Browsing ICES CM documents authored by IMR scientists (1949-2011) by Title
Now showing items 21-40 of 3138
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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 ... -
A new system for automatic STD data acquisition from randomly positioned observers
(ICES CM Documents;1991/C:21, Working paper, 1991)The Inst. of Marine Researche in Bergen has since 1935 on a regulary basis acquired data from fixed hydrographic stations on the Norwegian coast. The data are collected by local residents via water samplers and reversing ... -
A PC-based echo integrator system appliable for school structure analyzis
(ICES CM Documents;1991/B:43, Working paper, 1991)A low cost system for integration of echo signals on a PC has been developed. The system calculates the area backscattering strength in surface and bottom layers, and is designed both for the purpose of conventional ... -
A pilot study of halibut larvae (Hippoglossus hippoglossus L.) reared from start feeding to metamorphosis on diets of wild zooplankton and Artemia
(ICES CM Documents;1990/F:52, Working paper, 1990)Halibut larvae ready to start feed were placed in two outdoor tanks of 7 m^3. The larvae in one tank were fed wild zooplankton throughout the whole period, and the larvae in the other tank were fed wild zooplankton from ... -
A possible reorganization of the assessments in the northern part of the ICES area
(ICES CM Documents;1985/Assess:21, Working paper, 1985) -
A preliminary Investigation on Shelf Edge and Deepwater Fixed Net Fisheries to the West and North of Great Britain, Ireland, around Rockall and Hatton Bank.
(ICES CM documents;2005/ N:07, Working paper, 2005)Since the mid-1990s, a fleet of up to 50 vessels have been conducting a gillnet fishery on the continental slopes to the West of the British Isles, North of Shetland, at Rockall and Hatton bank. These vessels, though ... -
A preliminary note on the ecology of eggs and larvae of the Atlantic halibut (Hippoglossus hippoglossus)
(ICES CM Documents;1982/G:9, Working paper, 1982) -
A preliminary report on the migration and recruitment to the commercial stock of Greenland halibut (Reinhardtius hippoglossoides) in the Svalbard area.
(ICES CM Documents;1985/G:18, Working paper, 1985) -
A preliminary report on the natural occurrence and ecology of Atlantic halibut (Hippoglossus hippoglossus) postlarvae and young immature stages
(ICES CM Documents;1987/F:38, Working paper, 1987)Surveys designed to capture Atlantic halibut, Hippoglossus hippoglossus, postlarvae and young immatures were carried out around Sørøya in North Norway in 1985, 1986 and 1987. Hydrographical conditions and the current ...