Browsing Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) by Title
Now showing items 6-25 of 314
-
Acoustic abundance estimation of the spawning component of the local herring stock in Lindaaspollene, western Norway
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1983)During 1978-1980 yearly acoustic surveys were carried out in the spawning area of a small herring stock in the semi-enclosed bay area Lindaaspollene, approximately 30 km north of Bergen, using the Simrad EY-M echo sounder ... -
Age determination and the growth and age distribution from cementum growth layers of bearded seals at Svalbard
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1973)BENJAMINSEN, T. 1973. Age determination and the growth and age distribution from cementum growth layers of bearded seals at Svalbard. FiskDir. Skr. Ser. HavUnders., 16:159-170. Material for this study was collected ... -
Age, maturity and quality of North Sea herrings : during the years 1910-1913
(Report on Norwegian Fishery and Marine Investigations;vol 3 no 1, Research report, 1917) -
Aggression and growth of Atlantic salmon parr. I. Different stocking densities and size groups
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1986)The aggressive behaviour and growth of salmon parr under crowded rearing conditions was studied at four different densities. One or several fish per aquarium was dominant, displaying a kind of territorial defence and ... -
Aggression and growth of Atlantic salmon parr. II. Different populations in pure and mixed groups
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1986)The aggressive behaviour and growth of different populations of Atlantic salmon parr and the possible effect of fin-clipping on these traits were studied. Each of three 2001 aquaria was stocked with 90 unmarked hatchery ... -
Analysis of empirical observations on the scattering of sound by encaged aggregations of fish
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978) -
Angular measures of dorsal aspect target strength functions of fish
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1980)Three angular measures of dorsal aspect target strength functions in the pitch plane are computed for previously gathered acoustic data on three gadoid fishes, two clupeoid fishes, and mackerel. These measures are the ... -
Animal Plankton of the Norwegian Coast Warers and the Open Sea. I - Production of Calanus finmarchicus (Gunner) and Calanus hyperboreus (Krøyer) in the Lofoten Area
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1934)1) The general part of the present work contains a discussion of the general laws controlling the geographical distribution and the production within a certain marine area of zooplanctonic species, illustrated by ... -
The Annual Phytoplankton Cycle of a Landlocked Fjord near Bergen (Nordåsvatn)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1952)1. Quantitative phytoplankton records for 1941 and 1942 from Nordåsvatn near Bergen were used for a discussion of the annual phytoplankton cycle of this land-locked fjord. 2. Ice covered the surface till late in April ... -
Another modification of the Scholander-Roughton technique: Nitrogen determination in fish blood
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1960) -
Artificial Propagation of Cod - Some recent results of the liberation of larvae
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1963) -
Aspects of the life history of the local herring stock in Lindåspollene, western Norway
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978)LIE, U., DAHL, O. and ØSTVEDT, O.J. 1978. Aspects of the life history of the local herring stock in Lindåspollene, western Norway. Fisk.Dir. Skr. Ser. Hav.Unders., 16: 369-404. Gill net and purse seine samples were ... -
The autumn spawning group of herring in the northeastern North Sea
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969) -
Avoidance of petroleum hydrocarbons by the cod (Gadus morhua)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1986)The experimental fish were held in two different aquaria, one with three and one with two compartments. Water containing "water soluble fraction" of Fuel Oil No. 2 was introduced in one of the compartments. By means of ... -
Balanus balanoides (L.) on the Atlantic coast of France: Further observations on the small isolated population at the southern limit of its distribution at Arcachon
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)Balanus Balanoides is present as a small, isolated and even locally restricted population on the west coast of France at Arcachon. Observations of the past few years indicate an increase in numbers. Growth and survival ... -
A barents sea fish resources and migration model - developed with special reference to oil activity
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1990)A model is developed on the basis of distributions of fish resources and temperatures observed during surveys in the Barents Sea over the period 1983-1987. It is found to be useful (although not detailed enough, due to ... -
The behaviour of Norway lobster towards baited creels and size selectivity of creels and trawl
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1986)The behaviour of Norway lobster (Nephrops norvegicus L.) towards baited creels was studied by underwater television at three different localities. A typical nocturnal activity pattern was observed. Most of the individuals ... -
Beskatningen av skreibestanden - Hva merkeforsøk i Lofoten viser, foreløpig rapport
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1953)Since 1947 annual tagging experiments have been carried out on the cod occurring on the Lofoten Banks during the spawning season. We want inter alia to examine the extent to which the fishermen exploit this stock of ... -
Bestemmelse av kalsium i sjøvann
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1947)Av de undersøkelser som her er foretatt framgår det at kalsium i sjøvann kan bestemmes på følgende måte: 100 ml sjøvann tas ut og fortynnes til 200 Ml, tilsettes 10 ml kons. saltsyre og 65 ml 10 % ammoniumoksalat. Ved ... -
The biology of salmon from Southern Norway : Fluctuations in age and growth
(Fiskeridirektoratets skrifter, Serie Havundersøkelser;vol 9 no 5, Research report, 1949)