Browsing Brage IMR by Author "Toresen, Reidar"
Now showing items 21-40 of 64
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Havets ressurser og miljø 2006
Iversen, Svein A.; Fossum, Petter; Gjøsæter, Harald; Skogen, Morten D.; Toresen, Reidar (Fisken og havet, særnummer;1-2006, Research report, 2006-03) -
Havets ressurser og miljø 2007
Skogen, Morten D.; Gjøsæter, Harald; Toresen, Reidar; Robberstad, Yvonne (Fisken og havet, særnummer;1-2007, Research report, 2007-03) -
Havets ressurser og miljø 2007
Skogen, Morten D.; Gjøsæter, Harald; Toresen, Reidar; Robberstad, Yvonne (Fisken og havet, særnummer;1-2007, Research report, 2007-03) -
Inter-calibration of participating vessels in the ICES coordinated surveys of North Sea herring
Simmonds, E. John; Toresen, Reidar; Pedersen, Jan Per; Götze, Eberhard (ICES CM Documents;1998/OPEN:23, Working paper, 1998)Summary: Three pairwise acoustic inter-calibrations of the performance of EK500 scientific echosounders were carried out in July 1997. The first inter-calibration was carried out at about 57 40'N by OE by GO Sars and ... -
Kolmula - rik ressurs med store utfordringer
Toresen, Reidar (Havforskningsnytt, Working paper, 2004) -
Krise for silda i Nordsjøen
Toresen, Reidar (Havforskningsnytt, Working paper, 1996) -
Length and age at maturity of Norwegian spring-spawning herring for the year-classes 1959 -61 and 1973 -78
Toresen, Reidar (ICES CM Documents;1986/H:42, Working paper, 1986)The age and length at maturity is calculated for the six year-classes, 1973-78. The age at maturity is also calculated for the year-classes 1959-61. The two periods are caracterized by great differences in stock abundance ... -
Long term changes of growth and maturation in the Norwegian spring spawning herring
Toresen, Reidar (PINRO-IMR Symposium, Conference object, 1990)Two periods with great differences i n year class abundance and recruitment where chosen for growth and maturation studies, 1950 - 1960 and 1973 - 1983. In the first period, the mean year class strength at 3 years was ... -
Miljøinformasjon i bestandsvurdering og rådgivning
Huse, Geir; Bogstad, Bjarte; Hauge, Kjellrun Hiis; Korsbrekke, Knut; Loeng, Harald; Michalsen, Kathrine; Skagen, Dankert W.; Stiansen, Jan Erik; Sundby, Svein; Svendsen, Einar; Tjelmeland, Sigurd; Toresen, Reidar (Fisken og havet, Research report, 2007)This report summarizes the work of an internal working group appointed by the Institute of Marine Research's management group to evaluate inclusion of environmental parameters in stock evaluation. The report discusses ... -
Modelling age-dependent natural mortality of juvenile Norwegian spring-spawning herring (Clupea harengus L.) in the Barents Sea
Barros, P. de; Toresen, Reidar (PINRO-IMR Symposium, Conference object, 1995)Understanding the patterns of mortality in the juvenile stages is essential for improving current stock assessment procedures. A crucial aspect is at which stage in the life cycle of fish is year-class strength determined. ... -
Nordsjøsild - kritisk utvikling i bestandssituasjonen
Toresen, Reidar (Havforskningsnytt, Working paper, 1994) -
Norsk vårgytende sild i store svingninger fra 1907-2000
Toresen, Reidar (Havforskningsnytt, Working paper, 2000) -
Nye begreper for å beskrive tilstand og høstningsnivå av fiskebestander
Toresen, Reidar (Havforskningsnytt, Working paper, 2004) -
Observational insights into chlorophyll distributions of subtropical South Indian Ocean eddies
Dufois, Francois; Hardman-Mountford, Nick J.; Fernandes, Michelle; Wojtasiewicz, Bozena; Shenoy, Damodar; Slawinski, Dirk; Gauns, Mangesh; Greenwood, Jim; Toresen, Reidar (Peer reviewed; Journal article, 2017) -
Predation by juvenile herring (Clupea harengus L.) on Barents Sea capelin (Mallotus villosus Muller) larvae
Huse, Geir; Toresen, Reidar (PINRO-IMR Symposium, Conference object, 1995)In years with high abundance of juvenile Norwegian spring spawning herring in the Barents sea, the year-class strength of capelin has frequently been observed to be poor. It has therefore been suggested that predation ... -
Predation on the eggs of Norwegian spring-spawning herring at a spawning ground outside the westcoast of Norway in 1981
Toresen, Reidar (ICES CM Documents;1985/H:55, Working paper, 1985)Predation on the eggs of demersal spawners has been reported several times, and findings of haddock feeding on capelin or herring eggs is a well known phenomenon. A spawning ground where spawning has been detected through ... -
Reactions of herring to trawling noise
Ona, Egil; Toresen, Reidar (ICES CM Documents;1988/B:36, Working paper, 1988)The reaction of herring during pelagic trawl sampling has been studied by use of a high-frequency scanning sonar mounted on the headline of the trawl. The difficulties of obtaining high catch rates on shallow herring ... -
Recruitment indices of Norwegian spring-spawning herring for the period 1965 -1984 based on the international 0-group fish surveys
Toresen, Reidar (ICES CM Documents;1985/H:54, Working paper, 1985)The trawl data from the International 0-group fish surveys in the Barents Sea are analyzed. The fishing powers of the participating vessels are estimated and corrected for. A relative index of year class strength is ... -
Report on an inter-ship calibration between the research vessels: 21/6 - 22/6, 1993
Toresen, Reidar; Dahl, Martin ([Toktrapport/Havforskningsinstituttet];, Working paper, 1993-06-24) -
Ressursoversikt 1997
Toresen, Reidar (Fisken og havet, særnummer;1-1997, Research report, 1997-03)