Blar i Articles på emneord "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921"
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A bio-economic analysis of harvest control rules for the Northeast Arctic cod fishery
(Journal article; Peer reviewed, 2012-12-12)Harvest control rules (HCRs) have been implemented for many fisheries worldwide. However, in most instances, those HCRs are not based on the explicit feedbacks between stock properties and economic considerations. This ... -
A new model for simulating growth in fish
(Journal article; Peer reviewed, 2014-01-16)A real dynamic population model calculates change in population sizes indepen- dent of time. The Beverton & Holt (B&H) model commonly used in fish assessment includes the von Bertalanffy growth function which has age or ... -
A rare observation of Atlantic halibut larvae (Hippoglossus hippoglossus) in Skjerstadfjorden, North Norway.
(Journal article; Peer reviewed, 2013-06-28)Four larvae of Atlantic halibut (Hippoglossus hippoglossus) were collected during a larval survey for Atlantic cod (Gadus morhua) in true inshore and shallow locations in the Norwegian fjord system Skjerstadfjorden. This ... -
A review of the battle for food in the Barents Sea: cod vs. marine mammals
(Journal article; Peer reviewed, 2015-03-25)Cod, harp seal and minke whale are the main top predators in the Barents Sea ecosystem. In the last decade, the abundance of cod has increased considerably, and is at a record high level. In spite of this, the growth and ... -
Abundance estimation of Northeast Atlantic mackerel based on tag recapture data - A useful tool for stock assessment?
(Journal article; Peer reviewed, 2010-10)In the present study we utilize tag recapture data to estimate year class abundance and spawning stock biomass of mackerel (Scomber scombrus L.) in the Northeast Atlantic for the period 1986–2008. On average 20,000 jigged ... -
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 ... -
An assessment of the spatial scale of local adaptation in brown trout (Salmo trutta L.): footprints of selection at microsatellite DNA loci
(Journal article; Peer reviewed, 2011-01-12)Local adaptation is considered a paradigm in studies of salmonid fish populations. Yet, little is known about the geographical scale of local adaptation. Is adaptive divergence primarily evident at the scale of regions or ... -
An evaluation of 0-group abundance indices of Barents Sea fish stocks
(Journal article; Peer reviewed, 2009)The International 0-group fish survey in the Barents Sea (1965-2002) aimed to give initial indication of the recruiting year class strengths. Since 2003 the 0-group survey has been a part of a Joint Norwegian-Russian ... -
Antarctic krill swarm characteristics in the Southeast Atlantic sector of the Southern Ocean
(Journal article; Peer reviewed, 2012-09-28)Knowledge about swarm dynamics and underlying causes is essential to understand the ecology and distribution of Antarctic krill Euphausia superba. We collected acoustic data and key environmental data continuously across ... -
Antimicrobial susceptibility of Francisella noatunensis subsp. noatunensis strains isolated from Atlantic cod Gadus morhua in Norway
(Journal article; Peer reviewed, 2012-02-17)A total of 30 isolates of Francisella noatunensis subsp. noatunensis isolated from Atlantic cod Gadus morhua L. were tested for susceptibility, in the form of minimal inhibitory concentration (MIC) values, against the ... -
The Barents Sea capelin stock 1972-1997. A synthesis of results from acoustic surveys
(Journal article; Peer reviewed, 1998-05-15)The abundance of the Barents Sea capelin stock has been monitored using acoustic methods since 1972. Today, 25 years later, it is one of the few stocks within the ICES area for which an annual acoustic stock size estimate ... -
Benefits of threshold strategies and age-selective harvesting in a fluctuating fish stock of Norwegian spring spawning herring Clupea harengus
(Journal article; Peer reviewed, 2005-08-15)The current state of the world’s fisheries resources requires further investigation into the means and methods for sustainable use of fish stocks. In this study, I assess the performance of different harvesting strategies ... -
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. ... -
Biology and population dynamics of the Norwegian spring- spawning herring
(Journal article; Peer reviewed, 1980) -
Biology, exploitation, and management of the northeast atlantic mackrel
(Journal article; Peer reviewed, 1980) -
Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea
(Journal article; Peer reviewed, 2012-03-22)An 0-group fish survey is conducted annually in the Barents Sea in order to estimate fish population abundance. Data on jellyfish by-catch have been recorded since 1980, although this dataset has never been analysed. In ... -
Cascading effects of the ctenophore Mnemiopsis leidyi on the planktonic food web in a nutrient-limited estuarine system
(Journal article; Peer reviewed, 2012-07-24)Increasing biomasses of gelatinous zooplankton presumably have major implications for the structure and function of marine food webs at large; however, current data on lower trophic levels are scarce, as most studies ... -
Change in Fish Community Structure in the Barents Sea
(Journal article; Peer reviewed, 2013-04-29)Change in oceanographic conditions causes structural alterations in marine fish communities, but this effect may go undetected as most monitoring programs until recently mainly have focused on oceanography and commercial ... -
Changes in growth of Northeast Arctic cod in relation to food consumption in 1984-1988
(ICES Marine Science Symposia, Journal article; Peer reviewed, 1991)From 1984 to 1988 the average weight of cod (Gadus morhun) by age group in the Northeast Arctic stock was reduced by about 60% in most age groups. During the same period, the estimated individual food consumption by age ... -
Changes in the relationship between sea temperature and recruitment of cod, haddock and herring in the Barents Sea
(Journal article; Peer reviewed, 2013-06-14)Cod, haddock and herring in the Barents Sea have strongly variable recruitment. For these three stocks, earlier studies have suggested a high correlation between their recruitment and a positive relationship between high ...