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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 backscatter from zooplankton and fish explored through an optimized model framework
(ICES CM Documents;2004/R:39, Working paper, 2004)The purpose of this work has been to test complementary methods in order to classify marine organisms, with particularly attention to zooplankton and fish. Algorithms to separate fish and zooplankton have been developed ... -
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 and Møre in 1985
(ICES CM Documents;1985/G:66, Working paper, 1985)The annual surveys on the spawning stock of North-east Arctic cod were carried out in the Lofoten and Møre areas in March- April 1985. These surveys were undertaken to estimate the size and age structure of the spawning ... -
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 measurements of schooling herring. Estimation of school biomass and target strength
(ICES CM Documents;1988/B:26, Working paper, 1988)The connections between reflected echo energy and dimensions of fatty herring schools were studied by a combination of multibeam sonar and a calibrated echo integration unit. A relation between the area and the biomass ... -
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 ... -
Acoustic visualization of large scale macroplankton and micronekton distributions across the Norwegian shelf and slope of the Norwegian Sea.
(ICES CM Documents;1993/L:44, Working paper, 1993)We present results from acoustical (38 kHz split beam) surveys, biological sampling (trawling, zooplankton nets), and measurements of physical parameters (salinity, temperature, currents) across and along the shelf ... -
Age distributions for spawning capelin 1954 -1984: A review of some selected literature
(ICES CM Documents;1985/H:36, Working paper, 1985)This paper gives a brief review of published information about the age distributions of maturing and spawning capelin in the years 1954-84. The results are presented in a table and a figure, and discussed. -
Aminoacids in Sea-Water by Gas-Chromatography
(ICES CM Documents;1969/C:17, Working paper, 1969) -
An acoustic survey on 0-group gadoids in the northern North Sea and the Shetland-Orkney area, July 1984
(ICES CM Documents;1985/G:17, Working paper, 1985)An acoustic survey was carried out by two research vessels in July 1984 to assess the distribution and abundance of 0-group gadoids. The 0-groups were distributed in scattering layers by night and in schools by day. ... -
An evaluation of survey design for estimating the food consumption by fish
(ICES CM Documents;1991/D:15, Working paper, 1991)The effect of survey design on the precision of estimates of average fish stomach contents is examined. The contribution to the total variance from within and between tow variability in stomach contents is evaluated, ... -
An evaluation of the IMR Summer Bottom Trawl Survey in the Barents Sea
(ICES CM Documents;2001/P:16, Working paper, 2001)Summary: A committee was formed to evaluate the Institute of Marine Research summer survey in the Barents Sea, which has been conducted annually since 1995. The primary focus of the committee was the survey’s importance ... -
An ICES workshop on biological effects in pelagic ecosystems (BECPELAG): overview of the programme
(ICES CM Documents;2002/X:2, Working paper, 2002)The ICES biological effects monitoring in pelagic ecosystems workshop (BECPELAG) is a multi-national, multi-dicipline workshop aimed at establishing suitable techniques for monitoring the effects of contaminants on pelagic ... -
An ICES workshop on biological effects in pelagic ecosystems (BECPELAG): summary of results and recommendations
(ICES CM Documents;2002/X:13, Working paper, 2002)During and after three previous workshops, biological effects methods have been compared and refined. The first was held in Oslo in 1988, the second at Bermuda in 1990, and the third in Bremerhaven in 1992. All three ... -
An ICES workshop on biological effects in pelagic ecosystems (BECPELAG): summary of results and recommendations
(ICES CM Documents;2002/X:13, Working paper, 2002)During and after three previous workshops, biological effects methods have been compared and refined. The first was held in Oslo in 1988, the second at Bermuda in 1990, and the third in Bremerhaven in 1992. All three ...