peer reviewed, 2009-10-09)Cod, haddock, saithe, herring, and capelin are the most important fish species in the Barents Sea and adjacent waters. Ecosystem-based management requires species-specific knowledge of the biological value and vulnerability ... -
Cruise report [19/7 - 15/8, 1996]
Monstad, Terje; Ellertsen, Bjørnar; Holst, Jens Christian ([Toktrapport/Havforskningsinstituttet];, Working paper, 1996) -
Distribution of herring (Clupea harengus) and zooplankton in the Norwegian Sea, as determined from generalised additive models
Olsen, Esben Moland; Melle, Webjørn; Kaartvedt, Stein; Holst, Jens Christian; Mork, Kjell Arne (ICES CM documents, Working paper, 2005)We analyse the variability in the distribution and feeding of the Norwegian spring-spawning herring in the period from 1995 to 2004, using survey data collected throughout the Norwegian Sea each year in May - June. The ... -
Distribution of Norwegian spring-spawning herring and mackerel in the Norwegian Sea in late summer, 1991
Holst, Jens Christian; Iversen, Svein A. (ICES CM Documents;1992/H:13, Working paper, 1992)A pairtrawl survey was carried out in the Norwegian Sea during July - August 1991 to map the distribution of pelagic fish. Herring were caught throughout most of the surveyed area, with the largest concentrations observed ... -
The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis
Gilbey, John; Utne, Kjell Rong; Wennevik, Vidar; Beck, Alexander Christian; Kausrud, Kyrre Linné; Hindar, Kjetil; de Leaniz, Carlos Garcia; Cherbonnel, Corrine; Coughlan, Jamie; Cross, Tom F.; Dillane, Eileen; Ensing, Dennis; García-Vázquez, Eva; Hole, Lars Robert; Holm, Marianne; Holst, Jens Christian; Jacobsen, Jan Arge; Jensen, Arne Johan; Karlsson, Sten; Ó Maoiléidigh, Niall; Mork, Kjell Arne; Nielsen, Einar Eg; Nøttestad, Leif; Primmer, Craig R.; Prodöhl, Paulo; Prusov, Sergey; Stevens, Jamie R.; Thomas, Katie; Whelan, Ken; McGinnity, Philip; Verspoor, Eric (Peer reviewed; Journal article, 2021)The survival of Atlantic salmon (Salmo salar), an increasingly rare anadromous species, has declined dramatically during its marine phase, with disproportionate impacts on the poorly understood early post-smolt period. ... -
Establishment of new wintering areas in herring co-occur with peaks in recruit to spawner ratio
Huse, Geir; Fernö, Anders; Holst, Jens Christian (ICES CM documents;2009/H:11, Working paper, 2009)During late summer, Norwegian spring-spawning herring migrate to wintering areas, where they remain for about five months in dense aggregations. First-time spawning cohorts typically adopt the overwintering area of the ... -
Establishment of new wintering areas in herring co-occurs with peaks in the ‘first time/repeat spawner’ ratio
Huse, Geir; Fernö, Anders; Holst, Jens Christian (Journal article; Peer reviewed, 2010-06-23)Norwegian spring spawning (NSS) herring migrate to wintering areas in late summer and remain there for about 5 mo in dense aggregations. First-time spawning cohorts typically adopt the wintering area of the spawning stock. ... -
High prevalence of viral haemorrhagic septicaemia virus (VHSV) in Norwegian spring‑spawning herring
Johansen, Renate; Bergh, Øivind; Modahl, Ingebjørg; Dahle, Geir; Gjerset, Britt; Holst, Jens Christian; Sandlund, Nina (Journal article; Peer reviewed, 2013-03-25)Viral haemorrhagic septicaemia (VHS) is a viral disease known to cause high mortality in many teleost species, both in wild and farmed populations. The effects of this virus infection on the population dynamics of Atlantic ... -
Hindrer Nordhordlandsbroen smoltens utvandring?
Holst, Jens Christian; Skilbrei, Ove (Havforskningsnytt, Working paper, 2007)Den dramatiske nedgangen av laksebestanden i Vosso har brakt flere institusjoner sammen for å undersøke betydningen av menneskeskapte forhold for denne utviklingen. De siste årene har søkelyset i hovedsak vært rettet mot ... -
International acoustic herring survey: Norwegian sea [1/5 - 1/6, 1997]
Holst, Jens Christian ([Toktrapport/Havforskningsinstituttet];, Working paper, 1997-06-01) -
International acoustic herring survey: Norwegian sea [28/4 - 2/6, 1999]
Holst, Jens Christian; Ona, Egil ([Toktrapport/Havforskningsinstituttet];, Working paper, 1999) -
Laks i Norskehavet. Fiskeforsøk og registreringer av laks i Norskehavet og tilgrensende områder juli 1991 - august 1995
Holm, Marianne; Holst, Jens Christian; Hansen, Lars Petter (Fisken og havet, Research report, 1996)Since 1991, Atlantic salmon has been caught in the Norwegian Sea during trawl surveys camed out by the Institute of Marine Research, Bergen. For the first time it has been possible to study the feeding habits, distribution, ... -
A length-based hypothesis for feeding migrations in pelagic fish
Nøttestad, Leif; Giske, Jarl; Holst, Jens Christian; Huse, Geir (Journal article; Peer reviewed, 1999)We evaluated the costs and benefits of long-distance horizontal migration by pelagic planktivores, Atlantic herring (Clupea harengus), blue whiting (Micromesistius poutassou), mackerel (Scomber scombrus), and capelin (Mallotus ... -
Numerical domination and herring migrations
Huse, Geir; Fernö, Anders; Holst, Jens Christian (ICES CM documents, Working paper, 2006)There is accumulating evidence in favour of the hypothesis that herring migrations are influenced by social learning. The “adopted-migrant hypothesis” postulates that recruit spawning herring learn migration patterns by ... -
Observations of abundance, stock composition, body size and food of postsmolts of Atlantic salmon in the NE Atlantic during summer
Holst, Jens Christian; Hansen, Lars Petter; Holm, Marianne (ICES CM Documents;1996/M:4, Working paper, 1996)Postsmolt Atlantic salmon were caught during pelagic trawl surveys in the Norwegian Sea in July-August, 1991 and 1995, and off the Hebrides in May-June 1995. Using the swept area technique abundance estimates of postmolts ...