Blar i Articles på utgivelsesdato
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Rapport om forsøksfiske etter kolmule vest av De Britiske Øyer i februar-mai 1973
(Journal article, 1973)The experiments were carried out with four boats. Two of a different size working as one boat midwater trawlers and two as a twoboat midwater trawl unit. It is concluded that the spawning stock is dense enough for commercial ... -
Age, growth, and mortality of the myctophid fish, Benthosema glaciale (Reinhardt), from western Norway
(Journal article; Peer reviewed, 1973-05-18)Age and growth of Benthosema glaciale collected by midwater trawl in western Norway have been studied. Otoliths were used for age determination. The mean annual mortality in age groups I to IV was 52%. Older specimens were ... -
The food of the myctophid fish, Benthosema glaciale (Reinhardt), from western Norway
(Journal article; Peer reviewed, 1973-05-18)Stomach contents were studied in Benthosema glaciale taken by midwater trawl in a fjord in western Norway. Copepods constitute the most important part of the identifiable stomach contents. Euphausiids were found during all ... -
Target strength measurements of fish
(Journal article; Peer reviewed, 1977)During the summer of 1971, target strength measurements of fish were made at two frequencies, 38 kHz and 120 kHz. The relationships between dorsal aspect target strength and fish length were worked out for four species. ... -
Echo abundance indices of 0-group fish in the Barents Sea, 1965-1972
(Journal article; Peer reviewed, 1977)In order to obtain estimates of year class strength of 0-group fish, joint international surveys have been conducted each year since 1965 in the Barents Sea. The density of fish has been estimated by visual grading of the ... -
Some results of abundance estimation studies with echo integrators
(Journal article; Peer reviewed, 1977)Two examples of acoustic fish stock abundance estimation are given. The first is the estimation of the exploited Barents Sea capelin stock; the second is measurement of the size of the unexploited blue whiting stock. Surveys ... -
The effect of recent changes in the North Sea mackerel fishery on stock and yield
(Journal article; Peer reviewed, 1978)The paper deals with biological aspects and exploitation of the mackerel (Scomber scombrus) stocks occurring in the North Sea. The state of stocks and exploitation in the North Sea area are investigated on the basis of ... -
Uutnytta ressursar i havet
(Journal article, 1979) -
Ressurssituasjonen for norsk fiske
(Journal article, 1979) -
Forskar - fiskar, lodde og sild
(Journal article, 1979) -
Bestandsundersøkelser og forslag til regulering av loddefisket i området lsland-Grønland-Jan Mayen i 1979
(Journal article, 1979-10-15)Sommeren 1978 begynte norske ringnotfartøyer å fiske lodde i området mellom Jan Mayen og Grønland. Dette er lodde som gyter ved Island om vinteren, og som beiter i området mellom Island, Grønland og Jan Mayen om sommeren. ... -
Importance of the swimbladder in acoustic scattering by fish: A comparison of gadoid and mackerel target strengths
(Journal article; Peer reviewed, 1980)Previous determinations of the swimbladder contribution to the fish backscattering cross section have been hindered by ignorance of the acoustic boundary conditions at the swimbladder wall. The present study circumvents ... -
Torsk, hyse og havforskarar
(Journal article, 1980)Trålfisket etter torsk og hyse i Barentshavet har vore uvanleg rikt hittil i år, og dette har overraska mange på bakgrunn av dei låge fangstkvotane for 1980. Har havforskarane tatt feil i vurderingane sine av bestanden? I ... -
Averaging of fish target strength functions
(Journal article; Peer reviewed, 1980)A general model for averaging the acoustic target strength functions of fish is stated in calculable form. It accounts for the influences of the distribution of generally coupled spatial and orientation states of fish, ... -
Biology, exploitation, and management of the northeast atlantic mackrel
(Journal article; Peer reviewed, 1980) -
Comment on ''Some frequencies of underwater noise produced by fishing boats affecting albacore catch'' [J. Acoust. Soc. Am. 66, 296–299 (1979)]
(Others, 1980)An alternative explanation for the observations analyzed by Erickson is offered. Differences in catch-related success of boats participating in the West Coast Albacore fishery are attributed to the low-frequency content ... -
Biology and population dynamics of the Norwegian spring- spawning herring
(Journal article; Peer reviewed, 1980)