Browsing Brage IMR by Subject "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924"
Now showing items 61-80 of 725
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Can the precision of bottom trawl indices be increased by using simultaneously collected acoustic data? The Barents Sea experience
(ICES CM documents, Conference object, 2006) -
Can the precision of bottom trawl indices be increased by using simultaneously collected acoustic data? The Barents Sea experience
(ICES CM documents, Conference object, 2006) -
Can trawling effort be identified from satellite-based VMS data?
(ICES CM documents, Working paper, 2006)Data from satellite-based vessel monitoring systems (VMS) can, in principle, be used to measure fishing effort with a high spatiotemporal resolution. However, it can be difficult to separate between fishing activity and ... -
The capelin assessment model: a documentation
(PINRO-IMR Symposium, Conference object, 1985)The mathematical model used for management of the Barents Sea is documented. The model is used for predicting the evolution of the stock to evaluate the consequence of various catch quotas. -
Capture and handling of fish for electronic tagging - a review and a new non-intrusive capture method.
(ICES CM documents, Working paper, 1999)While tagging procedures are described in details the capture and handling of experimental fish prior to tagging is not given the same attention in most papers. However, traumas that originate from the capture and handling ... -
Capture techniques for wrasse (Labridae)
(ICES CM Documents;1993/B:22, Working paper, 1993)An increasing demand for wrasse used as cleaner-fish for louse control in salmon farming has led to a new fishery for different wrasse species - particularly goldsinny, rock-cook and corkwing wrasse. This paper describes ... -
Catch comparison between rockhoppers and bobbins ground gear on the Norwegian bottom sampling trawl
(ICES CM Documents;1988/B:31, Working paper, 1988)In a study aimed at improving the reliability of the Norwegian bottom sampling trawl, comparative fishing between standard bobbins gear and rockhopper ground gear were carried out in the Barents Sea. The catch ratios ... -
Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic
(Journal article; Peer reviewed, 2010-06-29)Material collected in summer 2004 from the Mid-Atlantic Ridge between Iceland and the Azores with three pelagic trawls was used to estimate relative catchabilities of common fish, cephalopod, decapod, and jellyfish species. ... -
Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic
(Journal article; Peer reviewed, 2010-06-29)Material collected in summer 2004 from the Mid-Atlantic Ridge between Iceland and the Azores with three pelagic trawls was used to estimate relative catchabilities of common fish, cephalopod, decapod, and jellyfish species. ... -
The catching efficiency of cod gillnets with different hanging ratio (E) and different floatline buoyancy.
(ICES CM Documents;1979/B:19, Working paper, 1979)The floatline buoyancy seems to influence the catching efficiency of cod gillnets. Trials with different byoyancies in cod gillnet fishing in Northern Norway gave the best catches with a buoyancy of about 65 grammes per ... -
Catfish - King of the sea
(ICES CM Documents;1995/B:16, Working paper, 1995)During an acoustic tagging experiment on cod in the Barents Sea in March 1995 a hierarchy between different fish species was revealed, and the catfish (Anarhichas sp.) was observed to be dominant in relation to cod and ... -
Changes in acoustic abundance - a signal indicatior for stock dynamics for cod (Gadus morhua)
(ICES CM documents, Working paper, 1999)To be able to take the proper and timely management actions, it is crucial to reliably defect major changes in trends of fish stock abundance. For the assessment of Northeast Arctic cod, the Norwegian bottom trawl survey ... -
Codend selectivity of the Danish seine investigated by the trouser trawl method
(ICES CM Documents;1988/B:28, Working paper, 1988)During June 1986 codend selectivity of the Danish seine was measured using both diamond mesh codends and square mesh codends. Comparisons between different codends were made by the trouser trawl method, having two ... -
Coincidence echo statistics
(ICES CM Documents;1994/B:40, Working paper, 1994)Two scatterers at similar range give an echo which may appear to be due to a single scatterer. Methods for determining target strength that depend on resolving single scatterers may fail in this instance. Statistics associated ... -
Combined algorithms for detection of acoustic categories
(ICES CM Documents;2004/R:38, Working paper, 2004)There is a current desire to harvest marine resources by managing total marine ecosystems rather than single species of the ecosystems. By means of algorithms applied on high-quality multi-frequency acoustic data, species, ... -
The combined impact of plant-derived dietary ingredients and acute stress on the intestinal arachidonic acid cascade in Atlantic salmon (Salmo salar)
(Journal article; Peer reviewed, 2010-03)A study was conducted to assess the effect of substituting high levels of dietary fish oil (FO) and fishmeal (FM) for vegetable oil (VO) and plant protein (PP) on the intestinal arachidonic acid (AA) cascade in the carnivorous ... -
The combined impact of plant-derived dietary ingredients and acute stress on the intestinal arachidonic acid cascade in Atlantic salmon (Salmo salar)
(Journal article; Peer reviewed, 2010-03)A study was conducted to assess the effect of substituting high levels of dietary fish oil (FO) and fishmeal (FM) for vegetable oil (VO) and plant protein (PP) on the intestinal arachidonic acid (AA) cascade in the carnivorous ... -
Comparative analysis of split beam data
(ICES CM Documents;1988/B:44, Working paper, 1988)Split beam data can provide high quality, in situ, fish target strength estimates, however a careful calibration is required to realize this potential. In same cases a standard target has been used to make a large number ... -
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 ... -
Comparison of equal-area cylindrical and circular piston transducers
(ICES CM Documents;1994/L:29, Working paper, 1994)Design of sondes for in situ measurement of zooplankton or other scatterers requires choosing among alternative transducer geometries. This contribution addresses the problem of choosing between cylindrical and circular ...