Browsing Published in cooperation with others by Subject "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920"
Now showing items 161-176 of 176
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Spatial density distributions of fish, a balance between environmental and physiological limitation
(ICES CM documents, Working paper, 2001)Data (trawl, acoustic, CTD) from four scientific survey series , i.e. along the Norwegian coast, in the North Sea, and in the Barents Sea summer and winter, are used to describe and discuss the spatial density distributions ... -
Stock size of north-east arctic cod estimated from acoustic survey data 1982
(ICES CM documents, Working paper, 1982)Assessments of the total stock and spawning stock of North East Arctic cod were carried out on the basis of Norwegian survey data and commercial landings. The total stock, i.e. fish which was 3 years old and older at 1 ... -
Stock size of north-east arctic cod, estimates from survey data 1982/83
(ICES CM documents, Working paper, 1983)Assessments of the total stock and spawning stock sizes of North-East Arctic cod were carried out on the basis of Norwegian survey data and commercial landings. The total stock at 1 January 1983, fish which was 2 years old ... -
Survey design and analysis procedures: a comprehensive review of good practice
(ICES CM documents, Working paper, 1991)This paper provides a major review of acoustic survey and-data analysis procedures, it has been prepared as a result of discussions in the FAST working group of ICES. A review of published literature is combined with an ... -
Survival of tagged capelin (Mallotus villosus, Müller) and estimates of the 1974 spawning population in the Barents Sea from tag returns
(ICES CM Documents;1975/H:49, Working paper, 1975) -
Tagging and recoveries of grey seals Halichoerus grypus in north Norway and on the Murman Coast, Russia
(ICES CM documents, Working paper, 1996)A total of 787 grey seal pups were tagged between Vestfjorden in North Norway and the White Sea in North West Russia from 1989 to 1994. A majority of them (542) were tagged at the Ainov archipelago on the Murman coast. ... -
Tagging of saithe (Pollachius virens L.) at a Norwegian fish farm : preliminary results on migration
(ICES CM documents, Working paper, 1992)Wild fish, particularly saithe (Pollachius virens L.) are commonly observed in the vicinity of fish farm sea cages on the Norwegian west coast and the fish are known to feed on excess salmon food pellets. To investigate ... -
Target strength measurements and acoustic biomass estimation of capelin and 0-group fish
(ICES CM documents, Working paper, 1976) -
Target strength of polarized fish
(ICES CM documents, Working paper, 1987)The effect of behaviour on target strength is simulated through computation of the average target strength with respect to a range of normal orientation distributions. The mean tilt angle is varied from -30 to 30 deg for ... -
Target strength of tiny roach
(ICES CM documents, Working paper, 1987)Seven frozen specimens of surface-adapted roach (Rutilus rutilus), of lengths 32-40 mm and masses 0.20-0.49 g, have been sectioned with a precision microtome. The swimbladder contours have been digitized and the swimbladder ... -
Use of tag-recovery data to determine migration routes of Norwegian spring-spawning herring
(ICES CM documents, Working paper, 2001) -
Using mark-recapture methods to estimate pup production of harp seals (Phoca groenlandica) in the Greenland Sea
(ICES CM documents, Working paper, 1992)During the period 1968-1991 16,917 harp seal pups have been tagged in the Greenland Sea. From 1976 until 1991, there have been 468 recoveries. 73 of these, mostly drowned in fishing gear or part of Inuit catches at Greenland, ... -
Validating three methods for making probability statements in fisheries forecasts.
(ICES CM documents, Working paper, 2000)We report on a test of three methods that have been used by ICES in making probability statements about fisheries forecasts to management agencies (XSA/WGMTERM, ICA/ICP, and a stochastic projection method that was first ... -
Validation of a 3-D Biophysical Model using Nutrient Observations in the North Sea
(ICES CM documents, Working paper, 1998) -
Variability in the spatial structure of three schooling pelagic species off Namibia
(ICES CM documents, Working paper, 1998) -
Variation in acoustically measured abundance from repeated surveys of herring
(ICES CM documents, Working paper, 1998)A large concentration of wintering herring was surveys continuously with acoustics over 37 hours in a fjord in Northern Norway. 16 surveys of the same area were conducted. Total abundance and statistics were computed for ...