ICES CM documents authored by IMR scientists (1949-2011): Recent submissions
Now showing items 1101-1120 of 3138
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Results of stratified trawl surveys for shrimps (Pandalus borealis) in the Barents Sea and the Svalbard region in 1988
(ICES CM Documents;1988/K:18, Working paper, 1988)Results of stratified random bottom trawl survey in the Barents Sea in April - May and the Svalbard region in July august 1988 are described. However, the strata south of Bear Island and the northern part of the Barents ... -
Report of the Workshop on Methods of Fish Stock Assessment [Reykjavik, 6 -12 July, 1988]
(ICES CM Documents;1988/Assess:26, Working paper, 1988)Introduction: For the purposes of this report, the meaning of "fish stock assessment" is restricted to any procedure by which the historical and current state of a fish stock is estimated. This definition includes no ... -
Report on herring acoustic surveys in northern and central North Sea during summer 1987
(ICES CM Documents;1988/H:37, Working paper, 1988)Acoustic surveys covering the Northern and Central North Sea were carried out by Scottish and Norwegian vessels during the period 24 June to 11 August. The estimated biomass of mature herring was 817 000 tonnes. For ... -
Distribution and migration of the 1983 year class of Norwegian spring spawning herring in the period July 1987 - August 1988
(ICES CM Documents;1988/H:41, Working paper, 1988)From ao wide distribution on the Norwegian coastal banks between 65°N and 69°N in June-July 1987 the herring of this year class accumulated in an area west of the Lofoten Island in August 1987, and migrated into the ... -
Optimization of purse seines by large meshed sections and low lead weight. Theoretical considerations, sinking speed measurements and fishing trials.
(ICES CM Documents;1988/B:25, Working paper, 1988)Theoretical considerations on material requirements and sinking speed by use of different mesh size and lead weight in purse seines are outlined. Measurements confirmed that the sinking speed varied with mesh size and ... -
Report of the Working Group on the Assessment of Pandalus Stocks [Copenhagen, 9 -12 February, 1988]
(ICES CM Documents;1988/Assess:14, Working paper, 1988) -
Report of the Working Group on Mass Rearing of Juvenile Marine Fish to the Mariculture Committee of ICES [Vigo, Spain, 6 -8 June, 1988]
(ICES CM Documents;1988/F:38, Working paper, 1988) -
Long-term changes in age at sexual maturity of the northeast Arctic cod (Gadus morhua L.)
(ICES CM Documents;1988/G:42, Working paper, 1988)Maturity ogives of the Northeast Arctic cod for the year classes 1932 to 1976 were computed based on age and number of spawning zones in otoliths of cod caught on the spawning grounds at Lofoten. A reduction in the ... -
Acoustic sampling volume versus equivalent beam angle
(ICES CM Documents;1988/B:5, Working paper, 1988)Irnprovements in target strength measurement have shown the equivalent beam angle (EBA) to be a worrisome source of error in echo integrator surveys. The reason is that the EBA is generally defined as a purely physical ... -
Effects on salmon (Salmo salar) from different operational procedures in fish farming
(ICES CM Documents;1988/F:16, Working paper, 1988)The effects on farmed salmon caused by operational procedures as handling, de-lousing, removal of dead fish, grading and transfer were studied by underwater TV-observations, ultrasonic telemetry of heart rate and analyses ... -
Report of the Atlanto-Scandian Herring and Capelin Working Group [Copenhagen, 26 -30 October, 1987]
(ICES CM Documents;1988/Assess:10, Working paper, 1988) -
Mutual impact of wild and cultured Atlantic salmon in Norway
(ICES CM Documents;1988/Mini:5, Working paper, 1988)The development and current status of the fish farming industry, enhancernent and sea ranching of salmon in Norway are briefly described, and an account is given of the natural salmon river populations in different parts ... -
PC-based echo integration system for fish behaviour studies
(ICES CM Documents;1988/B:35, Working paper, 1988)An echo integration system presenting the distribution and vertical and horizontal movements of fish in net pens, is described. The system can be configured to multiplex up to 16 transducers sequentially. The number of ... -
Report of the Norwegian - EEC Joint Scientific Group on Migration and Area Distribution of Mackerel [Bergen, 11 -13 November, 1987]
(ICES CM Documents;1988/H:17, Working paper, 1988) -
Cleaning symbiosis between wrasses (Labridae) and lice infested salmon (Salmo salar) in mariculture
(ICES CM Documents;1988/F:17, Working paper, 1988)Epidemic infestation by the crustacean ectoparasitic salmon lice (Lepeophteirus salmonis) is a major problem in marine salmon farming. Cleaning symbiosis between different labrid species and lice infested salmon is ... -
Codend selectivity of the Danish seine investigated by the trouser trawl method
(ICES CM Documents;1988/B:28, Working paper, 1988)During June 1986 codend selectivity of the Danish seine was measured using both diamond mesh codends and square mesh codends. Comparisons between different codends were made by the trouser trawl method, having two ... -
Mapping of marine data
(ICES CM Documents;1988/C:39, Working paper, 1988)In the last 7-8 years the Institute of Marine Research has developed and exchanged computer routines with other research institutes, building up effcient tools for computer presentation of marine data. The routines are ... -
Northern North Sea circulation during early fall
(ICES CM Documents;1988/C:32, Working paper, 1988)During the fall of 1987 the Autumn Circulation Experiment (ACE) was carried out in the northern North Sea. The transversal flow of mixed Scottish coastal and Atlantic water from northeast of Scottland towards Norway was ... -
Fecundity and maturity of cod (Gadus morhua L.) from northern Norway
(ICES CM Documents;1988/G:28, Working paper, 1988)The fecundity was determined for cod caught during March 1986 and 1987 in the region Lofoten - Malangsgrunnen, northern Norway. No significant difference in fecundity appeared between the two years. -
Physiological changes in blood and seminal plasma during the spawning period of maturing rainbow trout held under different temperature and salinity regimes, and the effect on survival of the broodstock and the eyed eggs
(ICES CM Documents;1988/F:3, Working paper, 1988)Maturing rainbow trouts reared in sea cages were transferred to tanks and kept under nine different temperature and salinity regimes. Blood and seminal fluids were regularly sampled from the fish, and different organic ...