ICES CM documents authored by IMR scientists (1949-2011): Recent submissions
Now showing items 421-440 of 3138
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Vertical distribution of cod, haddock and redfish; Impact on bottom trawl and acoustic surveys in the Barents Sea
(ICES CM Documents;1997/Y:16, Working paper, 1997)At a selected location in the Barents Sea acoustic observations, bottom- and pelagic trawl catch data were collected over a 10 day period. A large proportion of the fish were in the acoustic dead zone during the sampling ... -
Evaluation of the Norwegian shrimp surveys conducted in the Barents Sea and the Svalbard area 1980- 1997
(ICES CM Documents;1997/Y:7, Working paper, 1997)Trawl surveys for shrimp (Pandalus borealis) have been conducted annually in the Barents Sea and the Svalbard area since 1980 by Norwegian research institutes. The surveys have been conducted in the period April to ... -
The relation between the spatial distribution of early juvenile cod (Gadus morhua L.) and zooplankton biomass in the Barents Sea
(ICES CM Documents;1997/T:32, Working paper, 1997)The year class strength of Arcto-Norwegian cod (Gadus morhua L.) in the Barents Sea is extremely variable. One of the key indicators for a possible strong year class is water temperature since good year classes may be ... -
Ocean pathways in the Arctic
(ICES CM Documents;1997/R:8, Working paper, 1997)Introduction: The Arctic Monitoring and Assessment Programme (AMAP), established in 1991, was given the responsibility to monitor the levels and assess the effects of selected anthropogenic pollutants in all compartments ... -
Report of the Working Group on Introductions and Transfers of Marine Organisms [The Hague, Netherlands, 25- 27 March, 1998]
(ICES CM Documents;1998/ACME:4, Working paper, 1998) -
Norwegian acoustic survey of North East Arctic cod on the spawning grounds off Lofoten
(ICES CM Documents;1997/Y:18, Working paper, 1997)An acoustic survey of the spawning stock of North East Arctic Cod off Lofoten has been performed annually in March-April since 1982. The estimates for 1985-1997 have been recalculated and mean length and weight at age ... -
Incorporating experimentally derived estimates of survey trawl catchability into the stock assessment process
(ICES CM Documents;1997/W:5, Working paper, 1997)During the course of the April, 1996, meeting of the Fishing Technology and Fish Behavior Working Group it became clear to many that the methodology for experimentally estimating the catchability of survey trawls might ... -
Trawl sampling of small pelagic species off Angola. Effects of avoidance, towing speed, tow duration and time of day
(ICES CM Documents;1997/W:12, Working paper, 1997)A series of pelagic trawl sampling trials on pelagic species distributed near surface off Angola were conducted by R/V «Dr. Fridtjof Nansen» operating a medium sized pelagic trawl with a vertical opening of about 20 m. ... -
The use of data storage tags to study cod natural behaviour and availability to abundance surveys in the Barents Sea
(ICES CM Documents;1997/W:18, Working paper, 1997)Vertical movements of fish stocks can be studied by means of acoustic data from surveys, and diurnal related cycles in behaviour is often reported. To what extent the movements observed by this method reflect behaviour ... -
Report of the Study Group on the Biology and Assessment of Deep-sea Fisheries Resources [ICES Headquarters, 12- 18 February, 1998]
(ICES CM Documents;1998/ACFM:12, Working paper, 1998) -
The probability of cod (Gadus morhua) and ling (Molva molva) to encounter gillnets based on in situ fish movements
(ICES CM Documents;1997/W:17, Working paper, 1997)The probability of cod (Gadus morhua) and ling (Molva molva) to encounter a fleet of four gillnets (110m) set within a fixed survey area of 600x600 m2 and soaked for a period of 12 h (1800-0600 hrs) is calculated on the ... -
Report of the Study Group on Future Requirements for Fisheries Assessment Data and Software [ICES Headquarters, 21 October, 1997]
(ICES CM Documents;1998/ACFM:9, Working paper, 1998)Introduction: Since the development of IFAP many new analytical methods have been developed which are in common usage by assessment working groups. It has proved time consuming or impossible to incorporate these tools ... -
Report of the Study Group on the Precautionary Approach to Fisheries Management [ICES Headquarters, 3- 6 February, 1998]
(ICES CM Documents;1998/ACFM:10, Working paper, 1998) -
Density dependent catchability in bottom trawl surveys
(ICES CM Documents;1997/W:16, Working paper, 1997)Fish form schools, layer or patches in which the individual fish's behaviour is not independent of its neighbours movements. On the other hand, at low densities fish may have the freedom to act as single individuals ... -
Evaluation of the North-East Arctic saithe (Pollachius virens) acoustic survey
(ICES CM Documents;1997/Y:20, Working paper, 1997)Since 1985 an acoustic survey specially designed for saithe has annually been conducted in October-November by the Institute of Marine Research (IMR) on the Norwegian near coastal banks. Since 1992 the survey has covered ... -
Report of the Benthos Ecology Working Group [Gdynia, Poland, 23- 26 April, 1997]
(ICES CM Documents;1997/L:7, Working paper, 1997) -
On the depth dependence of fish target strength
(ICES CM Documents;1997/FF:7, Working paper, 1997)Data on the depth dependence of the target strength of live kokanee (Oncorhynchus nerka), a physostome, at 50 kHz (Mukai, T., and Iida, K., ICES J. mar. Sci., 53: 245-248 (1996)) have been reexamined. In the cited study, ... -
Report of the Study Group on Ocean Salmon Tagging Experiments with Data Logging Tags [August 1997]
(ICES CM Documents;1997/M:3, Working paper, 1997) -
Report of the ICES/NAFO Workshop on Greenland Halibut Age Determination [Reykjavik, 26- 29 November, 1996]
(ICES CM Documents;1997/G:1, Working paper, 1997) -
Report of the ICES/OSPAR Steering Group on Quality Assurance of Biological Measurements Related to Eutrophication Effects [ICES Headquarters, 18- 21 February, 1997]
(ICES CM Documents;1997/ENV:7, Working paper, 1997)