Browsing Published in cooperation with others by Title
Now showing items 352-371 of 3534
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Comparison of equal-area cylindrical and circular piston transducers
(ICES CM Documents;1994/L:29, Working paper, 1994)Design of sondes for in situ measurement of zooplankton or other scatterers requires choosing among alternative transducer geometries. This contribution addresses the problem of choosing between cylindrical and circular ... -
Comparison of Northeast Atlantic mackerel (Scomber scombrus) distribution patterns in the Norwegian Sea using lidar, sonar, and trawl
(ICES CM documents, Working paper, 2003)In July 2002 the Institute of Marine Research (IMR), Bergen mapped the distribution and density of mackerel in the Norwegian Sea using lidar, sonar and trawl. A major objective was to test the efficiency of the lidar as ... -
Comparison of Norwegian and Russian trawl performance: Preliminary analysis of cod data
(Working paper, 1998) -
Comparison of tags used on arctic cod
(ICES CM Documents;1959/80, Working paper, 1959) -
Comparison of the capture efficiency of 0-group fish in pelagic trawls
(PINRO-IMR Symposium, Conference object, 1995)In 1992 and 1993 experiments were carried out during the international 0-group fish surveys in order to study the capture efficiency of two pelagic trawls. The catches of the standard sampling trawl were compared with ... -
Comparison of the effect of dichlorvos and pyrethrins against salmon lice (Lepeophtheirus salmonis) parasitic on salmon (Salmo salar) by one or successive treatments
(ICES CM Documents;1994/F:21, Working paper, 1994)Experiments with a flower extract containing Pyrethrins generally used as an insecticide has been carried out at Austevoll Aquaculture Research Station since 1989. Different types of administration methods have been ... -
Comparison of the effects of forced errors in survey data between an age and an age-and-length structured model of Northeast Arctic Cod
(ICES CM documents, Working paper, 2004)It is known that many fisheries data sets contain several different sources of error. It is likely that models with different structures will, in general, be affected in different ways by these errors. It is therefore ... -
A comparison of the toggle and sphyrion methods of tagging the lobster (Homarus vulgaris L.)
(ICES CM Documents;1973/K:41, Working paper, 1973) -
Comparison of two 120-kHz split-beam transducers
(ICES CM Documents;1991/B:31, Working paper, 1991)The performance of two 120-kHz split-beam transducers is compared through the following measures: relative power level, directivity index, relative source level, and reverberation index or equivalent beam angle. Sidelobe ... -
Comparison of Uncertainty Estimates in the Short Term Using Real Data
(ICES CM documents, Working paper, 2000)In response to increased interest in the Precautionary Approach, various approaches have been applied to characterize the uncertainty of fisheries assessment projection results. Using three case studies, a comparison of ... -
A comparison of variability and bias when ageing Northeastern Atlantic minke whales (Balaenoptera acutorostrata) by counting growth layer groups in the mandible and bulla tympanica
(ICES CM documents, Working paper, 2001)The age of 43 minke whales (Balaenoptera acutorostrata) was estimated by counting growth layer groups (GLGs) GLGs in 500um thick haemotoxylin stained transverse sections of left and right mandible. The same whales were ... -
Comparisons between size distribution in surveys and commercial catches: a useful tool for monitoring changes in the size selection in the fisheries?
(IMR/PINRO Joint Report Series, Conference object, 2001)A method is proposed for using fish distributions from standarized research surveys for estimating relative selection in the fisheries. The method is applied on data for North-east arctic cod in the 1990-ies. Survey-related ... -
Comparisons between size distribution in surveys and commercial catches: a useful tool for monitoring changes in the size selection in the fisheries?
(IMR/PINRO Joint Report Series, Conference object, 2001)A method is proposed for using fish distributions from standarized research surveys for estimating relative selection in the fisheries. The method is applied on data for North-east arctic cod in the 1990-ies. Survey-related ... -
Compilation of the gadoid data collected during the international herring survey 1976
(ICES CM Documents;1976/F:20, Working paper, 1976) -
Composition par espece et par taille des captures du navire-usine ASTRA (mars-avril 1973 - juin 1973 - fevrier-mars 1974)
(ICES CM Documents;1974/J:16, Working paper, 1974) -
Computerbased detection of schools for counting, quantification of size and swimming behavior by the SIMRAD SA950 sonar
(ICES CM Documents;1993/B:17, Working paper, 1993)As a help in stock assessment of pelagic, schooling fish a software for detection of schools and quantification of their size and swimming behaviour by a high resolution sonar has been developed. The system reads the ... -
Concentration of polychlorinated biphenyls in different tissues of cultured rainbow trout, (Salmo gairdneri)
(ICES CM Documents;1987/E:31, Working paper, 1987)Trunk muscle, ventral muscle, visceral fat and liver from cultured rainbow trout (Salmo gairdner) were analysed for PCB congeners. The congeners quantified were components 52, 49, 44, 101, 118, 138, 187, 183, 128, 180, ... -
Concepts used in the biochemical and serological identification of fish stocks
(ICES CM Documents;Sy:7, Working paper, 1969) -
Condition and size composition effects on the simulated relationship between spawner biomass and total egg production for Northeast Arctic cod (Gadus morhua L.)
(ICES CM Documents;1999/Y:6, Working paper, 1999)Spawner biomass (SB) is often assumed to be proportional to total egg production (TEP) by fish stocks. Recent studies suggest that this assumption may not be valid, particularly when the physiological condition of fish ... -
The consumption rate of northeast arctic cod - a comparison of gastric evacuation models
(ICES CM documents, Working paper, 1990)The consumption rares in fish are important but also often weak points in multispecies models. In the Barents Sea multispecies model (MULTSPECI, as in many other models, quantltative stomach content data are combined ...