Blar i Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) på tittel
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Distribution, abundance and mortality of young and adolescent Norwegian spring spawning herring (Clupea harengus Linné) in relation to subsequent year-class strength
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1970)1. The distribution of young and adolescent herring in coastal and offshore waters of northern Norway has been investigated for the 1959- 1965 year-classes by combined acoustic surveys and fishing experiments. 2. In the ... -
Diving observations on Barents Sea capelin at the spawning grounds off northern Norway
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1973)During the spring of 1971 divers made observations at the spawning grounds of the Barents Sea capelin. Large masses of capelin eggs were found at two localities: Loppa, (35-70 m depth) and Nordvågen (12-18 m depth). The ... -
The duration of the first two yolk sac stages in herring (Clupea Harengus L.) larvae
(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 ... -
Ecological investigations on the spawning grounds of the Barents Sea capelin
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1975)SÆTRE, R. and GJØSÆTER, J. 1975. Ecological investigations on the spawning grounds of the Barents Sea capelin. FiskDir. Skr. Ser. HavUnders., 16: 203-227. A programme to study the reproduction of the Barents Sea capelin ... -
The effect of fishing on size composition and sex ratio of offshore lobster stocks
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)The lobster fishery in the offshore waters of southern New England is in the early stages of development. The assumption that canyon fishing grounds closest to shore are the most heavily fished was supported by a lower ... -
Effects of ocean thermal structure on fish finding with sonar
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. The width of the sound beam trapped in the surface channel depends, besides on MLD and INGRAD, also on SST. The latter relation is brought about by nonlinearity in the sound speed dependence on temperature and depth ... -
Einar Koefoed and his work as zoologist during the practical-scientific fishery investigations in northern waters from 1923-38
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1963) -
Estimates of pup production, age at first parturition and natural mortality for hooded seals in the west ice
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1984)An analysis of the population of hooded seals breeding in the West Ice near Jan Mayen was carried out on the basis of catch statistics for 1946-1978 and age samples comprising a total of 5 094 four years old and older ... -
Estimates of stock size and reproduction of the Barents Sea capelin in 1970-1972
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1973)DRAGESUND, O., GJØSÆTER, J. and MONSTAD, T. 1973. Estimates of stock size and reproduction of the Barents Sea capelin in 1970-1972. FiskDir. Skr. Ser. HavUnders., 16: 105-139. The distribution and migration of young ... -
Experiments with the Clarke-Bumpus Plankton Sampler and with a Plankton Pump in the Lofoten Area in Northern Norway
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1948) -
The Exploitation of the Spiny Dogfish (Squalus acanthias L.) in European Waters
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1964)The present paper is a short account of the state of the stock in recent years of Squalus acanthias in European waters. The basic material is the catch statistics from Bulletin Statistique (ICES), the Norwegian spur-dog ... -
Factors influencing the Size of the Year Classes in the Arcto-Norwegian Tribe of Cod
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1957)1. The quantitative occurrence of eggs and larvae of the Arcto-Norwegian cod in the coastal and bank areas of northern Norway during the years 1948-1956 has been studied. 2. There is no correlation between the abundance ... -
Factors influencing year-class strength of Norwegian spring spawning herring (Clupea harengus Linné)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1970)1. Variation in year-class strength of Norwegian spring spawning herring is analysed in relation to the structure and the size of the spawning stock, the location and the time of spawning and environmental conditions during ... -
Faktorer av betydning for fiskeeggenes og fiskeyngelens oppvekst
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1952)During the last 10 years we have been experimenting in the laboratory at the Flødevigen Sea-Fish Hatchery with the rearing of several species of salt-water fishes. The intention has been to bring about better methods ... -
Fecundity and egg size of spring spawning Barents Sea capelin
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1973)Fecundity of Barents Sea capelin was studied in 1971 and 1972. No differences were found between these two years. The regression line log F = 3.4871 x log L - 0.2049 was fitted to the whole material. This is in good ... -
Feeding rates of cetacea
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. The feeding rate of a whale is defined as the weight of daily food ingested expressed as percentage of body weight. Records of daily rations of Delphinoidea (porpoises and dolphins) in captivity allow calculation of ... -
Field studies on the behaviour of whiting (Gadus merlangus L.) towards baited hooks
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1986)The responses of whiting to a test line with baited hooks were studied during three cruises in the Trondheimsfjord area in three seasons. The activity of the fish directed towards the baited hooks increased at sunrise ... -
A fishing experiment with multifilament, monofilament and monotwine gill nets in Lofoten during the spawning season of Arcto-Norwegian cod in 1974
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1979)A fishing experiment with multifilament, monofilament, and monotwine gill nets in Lofoten during the spawning season of Arcto-Norwegian cod in 1974. FiskDir. Skr. Ser. HavUnders., 16: 531-550. From 6 February to 30 March ... -
Fishing experiments in Norwegian fjords
(Report on Norwegian fishery and marine investigations, Research report, 1900) -
Fiske Indsamlede Under "Michael Sars"s Togter I Nordhavet 1900-1902
(Report on Norwegian Fishery and Marine Investigations, Research report, 1905)