ICES CM documents authored by IMR scientists (1949-2011): Recent submissions
Now showing items 2201-2220 of 3138
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Retrieving the times series of input data for assessment of NEA saithe
(Working paper, 2010-04)This WD is meant as an explanation to how the times series input files for the assessment of NEA saithe is expanded to age 15+ at the 2010 AFWG. Table 3 and 4 includes age group 2. This age group is not used in the current ... -
Ultrasonic tags reveal seasonal movements in red king crab (Paralithodescamtschaticus)
(ICES CM Documents;2010/K:14, Working paper, 2010-09-22)The red king crab was introduced to the Barents Sea in the 1960s and has spread widely both in Norwegian and in Russian waters, entailing a need to acquire knowledge of the biology and behaviour of the crab in these areas. ... -
What controls the spatial distribution of spawning anchovy in the Bay of Biscay? : a multi-model approach
(ICES CM documents;2010/G:05, Working paper, 2010)Spawning is an important phase for short-lived species like anchovy (Engraulis encrasicolus) as it ensures the renewal of the population through the recruitment process. Data from the PELGAS (PELagiques GAScogne) surveys, ... -
Barents Sea Ecosystem Resilience under global environmental change 2010-2013
(ICES CM Documents;2010/Q:27, Working paper, 2010) -
Some exploratory XSA runs for NEA-saithe (using FLR)
(Working paper, 2010-02)S.E_Log q residuals and scaled weights from XSA diagnostics are presented together with estimates of Fbar and SSB in the final assessment year for 10 different single and multi fleet runs. The purse seine tuning series ... -
Report of workshop on the Determination of Acoustic Target Strength of Redfish (WKTAR).
(ICES CM Documents;2010/SSGESST:15, Working paper, 2010-06)The Workshop on the Determination of Acoustic Target Strength of Redfish (WKTAR) met in Tromsø, Norway on 1–3 June 2010. The workshop was chaired by Mike Jech and Benjamin Planque and was attended by eight participants ... -
Northeast Atlantic blue whiting
(ICES Cooperative Research Report;306, Working paper, 2010-10) -
NEA saithe XSA runs with different survey tuning series
(Working paper, 2010-02)New tuning series from a combined and improved survey gives lower and more stable S. E. Log q residuals than the tuning series presently used. However, the retrospective trend is still poor and the estimates of F and SSB ... -
A comparison of egg quality and larval viability between cultured coastal cod and wild arcto-norwegian cod
(ICES CM documents;1991/F:41;, Working paper, 1991)Experiments on cod eggs revealed an inverse relationship between egg diameter and mortality. Further, larvae hatching from small eggs showed a redeuced feeding ability. Other methods to characterice larval viability ... -
Observer program for juvenile Northeast Arctic saithe
(Working paper, 2010-02)NEA saithe 0-group indices from observers along the coast does not seem to reflect the dynamics in year class strength very well and is therefore probably not suitable for improving future recruitment estimates for this stock. -
On the application of the echointegration method
(ICES CM documents;1983/B:19, Working paper, 1983)The echo integration method used by the Institute of Marine Research is described. The model which are used to convert acoustic abundance indices into fish densities using length and species dependant conversion factors, ... -
Abundance and mortality of Northeast Arctic cod and haddock during their first years of life
(ICES CM Documents;2010/C:04, Working paper, 2010)For Northeast Arctic cod and haddock in the Barents Sea, long time series of year-class abundance are available at several stages before they recruit to the fishery, i. e. before they reach age 3. Several studies have ... -
Registration of diseases during traditional biological surveys
(ICES CM Documents;1983/Gen:8, Working paper, 1983) -
Optimal acoustic beam pattern corrections for split beam transducers
(ICES CM Documents;1990/B:30, Working paper, 1990)Precise in situ target strength estimates of fish can only be made when the effect of the transducer directivity is totally removed from the recorded target amplitudes. By guiding a standard calibration target through the ... -
Three-in-one transducer design for a triple-frequencey echo sounder
(ICES CM Documents;1989/B:8, Working paper, 1989)A design is outlined in which three different kinds of transducer elements are arranged concentrically and in near proximity. It will be possible to drive the elements simultaneously, thus forming three coaxial beams at ... -
Sound speed measeurments of Antarctic krill
(ICES CM Documents;1989/B:7, Working paper, 1989)The longitudinal sound speed in Euphausia superba has been measured by time of flight of an acoustic pulse through a suspension of krill in a T-shaped tube with nominal path length of 20 cm. Results are presented. -
Simulating echograms
(ICES CM Documents;1989/B:6, Working paper, 1989)Simulation of echo data can be useful for verifying echo integrators realized in computer software. A model is presented which associates distinct stochastic processes with each of the following: bottom depth; number, ... -
Report of the 2006 session of the Joint EIFAC/ICES Working Group on Eels [Rome, 23–27 January 2006]
(ICES CM documents;2006/ACFM:16, Working paper, 2006)This publication is the report of the 2006 session of the Joint European Inland Fisheries Advisory Commission (EIFAC) and International Council for the Exploration of the Sea (ICES) Working Group on Eels which was held ... -
Modeling secondary production in the Norwegian Sea with a fully coupled model system
(ICES CM documents;L:09, Working paper, 2010-09) -
Habitat selection and competition amongst 0-group gadidae off Mid-Norway
(Working paper, 1988)Juvenile gadids and other co-occurring fishes were collected during August in the years 1981 to 1983 at the Møre coast (Mid-Norway). The gears used were pelagic trawl, bottom trawl, Danish seine and beach seine. All species ...