Browsing ICES CM documents authored by IMR scientists (1949-2011) by Subject "cod"
Now showing items 161-174 of 174
-
The importance of predator–prey overlap—predicting North Sea cod recovery with a multispecies assessment model Alexander
(ICES CM documents;2010/C:11, Working paper, 2010)The Ecosystem Approach to Fisheries (EAF), nowadays worldwide on political agendas, takes into account ecosystem knowledge, considers multiple external influences and looks at the broader impact of fisheries on the entire ... -
The measurement error of marine survey catches: the bottom trawl case
(ICES CM Documents;2001/P:6, Working paper, 2001)We have formulated a model for analyzing the measurement error of marine survey abundance estimates using data from parallel surveys (trawl haul or acoustic measurement). The measurement error is defined as the component ... -
The Norwegian groundfish survey at Bear island and west-Spitsbergen in the autumn 1981.
(ICES CM Documents;1982/G: 42, Working paper, 1982) -
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 ... -
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 ... -
The relationship between seal abundance and cod worm (Phocanema decipiens) infestation in cod in Norwegian coastal waters
(ICES CM Documents;1985/N:4, Working paper, 1985)A sample of 52 cods, Gadus morhua, caught close to a grey seal, Halichoerus grypus, haul out site, and a total of 652 cods from 18 commercial catches (average sample size 36 cods) were examined with regard to cod worm ... -
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 ... -
The use of transplantation-tagging-experiments in studies of migratory diversity of cod off Norway
(ICES CM Documents;1994/Mini:12, Working paper, 1994)Cod along the Norwegian coast show great variability in migration. Coastal Cod may be stationary for the whole life while mature Northeast Arctic Cod migrate long distances to reach the feeding areas in the Barents Sea ... -
Types and frequency of malformations and mortality in eggs of Arcto-Norwegian cod: A field study
(ICES CM Documents;2001/N:12, Working paper, 2001)Embryological studies on living cod eggs in NUNC-trays showed that spontaneous malformations during embryo development are lethal. They are called natural egg mortality in contrast to external lethal factors, as ... -
Variabilities in stomach contents of cod, collected by demersal and pelagic trawl in the southern part of the Barents Sea
(ICES CM Documents;1990/G:3, Working paper, 1990)Samples of Northeast Arctic cod stomachs were collected separately on demersal and pelagic stations at the same date in February 1986 and were analysed for length group 30-40cm. The results indicate that the mean value ... -
Variation in fish condition between Atlantic cod (Gadus morhua) stocks and implications for their management
(ICES CM documents, Working paper, 2000)A comparative analysis of the fish condition (Fulton’s K) of 11 cod stocks in the North Atlantic in relation to the temperature of their habitat and their reproductive potential is presented. It is shown that the cod ... -
Vertical distribution and feeding of cod larvae in relation to occurrence and size of prey organisms
(ICES CM Documents;1977/L:33, Working paper, 1977) -
Vulnerability to predation of small cod (Gadus morhua) that escape from a trawl
(ICES CM Documents;1995/B:15, Working paper, 1995)Studies of the vulnerability to gear damage of fish that have been caught in a trawl but have escaped through the codend meshes have focussed on determining survival rates. This study examines the risk of predation in ... -
Workshop for the Exploration of the Dynamics of Fish Stocks in Poor Conditions (WKPOOR2) [24-27 August 2009 Bergen, Norway]
(ICES CM documents;2009\ACOM:49, Working paper, 2009)