Blar i Published in cooperation with others på emneord "prøvetaking"
Viser treff 1-20 av 127
-
1993 ICES coordinated acoustic survey of ICES Division IVa, IVb and VIa
(ICES CM Documents;1994/H:22, Working paper, 1994)Summary: This paper provides a report on the combined acoustic survey of herring stocks in the North Sea and ICES division IVaN in June-July 1993. The surveys were carried out by Norway, Scotland, Denmark and Netherlands ... -
1994 ICES coordinated acoustic survey of ICES Divisions IVa, IVb, VIa and VIIb
(ICES CM Documents;1995/H:15, Working paper, 1995)Summary: Six surveys were carried out during late June and July covering most of the continental shelf North of 54°N in the North Sea and Ireland to the west of Scotland to a northern limit of 62°N. The eastern edge of ... -
1995 ICES coordinated acoustic survey of ICES Divisions IVa, IVb, VIa and VIIb
(ICES CM Documents;1996/H:8, Working paper, 1996)Summary: Seven surveys were carried out during late June and July covering most of the continental shelf North of 54°N in the North Sea and Ireland to the west of Scotland to a northern limit of 62°N. The eastern edge ... -
A method to estimate the annual larval production of the Norwegian spring-spawning herring (Clupea harengus L.)
(ICES CM Documents;1997/BB:1, Working paper, 1997)A comprehensive survey in the larval distribution area of Norwegian spring-spawning herring along the Norwegian west coast was carried out annually by the Institute of Marine Research, Bergen in the years 1986-1990. ... -
A three level pelagic trawl for near surface sampling of juvenile fish
(ICES CM Documents;1993/B:19, Working paper, 1993)In the northeast Atlantic Ocean catch rates of juvenile fish from pelagic trawls are used to calculate indices of relative abundance which are applied as a first indication of year class strength. A major constraint for ... -
Abundance estimation of Norwegian spring spawning herring wintering in the Vestfjord system, December 1996
(ICES CM Documents;1997/FF:13, Working paper, 1997)The spawning stock of Norwegian spawning herring has been surveyed when wintering in the Vestfjord, Tysfjord, and Ofotfjord, in northem Norway in December 1996. The basic method is that of echo integration, with compensation ... -
Acoustic abundance estimation of wintering Norwegian spring spawning herring, with emphasis on methodological aspects
(ICES CM Documents;1994/(B+D+G+H):1, Working paper, 1994)The spawning component and part of the juvenile stock of Norwegian spring spawning herring have been wintering in a fjord system in northern Norway in recent years. Conditions for measuring the stock size have been ... -
Assessing trawl-survey estimates of frequency distributions
(ICES CM Documents;2000/K:23, Working paper, 2000)Marine trawl surveys catch a cluster of fish at each station and fish caught together tend to have more similar characteristics, such as length, age, stomach contents etc., than those in the entire population. When this ... -
Bioaccumulation of contaminants in pelagic organisms, caged blue mussels and cod
(ICES CM Documents;2002/X:4, Working paper, 2002)This short paper will present some preliminary results from the chemistry program of the BECPELAG Workshop. During seven research cruises in 2001 carried out as part of the workshop, pelagic organisms were collected for ... -
Comparison between "underway" and "on station" acoustic measurements made during bottom trawl surveys
(ICES CM Documents;2002/J:3, Working paper, 2002)It becomes in many cases, routine, to collect acoustic data during bottom trawl surveys, both during and between trawls providing “on station” and “underway” acoustic data. Still, the combination of trawl and acoustic data ... -
Diet and food availability for Northeast Atlantic minke whales Balaenoptera acutorostrata
(ICES CM Documents;1995/N:19, Working paper, 1995)Ecological studies of the Northeast Atlantic minke whale (Balaenoptera acutorostra) were carried out during spring (mainly April-May), summer (June-July) and autumn (AugustSeptember) in 1993 and 1994. Four small-type ... -
Distribution and sedimentation of radionuclides in the Barents Sea
(ICES CM Documents;1995/Mini:11, Working paper, 1995)Analysis of sediment samples for cesium-137 from a wide range of positions have demonstrated an uneven distribution. The causes, pathways and the possible origin of the radionuclide are discussed. The importance of ... -
Electronic catch registration onboard commercial fishing vessels for commercial and scientific use
(ICES CM documents;2009/L:16, Working paper, 2009)In assessment and management of marine fish resources, representative data of statistically good quality describing the actual catch are lacking for many fisheries. Even for the most studied fisheries in the north Atlantic, ... -
Electrophoretic studies of redfish (Genus sebastes) from Icelandic and Greenland waters
(ICES CM Documents;1992/G:36, Working paper, 1992)Sebastes spp. from Icelandic and Greenland waters were analysed for biochemical genetic variation by agar gel and starch gel electrophoresis. The main emphasize was put on S. marinus, but the oceanic type S. mentella ... -
Evaluation of the Norwegian shrimp surveys conducted in the Barents Sea and the Svalbard area 1980- 1997
(ICES CM Documents;1997/Y:7, Working paper, 1997)Trawl surveys for shrimp (Pandalus borealis) have been conducted annually in the Barents Sea and the Svalbard area since 1980 by Norwegian research institutes. The surveys have been conducted in the period April to ... -
Evidence of sampling induced biases in mortality estimates from experiments investigating mortality in fish escaping from towed fishing gears
(ICES CM Documents;2002/V:25, Working paper, 2002)When studying escapes from trawl codends and other selective devices, the most common method of capturing or ‘sampling’ escaping fish is using a codend cover (Figure 1). This paper will summarise a programme of work providing ... -
Factors affecting the distribution of wrasses in a fjord system: analysis by generalised linear models
(ICES CM Documents;2000/N:31, Working paper, 2000)Background: Generalised linear models (GLMs, see McCullagh & Nelder 1989) form a modern, flexible and unified approach to statistical modelling. GLMs are of particular value to the analysis of data from ecological surveys, ... -
Formation of nutrient rich bottom water in the eastern parth of the Barents Sea
(ICES CM Documents;1997/R:1, Working paper, 1997)During yearly routine observations of hydrography, nutrients and plankton in the Barents Sea we have observed a distinct anomaly in the distribution of the nutrients silicate and nitrate in near bottom water in an area ... -
Genetic comparison of salmon (Salmo salar L.) from the White Sea and the Atlantic ocean
(ICES CM Documents;1996/M:13, Working paper, 1996)Samples of salmon (Salmo salar) from River Kachkovka and R. Nilma in northem Russia were analysed by starch gel electrophoresis and compared to three Norwegian stocks, R. Neiden in northern Norway and R. Øyre and R. Hop ... -
Growth of Atlantic herring larvae (Clupea harengus L.) in response to climatic long term trends (NAO) and to hydrographical features in the northern North Sea in the period 1990- 1997
(ICES CM Documents;1999/L:26, Working paper, 1999)Herring larvae were sampled during the IHLS in the ICES area IVa from 1990 to 1997. Larval growth was determined based on otolith microstructure analysis from larvae of 7-25mm standard length. The data were correlated ...