Blar i Brage IMR på forfatter "Fossum, Petter"
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A study of first feeding herring (Clupea harengus L.) larvae during the period 1985- 1993
Fossum, Petter (ICES CM Documents;1993/H:21, Working paper, 1993)Hatching and distribution of first feeding larvae of Norwegian spring spawning herring have been monitored on the Norwegian shelf in March and April since 1985. During this period the spawning stock increased from 0.5 ... -
Aspects of recruitment with examples from commercially important fish stocks in Norwegian waters
Fossum, Petter (Doctoral thesis, 1994) -
Beskrivelse av miljø og levende marine ressurser i havområdene ved Jan Mayen
Fossum, Petter; Mork, Kjell Arne; Tverberg, Vigdis; Boitsov, Stepan; Heldal, Hilde Elise; Bagøien, Espen; Rønning, Jon; Slotte, Aril; Vollen, Tone; Wienerroither, Rupert; Dahle, Geir; Buhl-Mortensen, Pål; Øien, Nils; Øigård, Tor Arne; Fauchald, Per (Rapport fra Havforskningen;Nr. 16 - 2012, Working paper, 2012-05)Resultatene fra et tokt med ”G.O. Sars” på Jan Mayenryggen i oktober 2011 blir sammenstilt med våre andre overvåkingsdata og info fra litteraturen. Hensikten med prosjektet er å beskrive miljø og marine ressurser på sokkelen ... -
Biologiske ressurser i området som er aktuelt som trasé for kraftkabler fra Norge til kontinentet
Sundt, Rolf C.; Bergstad, Odd Aksel; Fossum, Petter; Ona, Egil (Interne notat, Working paper, 1995)Rapporten er utarbeidet på oppdrag fra Statkraft Engineering, i anledning planleggingen av linjenett for overføring av elektrisk kraft fra Norge til kontinentet. Utredningen er en del av arbeidet med å vurdere konsekvensene ... -
A case study on the distribution of cod larvae and availability of prey organisms in relation to physical processes in Lofoten. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
Ellertsen, Bjørnar; Fossum, Petter; Solemdal, Per; Sundby, Svein; Tilseth, Snorre (Flødevigen rapportserie, Conference object, 1984)The distribution of cod larvae and copepod nauplii off the Lofoten islands was studied in the years 1979-82. The highest concentrations of cod larvae and copepod nauplii were found in the Austnesfjord, Hølla-Henningsvær ... -
The condition of the herring larvae off Western Norway in the period 1985-87. [HELP 31]
Fossum, Petter (help, Research report, 1990)A herring larval sampling program has been carried out off Western Norway in the period 1985-1988. This paper deals with results from 1985- 1987. Larval growth and condition have been studied both with living and formaldehyd ... -
The 'critical period' concept - a century of recruitment research
Ellertsen, Bjørnar; Fossum, Petter; Solemdal, Per; Sundby, Svein (Others, 1995-11-23) -
Dagsonelesning og silderekruttering
Fossum, Petter (Havforskningsnytt, Working paper, 1992) -
Digestion rate of food particles in the gut of larval herring (Clupea harengus L)
Fossum, Petter (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1983)Laboratory experiments with herring larvae (Clupea harengus L.) from the local stock in Lindåspollene, north of Bergen, Norway, were performed in the spring of 1978 and 1979. Digestion rates of copepod nauplii and polychaet ... -
Distinguishing between spring and autumn spawned herring from daily increments, a preliminary report
Fossum, Petter; Moksness, Erlend (ICES CM Documents;1988/H:15, Working paper, 1988)Otoliths from Norwegian Spring Spawning herring larvae, collected on a cruise in May 1985 and North Sea Autumn Spawned herring larvae, collected on a cruise in Desember 1987, were examined for daily increments. A greater ... -
Distribution and abundance of Norwegian spring spawning herring larvae on the Norwegian shelf in March - April 2006
Stenevik, Erling Kåre; Fossum, Petter ([Toktrapport/Havforskningsinstituttet];Nr. 4 - 2006, Working paper, 2006) -
Distribution, drift and condition of herring larvae off western Norway in 1985
Bjørke, Herman; Fossum, Petter; Sætre, Roald (ICES CM Documents;1986/H:39, Working paper, 1986)The recruitment to the Norwegian spring-spawning herring have during the last twenty years been on a very low level. However, the size of the spawning stock has increased in recent years and in 1983 a rich year class ... -
Distribution, drift and condition of herring larvae off western Norway in 1987
Sætre, Roald; Bjørke, Herman; Fossum, Petter (ICES CM Documents;1988/H:14, Working paper, 1988)Introduction: After 1959 the Norwegian spring-spawning herring have been spawning along the western coast of Norway north of 62° N. During the sixties the stock was reduced to a minimum. In the recent years there has ... -
"Do most fish produce many tiny offspring?"
Fossum, Petter (Fisken og havet, Research report, 1995)This lecture is the chosen one given in connection to my Dr. phil. dissertation in December 1994. It is to a large extent built upon the work of E. K. Balon particularly ; Balon (1975a), Balon (1975b), Balon (1981), Balon ... -
The duration of the first two yolk sac stages in herring (Clupea Harengus L.) larvae
Fossum, Petter (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1986)Artifically fertilized and naturally spawned herring eggs from the local herring stock in Lindåspollene, north of Bergen, Norway, were hatched at 9°C in 1978 and at 6°C in 1979. The purpose was to calculate the duration ... -
Earlier hatching and slower growth, a key to survival in the early life history of Norwegian spring spawning herring
Slotte, Aril; Husebø, Åse; Berg, Florian; Stenevik, Erling Kåre; Folkvord, Arild; Fossum, Petter; Mosegaard, Henrik; Vikebø, Frode Bendiksen; Nash, Richard David Marriott (Journal article; Peer reviewed, 2018)Faster growth in fish larvae is often associated with enhanced survival, and here we investigated whether surviving juvenile Norwegian spring spawning herring Clupea harengus L. generally come from a pool of fast-growing ... -
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 ... -
Estimated hatching date and growth history of Norwegian spring spawning herring (Clupea harengus L.) from otolith data of larvae of the 1990 yearclass
Fossum, Petter; Moksness, Erlend (ICES CM Documents;1991/H:14, Working paper, 1991)This study was performed on herring larvae of the 1990 yearclass of Norwegian spring spawners. The larvae were caught in May on the Norwegian shelf in the area from 64 °N - 69 °N. There was one size group of larvae with ... -
Feeding conditions of Arcto-Norwegian cod larvae compared to the Rothschild-Osborn theory on small-scale turbulence and plankton contact rates. [HELP 29]
Sundby, Svein; Fossum, Petter (help, Research report, 1989)Data on first feeding Arcto-norwegim cod larvae in Lofoten, northern Norway, sampled during the period 1974 - 1984, are examined to verify the theory on the influence of small-scale turbulence on the contact rate between ... -
Feeding conditions of north-east Arctic (Arcto-Norwegian) cod larvae compared to the Rothschild-Osborn theory on small-scale turbulence and plankton contact rates
Sundby, Svein; Fossum, Petter (ICES CM Documents;1989/G:19, Working paper, 1989)Data on first feeding North-east arctic cod larvae in Lofoten, sampled during the period 1976 - 1984, are examined to verify the theory on the influence of microturbulence on the contact rate between predator and prey ...