Blar i Symposium proceedings på emneord "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924"
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Acoustic estimates of spawning cod in the Lofoten area in 1982 and 1983
(PINRO-IMR Symposium, Conference object, 1984)The main spawning grounds for Arctic cod, the Lofoten area, were covered by acoustic surveys 7 times in 1983 and 12 times in 1983 during the prespawning and spawning season. The results indicated a spawning stock in the ... -
Acoustic stock measurements of the Barents Sea capelin 1972 - 1984: a review
(PINRO-IMR Symposium, Conference object, 1985)This paper gives a review of the procedures currently used to obtain acoustic estimates of the Barents Sea capelin stock, as well as the development history of the procedures, their theoretical and technical basis, and ... -
The capelin assessment model: a documentation
(PINRO-IMR Symposium, Conference object, 1985)The mathematical model used for management of the Barents Sea is documented. The model is used for predicting the evolution of the stock to evaluate the consequence of various catch quotas. -
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 ... -
Devices to avoid by-catch of birds in longline fishery
(IMR/PINRO Joint Report Series, Conference object, 2001) -
Estimating the maturity ogitive for Northeast Arctid cod by a modified assessment model
(PINRO-IMR Symposium, Conference object, 1984)The exploitation (1967-77) of the Northeast Arctic cod is splitted in 12 different fisheries. The mesh assessment model is modified in order to estimate the maturity ogive on the basis of the length and the age distributions ... -
Experiments with cod pots as an alternative to gill-nets in the Varanger fjord in april-june and october-december 1996
(PINRO-IMR Symposium, Conference object, 1997)A newly developed cod pot (two-chamber pot) has been tested in the VarangerfJord area as an alternative to gill-net, with the purpose to reduce the periodically large unaccounted mortality of king crab in the gill-net ... -
Gear selection and sampling gears : proceedings of the seventh IMR-PINRO Symposium, Murmansk,23-24 June 1997
(PINRO-IMR Symposium;7, Research report, 1997) -
Inclined water flow and its applications for reduced bycatch in shrimp trawls
(IMR/PINRO Joint Report Series, Conference object, 2001)The use of the Nordmøre grid in the Pandalus fishery has significantly reduced the bycatch of finfish. Grids operate on physical separation based on size to achieve bycatch reduction. However, problems arise when the size ... -
Methods of index calculation and presentation of fish abundance data using standard computer programs
(PINRO-IMR Symposium, Conference object, 1995)Standard 0-group indices distribution maps are now produced based on hand-drawn maps using AutoCad with some additional procedures. This paper briefly describes the mathod. The paper further describes ways of importing ... -
Methods to reduce bycatch of Red King Crab (Paralithodes camtschatica) in passive fishing gears
(IMR/PINRO Joint Report Series, Conference object, 2001) -
Multisampler - a new tool for use in sampling trawls
(PINRO-IMR Symposium, Conference object, 1997)The MultiSampler is a system to be mounted in sampling trawls to give better estimates and knowledge about fish stocks.The system is remotely controlled via a hydroacoustic link from the vcssel. It consists of a rigid ... -
Prediction of capelin growth for use in CapTool
(IMR/PINRO Joint Report Series;2/2005, Conference object, 2005) -
A preliminary assessment of the effects of introducing a grid in the trawl fishery for the North-East Arctic cod
(IMR/PINRO Joint Report Series, Conference object, 2001)A number of studies have dealt with the testing of alternations of existing gears meant to reduce by-catch of non-target species or sizes. Such alternations can for example be changes in mesh size, mesh shape or introduction ... -
Relationship between survey indices of recruitment and VPA abundance estimates for North-East Arctic cod
(PINRO-IMR Symposium, Conference object, 1995)Survey estimates of abundance of recruiting and partially recruited age groups are important elements for tuning the VPA of north-east Arctic cod, both for estimating the present state of the stock and for future ... -
Relative selectivity in trawls, longline and gillnets on Greenland halibut
(PINRO-IMR Symposium, Conference object, 1997)Selectivity parameters for Greenland halibut (Reinhardtius hippoglossoides, Walbaum) are compared to catches reported fiom trawl, gillnets and longline in the Norwegian scientific fisheries for Greenland halibut. A trouser ... -
Report on the acoustics workshop held at the Soviet/Norwegian symposium on the Barents Sea capelin, Bergen, Norway 14-19 August 1984
(PINRO-IMR Symposium;2, Conference object, 1985) -
Sampling gear selectivity and its effect on estimates of mean length at age
(PINRO-IMR Symposium, Conference object, 1997)Using data fiom the Norwegian bottorn trawl surveys in the Barents Sea in February ( 1989- 1996), the International O-group surveys in the Barents Sea (1 985-1 996) and previously estimaied selectivity for the standard ... -
Sampling gears
(PINRO-IMR Symposium, Conference object, 1997) -
Standard sampling procedure for Barents Sea capelin: A description of standard sampling technique and methods applied to improve the representativeness of the samples
(PINRO-IMR Symposium, Conference object, 1985)The various types of samples, the observations made on each fish, and the coding procedure for these observations are described. The standard procedure of otolith studies on the capelin stock is described in detail, ...