Browsing Published in cooperation with others by Title
Now showing items 17-36 of 3534
-
A biotest system for optimalization of environmental parameters for production of halibut fry
(ICES CM Documents;1987/F:21, Working paper, 1987)A system for controlled testing of different environmental parameters in seawater was made. Both the biotest system and an experimental setup using larvae of the Atlantic Halibut (Hippoglossus hippoglossus L.) are described. -
A combined fish larval, phytoplankton and oceanographic survey in the Skagerrak and the Kattegat in April 1983
(ICES CM Documents;1983/L:26, Working paper, 1983) -
A comparison between three Atlantic salmon river stocks; using classical population genetics, differences in life history traits and performance in sea ranching
(ICES CM Documents;1997/P:13, Working paper, 1997)Characterisation of stocks is essential for fisheries and environmental management in order to conserve genetic diversity. However, classical populationgenetic methods frequently fail to document stock differences. In ... -
A comparison of biological trends from four marine ecosystems: synchronies, differences, and commonalities
(ICES CM documents;2007/D:09, Working paper, 2007) -
A comparison of community and trophic structure in five marine ecosystems based on energy budgets and system metrics
(ICES CM documents;2007/D:11, Working paper, 2007)As part of the international MENU collaboration, energy budget models for five marine ecosystems were compared to identify differences and similarities in trophic and community characteristics across ecosystems. We examined ... -
A comparison of growth rate of halibut larvae (Hippoglossus hippoglossus L.) fed wild zooplankton and enriched Artemia
(ICES CM Documents;1990/F:60, Working paper, 1990)Halibut larvae at an age of 267 day degrees post hatching, were reared through first feeding, outdoors in 100 l plastic bags. There were three feeding regimes: wild zooplankton, Artemia enriched on the algae Isochrysis ... -
A cross-ecosystem comparison of temporal variability in recruitment of functionally analogous fish stocks
(ICES CM documents;2007/D:10, Working paper, 2007)As part of the international MENU collaboration, variability in temporal patterns of recruitment and spawning stock were compared among functionally analogous species from four marine ecosystems including the Gulf of ... -
A field intercomparison between a miniature CTD and the Neil Brown serial 1223 CTD- profiler
(ICES CM Documents;1989/C:24, Working paper, 1989)During a survey in Lofoten in may 1989 a new miniature CTD which is being developed at the Inst. of Marine Research was mounted to the ship`s ordinary serial 1223 CTD- profiler on 10 different CTD- stations. Using the ... -
A field intercomparison between an acoustic current profiler / ADCP and two Savonius type current meters
(ICES CM Documents;1990/C:30, Working paper, 1990)During an introductory experiment in Lofoten May 1990 data from a vessel mounted ADCP on an anchored research vessel were intercompared with corresponding data from two anchored rotor current meters in a region where the ... -
A framework for improving accuracy in fisheries data used in stock assessments
(ICES CM documents;2008/N:27, Working paper, 2009) -
A genetic marker for artificially reared cod (Gadus morhua L.)
(ICES CM Documents;1987/F:22, Working paper, 1987)Artificially reared cod at the Aquaculture Station Austevoll on the west coast of Norway, were screened for genetic markers by using biopsies of white muscle, individual tags and enzyme genotype as determined by starch ... -
A method of observing the spawning behaviour of farmed and wild salmonids in a natural stream habitat
(ICES CM Documents;1993/M:21, Working paper, 1993)When farmed fish escape from farms, they may compete with wild individuals for a number of resources, such as food, spawning sites, and mates. As a part of a larger study on genetic impact from farmed fish on wild ... -
A method to estimate the annual larval production of the Norwegian spring-spawning herring (Clupea harengus L.)
(ICES CM Documents;1997/BB:1, Working paper, 1997)A comprehensive survey in the larval distribution area of Norwegian spring-spawning herring along the Norwegian west coast was carried out annually by the Institute of Marine Research, Bergen in the years 1986-1990. ... -
A method to reduce survey bottom trawl variability
(ICES CM Documents;1991/B:39, Working paper, 1991)A technique for limiting the variability of trawl doorspread is described. In addition, modifications of trawling technique which enable the doors to stay upright and maintain constant ground contact under different ... -
A model simulating the effect of sampling strategy on stock assessment of gadoids in sub-areas I and II
(ICES CM Documents;1986/G:69, Working paper, 1986)In the northeast Atlantic, management advice for fisheries is usually based on Virtual Population Analysis, yield per recruit, and predictions of catch and biomass. For these calculations, age distributions and weigth-at-age ... -
A modular family of miniature instruments for simple acquisition and in field processing of oceanographic data
(ICES CM Documents;1981/C:10, Working paper, 1981)The paper describes a general-system for design of oceanographic instruments.. The system uses a standard mechanical housing and a v~riety of compatible electronic units which can be plugged into the hausing in a few ... -
A multiple approach to behaviour studies of salmon reared in marine net pens
(ICES CM Documents;1988/F:15, Working paper, 1988)The behaviour of Atlantic salmon in culture was lnvestigated by various techniques with the ultimate goal of characterlzing the behaviour typical for a situation with rapid growth. Differences in behaviour between and ... -
A new 3 axis current speed sensor for measurements of microstructure velocities
(ICES CM Documents;1985/C:15, Working paper, 1985) -
A new miniature instrument for in situ measuring, processing, recording and display of oceanographic properties
(ICES CM Documents;1987/C:6, Working paper, 1987)The paper describes the design philosophy and functions of a new general purpose oceanographic instrument which is presently being tested as a prototype. The instrument combines established oceanic sensors with ... -
A new radio link telemetry positioning system, experiences from tracking of fish and crustaceans
(ICES CM Documents;1993/B:23, Working paper, 1993)Telemetry positioning systems based on hydrophone arrays have been used for different tracking applications. The main improvement of this new system is the wire-less transmission of signals from hydrophone - radio buoys ...