Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "stock assessment"
Viser treff 621-640 av 660
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The squid Todarodes sagittatus (Lamarck) : Norwegian investigations in the Norwegian Sea and North Atlantic waters 1970-1972
(ICES CM Documents;1972/K:25, Working paper, 1972) -
A stochastic model for the management of the Northwestern Atlantic harp seal Pagophilus groenlandicus population
(ICES CM Documents;1976/N:15, Working paper, 1976) -
Stock discrimination of horse mackerel (Trachurus trachurus) in the Northeast Atlantic and Mediterranean Sea: integrating the results from different stock identification approaches
(ICES CM Documents;2004/EE:19, Working paper, 2004)The goal of horse mackerel stock discrimination was tackled by integrating both established and innovative approaches such as genetic markers (allozymes, mtDNA, microsatellite DNA and SSCP), morphometry and parasites, ... -
Stock prediction using stochastic recruitment numbers with empirical stock-dependent distribution
(ICES CM Documents;1991/H:28, Working paper, 1991)Probability distributions for the recruitment, conditional on the spawning stock biomass (SSB) were made using a kernel method. Predictions were made with recruitments according to these distributions for 10 years, using ... -
Stock size and mortality estimates for Barents Sea capelin based on acoustic methods.
(ICES CM Documents;1981/H:45, Working paper, 1981) -
Stock size fluctuations and rate of exploitation of the Norwegian spring-spawning herring, 1950 - 1974
(ICES CM Documents;1975/H:47, Working paper, 1975) -
Stock size of sprat in the North Sea estimated from an echo integrator survey in January 1981.
(ICES CM Documents;1981/H:42, Working paper, 1981) -
Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Description of the 1993 scientific catch operations and preliminary results from stomach analyses and resource surveys
(ICES CM Documents;1994/N:14, Working paper, 1994)Ecological studies of the Northeast Atlantic minke whale (Balaenoptera acutorostrata), initiated in 1992, were continued in 1993. The field work was carried out in spring (15 April-15 May), summer (15 June-12 July) and ... -
Studies of minke whale (Balaenoptera acutorostrata) ecology in the northeast Atlantic: Preliminary results from studies of diet and food availability during summer 1992
(ICES CM Documents;1993/N:7, Working paper, 1993)Stomach content samples from 92 minke whales Balaenoptera acutorostrata, caught during scientific whaling operations in July-August 1992, were collected in five selected areas in Norwegian and adjacent waters. Preliminary ... -
Studies of the abundance and distribution of fish off West Africa November - December 1972
(ICES CM Documents;1973/J:24, Working paper, 1973) -
Target strength measurements and acoustic biomass estimation of capelin and 0-group fish
(ICES CM documents, Working paper, 1976) -
Testing various geostatistical models to combine bottom trawl catches and acoustic data
(ICES CM Documents;2004/R:28, Working paper, 2004)The aim of the CATEFA project is to combine information on demersal fish stock abundance from acoustic and bottom trawl surveys. While acoustic data are collected continuously while the research ship is underway, it is ... -
The CoML pilot project MAR-ECO: Goals, status, and significance for ICES
(ICES CM Documents;2002/L:10, Working paper, 2002)The Mid-Atlantic ridge and adjacent waters are targeted in an international ecosystem study under the Census of Marine Life programme. This pilot project shall gather new knowledge on biodiversity, distribution patterns, ... -
The development of a new gillnet fishery for anglerfish (Lophius piscatorius) in Norwegian waters
(ICES CM Documents;1995/G:12, Working paper, 1995)In autumn 1992 a direct gillnet fishery for anglerfish (Lophius piscatorius) started on the continental shelf off the northwestern coast of Norway. The anglerfish had previously only been taken as bycatch in trawls and ... -
The distribution and abundance of harbour porpoises and other small cetaceans in the North Sea and adjacent waters
(ICES CM Documents;1995/N:10, Working paper, 1995)To provide accurate and precise estimates of abundance for harbour porpoises and other small cetaceans throughout the North Sea and adjacent waters, an intensive shipboard and aerial sightings survey was conducted in ... -
The distribution and abundance of harbour porpoises and other small cetaceans in the North Sea and adjacent waters
(ICES CM Documents;1995/N:10, Working paper, 1995)To provide accurate and precise estimates of abundance for harbour porpoises and other small cetaceans throughout the North Sea and adjacent waters, an intensive shipboard and aerial sightings survey was conducted in ... -
The egg production and spawning stock size of the North Sea mackerel stock in 1984
(ICES CM Documents;1985/H:38, Working paper, 1985)During the period 22 May to 17 July the spawning area of North Sea mackerel was investigated by research vessels from Scotland, the Netherlands, Denmark and Norway. Based on the 629 plankton samples and temperature ... -
The egg production and spawning stock size of the North Sea mackerel stock in 1990
(ICES CM Documents;1991/H:11, Working paper, 1991)During the period 12 March to 20 July 1990 the spawning area of the North Sea mackerel was investigated by research vessels from the Netherlands, Denmark and Norway. Based on the plankton samples and temperature observations ... -
The equivalent beam angle and its effective value when applying an integrator threshold
(ICES CM Documents;1987/B:35, Working paper, 1987)In a noise-limited echo integration system, a threshold is applied in order to avoid the contribution from noise. As the signal-to-noise ratio decreases with range, the effective observation volume for small targets is ... -
The measurement error of marine survey catches: the bottom trawl case
(ICES CM Documents;2001/P:6, Working paper, 2001)We have formulated a model for analyzing the measurement error of marine survey abundance estimates using data from parallel surveys (trawl haul or acoustic measurement). The measurement error is defined as the component ...