Blar i Havforskningsinstituttet på emneord "bestandsberegning"
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Abundance estimation of pelagic fish stocks by acoustic surveying
(ICES CM Documents;1991/B:33, Working paper, 1991)The echo integration technique is outlined. Weaknesses are identified and remedies described. While the technique is adequate for surveying some stocks, improvements are necessary for its proper application to others. ... -
Abundance estimation of schools using a fisheries sonar
(ICES CM Documents;1991/B:35, Working paper, 1991)An attempt of abundance estimation of fish schooling close to surface using sonar was conducted in Eastern North Sea - Skagerrak in September 1990. The method is based on measurements of the school area by the Furuno ... -
Abundance estimation with echo integrator of arctic cod on the spawning grounds in Lofoten 1972
(ICES CM Documents;1972/F:37, Working paper, 1972) -
Abundance indices for the Arcto-Norwegian cod for the period 1979 -1986 based on investigations in June/July
(ICES CM Documents;1986/G:75, Working paper, 1986)Postlarvae Surveys have been carried out in the western part of the Barents Sea in June/July since 1977. The aim of the investigations has been to study the distribution pattern of fish larvae and their relation to the ... -
ACFM comments on stock assessment working group reports: A supplement (for working groups) to the ACFM reports of November 1984 and May 1985
(ICES CM Documents;1985/Assess:20, Working paper, 1985) -
ACFM comments on stock assessment working group reports: A supplement (for working groups) to the ACFM reports of November 1985 and May 1986
(ICES CM Documents;1986/Assess:24, Working paper, 1986) -
Acoustic abundance estimate of 0-group north-east Arctic cod and haddock
(ICES CM Documents;1997/BB:15, Working paper, 1997)The abundance of the 1991-1994-year classes of north-east Arctic cod and haddock at the age of six month have been estimated on the basis of Norwegian acoustic data from the International 0-group fish survey in the Barents ... -
Acoustic abundance estimation of the Icelandic stock of capelin : 1978-1982
(Working paper, 1982)During the period October 1978 - february 1982 several abundance estimates and yearclass composition of the Icelandic capelin stock were obtained by acoustic methods. Surveying has been carried out in July-Agust, September, ... -
Acoustic abundance estimation of the stock of Norwegian spring spawning herring, winter 1995- 1996
(ICES CM Documents;1996/H:33, Working paper, 1996)Standard echo integration methodology has been applied to the stock of Norwegian spring spawning herring (Clupea harengus) wintering in the Ofotfjord-Tysfjord-Vestfjord system during late autumn 1995 and early winter ... -
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 ... -
Acoustic assessment of Norwegian spring spawning herring in the wintering area, December 1995 and January 1995
(ICES CM Documents;1995/H:9, Working paper, 1995)The abundance of the mature component of the stock of Norwegian spring spawning herring has been estimated based on a series of echo integration surveys. These were performed in the wintering area of Ofotfjord, Tysfjord, and ... -
Acoustic estimates of abundance of 0-group gadoids in the northern North Sea in July 1985
(ICES CM Documents;1986/G:28, Working paper, 1986)This paper presents the results from a joint survey with two research vessels in July 1985. Total estimates of abundance (N x 10-9 ), were: Norway pout 56, haddock 52, whiting 66 and cod 4. Comparisons are made with a ... -
Acoustic estimates of saithe in the North Sea in 1984 and 1985
(ICES CM Documents;1985/G:14, Working paper, 1985)This paper describes the results from a joint cruise in July 1984 with two vessels, and the results from two cruises in February - March 1985. In July the saithe were standing well above the bottom, but the saithe were ... -
Acoustic estimates of saithe in the North Sea in 1985 and 1986
(ICES CM Documents;1986/G:49, Working paper, 1986)This paper describes the results from a joint cruise in July 1985 with two vessels, and the results from one cruise in February 1986. The acoustic estimates agree fairly well with the estimates made by the North Sea ... -
Acoustic estimates of spawning cod off Lofoten in 1986
(ICES CM Documents;1986/G:79, Working paper, 1986)The annual survey on the spawning stock of North-east Arctic cod were carried out in the Lofoten area in March 1986. This survey was undertaken to estimate the size and age structure of the spawning cod on the main ... -
Acoustic fish data analysis and recommendations related to survey procedures and acoustic data acquisition.
(Rapport/Notat Fysisk oseanografi, Working paper, 1987)During 5 to 23 February 1987 a consultancy was performed in La Goulette, Tunis for the "Tunisian-German Fisheries Project" on behalf of the Deutsche Gesellschaft für Technische Zusammenarbeid GmbH (GTZ) and the Institut ... -
Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis
(ICES CM Documents;1996/H:31, Working paper, 1996)In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically surveyed in the wintering area. Both immature and mature fish were present. Because of the comparative lateness of the ... -
Acoustic survey of deep-water fish of the Skagerrak
(ICES CM Documents;1992/H:15, Working paper, 1992)Introduction: Two fish species, the greater silver smelt Argentina silus and the roundnose grenadier Coryphaenoides rupestris, are highly abundant in the deep-water areas of the Skagerrak. Since the 1970s, a small aimed ... -
Acoustic survey on blue whiting in the Norwegian Sea, August / September 1985
(ICES CM Documents;1985/H:4, Working paper, 1985)Seven research vessels from USSR, Norway, GDR, Iceland and the Faroes participated in the fourth ICES-coordinated acoustic survey on blue whiting in the Norwegian Sea and adjacent waters. Blue whiting were recorded over ... -
Akustisk mengdemåling av sei, kysttorsk og hyse : Finnmark - Møre hausten 2009
(Toktrapport;Nr. 11 - 2009, Working paper, 2009)