Browsing Symposium proceedings by Issue Date
Now showing items 21-40 of 168
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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 ... -
Spring phytoplankton development and zooplankton reproduction in the central Barents Sea in the period 1979-1984
(PINRO-IMR Symposium, Conference object, 1987)Physical and biological conditions have been studied along a fixed transect across the polar front in the central Barents Sea in late spring or early summer in each year from 1979 to 1984, These data are analysed with ... -
The effect of biological and physical factors on the survival of Arcto-Norwegian cod and the influence on recruitment variability
(PINRO-IMR Symposium, Conference object, 1987)Data from egg and larval field investigations h the Lofoten area are used together with long time series of data on temperature and zooplankton in Lofoten and abundance indices of Arcto-Norwegian cod. The importance ... -
The effect of ambient temperature on the spawning migration of capelin
(PINRO-IMR Symposium, Conference object, 1987)The model presently in use for management of the Barents Sea capelin stock may be considerably improved by utilization of biological information from the spawning stock. The distributions of length and age for capelin ... -
Climatic variations in the Barents Sea
(PINRO-IMR Symposium, Conference object, 1987)The eireulation system of the Barents Sea is described. Warm water flows into the sea from west and is gradually transformed into Artic waters flowing out from the sea, partly as surface currents, partly as dense bottom ... -
Primary production in relation to climatic changes in the Barents Sea
(PINRO-IMR Symposium, Conference object, 1987)The Barents Sea is charaeterized by extreme environmental conditions that have considerable infiuence on the biological development, especially during spring. Based on physical and biological observations obtained during ... -
Distribution of deep sea shrimp (Pandalus borealis Krøyer) in relation to temperature in the Barents Sea
(PINRO-IMR Symposium, Conference object, 1987)In the years 1980 to 1985 stratided raildom bottom trawl surveys were carried out on the shrimp fields in the Svalbard and Barents Sea regions. The objeetives of the cruises were to study the structure of the shrimp stock ... -
Recruitment and distribution of North-East Arctic saithe in relation to changes in the environment
(PINRO-IMR Symposium, Conference object, 1987)The stocks of North-East Arctic saithe and Arctic cod have responded in a similar way to the period of cold climate in the Barents Sea 1976 - 1982. Since a relationship with the climate has been established for Arctic ... -
Distribution and abundance indices of postlarval and 0-group cod
(PINRO-IMR Symposium, Conference object, 1987)Postlarvae surveys have been carried out in the southwestern part of the Barents Sea and the northeastern part of the Norwegian Sea in June/July since 1971, The aim of the Investigations has been to study characteristic ... -
Life history and exploitation of the Norwegian spring spawning herring
(PINRO-IMR Symposium, Conference object, 1990)This paper is a review of the history and exploitation of the Norwegian spring spawning herring stock. In a virgin state the biomass of this stock may have ranged from 15 to 20 million tonnes and it was the most important ... -
Long term changes of growth and maturation in the Norwegian spring spawning herring
(PINRO-IMR Symposium, Conference object, 1990)Two periods with great differences i n year class abundance and recruitment where chosen for growth and maturation studies, 1950 - 1960 and 1973 - 1983. In the first period, the mean year class strength at 3 years was ... -
Some aspects of mortality, condition factors and liver state with Anisakis-infection in blue whiting in the North-east Atlantic
(PINRO-IMR Symposium, Conference object, 1990)Total mortality coefficients of blue whiting in the spawning area as well as in the feeding area, were obtained for various years and for various yearclasses, by calculating the regressions of the natural logarithms of ... -
Distribution and growth of blue whiting in the North-East Atlantic 1980-1988
(PINRO-IMR Symposium, Conference object, 1990)The distribution pattern of the blue whiting spawning stock have gradually changed i n recent years, and concentrations are recorded more offshore and more to the south than before. The activity of the fleet with its ... -
Survival tests of internally tagged herring
(PINRO-IMR Symposium, Conference object, 1990)Two separate survival tests were run in an indoor basin. Herring was tagged applying internal metal tags as used in the annua1 tagging experiments on the Norwegian spring-spawners. The mortality caused by tagging was ... -
The 1983 year class of Norwegian spring spawning herring as juveniles and recruit spawners
(PINRO-IMR Symposium, Conference object, 1990)This paper gives the geographical distribution and the migrations of the 1983 year class of Norwegian spring spawning herring in the period 1983-1989. These migrations are compared with herring migrations of earlier ... -
HM2 (Herring Model 2). A single species computer model of the Norwegian spring spawning herring stock
(PINRO-IMR Symposium, Conference object, 1990)HM2 represents an intermediate, experimental stage of a model that is being developed with the double purpose of being used as an independent single species model for the Norwegian Spring Spawning Herring and of being ... -
Biology and fisheries of the Norwegian spring spawning herring and blue whiting in the northeast Atlantic : proceedings of the fourth Soviet-Norwegian Symposium, Bergen, 12-16 June 1989
(PINRO-IMR Symposium;4, Research report, 1990) -
Interrelations between fish populations in the Barents sea : proceedings of the fifth PINRO-IMR Symposium, Murmansk, 12-16 August 1991
(PINRO-IMR Symposium;5, Research report, 1992) -
The North-East Arctic cod stock's consumption of various prey species 1984-1989
(PINRO-IMR Symposium, Conference object, 1992)The North-East Arctic cod stock's consumption of different prey species has earlier been calculated by Mehl (1989) for the period 1984-1986. However, a new model to describe gastric evacuation on cod has now been presented ...