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Experiences using the constraint technique on bottom trawl doors
(ICES CM Documents;1993/B:18, Working paper, 1993)The constraint technique, i.e. using a rope between the warps, has the intention of minimizing the variability in trawl geometry with depth. Experiments with the constraint technique on two different bottom trawls used ... -
Experiences using the ES-400, split-beam echo sounder, with special reference to the single-fish recognition criterion
(ICES CM Documents;1986/B:38, Working paper, 1986)Realistic estimates of in situ target strength can be made when the fish concentrations are acoustically resolved into single individuals. In the split-beam echo sounder, as in all other systems available for in situ ... -
An experiment with migrating smolt of atlantic salmon (Salmo salar)
(ICES CM Documents;1977/E:61, Working paper, 1977) -
Experimental dumping of waste ferrosulfate (copperas) into the Skagerrak
(ICES CM Documents;1971/E:32, Working paper, 1971) -
Experimental fishing with multifilament, monofilament, and monotwine gillnets in the spawning season of Arcto-Norwegian cod in Lofoten in 1974
(ICES CM Documents;1974/B:17, Working paper, 1974) -
Experimental Oceanography in the Norwegian Sea
(ICES CM Documents;1956/60, Working paper, 1956) -
Experiments on tagging mortality and shedding in captive Norwegian spring spawning herring: effects of tagging season and tag type
(ICES CM documents, Working paper, 2001) -
Experiments with a Topside Chafer of Double Mesh-size
(ICES CM Documents;1966/F:1, Working paper, 1966) -
Experiments with cod pots as an alternative to gill-nets in the Varanger fjord in april-june and october-december 1996
(PINRO-IMR Symposium, Conference object, 1997)A newly developed cod pot (two-chamber pot) has been tested in the VarangerfJord area as an alternative to gill-net, with the purpose to reduce the periodically large unaccounted mortality of king crab in the gill-net ... -
Experiments with cultivation of mussels in Norway
(ICES CM Documents;1968/K:19, Working paper, 1968) -
Experiments with large-mesh trawls in the Bear Island Area
(ICES CM Documents;1955/16, Working paper, 1955) -
Experiments with net of hexagonal meshes in purse seine
(ICES CM Documents;1977/B:39, Working paper, 1977) -
Experiments with selective breeding of Atlantic salmon
(ICES CM Documents;1975/M:22, Working paper, 1975) -
Experiments with selective prawn trawls in Norway
(ICES CM Documents;1976/B:28, Working paper, 1976) -
Exploitation as a driving force of life history evolution: methods and empirical analyses
(ICES CM documents, Working paper, 2004)Today, fishing is the dominant source of mortality in most commercially exploited fish stocks. Life-history theory predicts that, under most circumstances, increased mortality at potential ages and sizes at maturation ... -
Explotation and state of stock
(ICES CM Documents;1988/H:57, Working paper, 1988) -
Extended survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea August-October 2004, Volume 2
(IMR/PINRO joint report series, Research report, 2005)The main aim of the ecosystem survey was to map the distribution and abundance of the young and adult stages of several demersal and pelagic fish species, and in addition to this gather information about hydrographical ... -
Extensive gas bubble release in Norwegian spring spawning herring (Clupea harengus) during predator avoidance
(ICES CM Documents;1998/J:20, Working paper, 1998)Events of extensive gas bubble releases in overwintering Norwegian spring spawning herring (Clupea harengus) were repeatedly observed acoustically and visually in Vestfjorden, northem Norway, during attacks from killer ... -
External peer review of survey serier: Lessons From the Rügen Herring Larvae Survey
(ICES CM documents;2007/P:10, Working paper, 2007)ICES coordinated surveys are, on a non-regular basis, reviewed by parent expert groups. A potential problem is that these are often conducted by evaluators being themselves involved in the surveys, thus lacking ... -
Extinction cross section of herring: New measurements and speculation
(ICES CM Documents;1994/(B+D+G+H):2, Working paper, 1994)Acoustic abundance estimation of dense, vertically extended aggregations of fish requires knowledge of the extinction cross section. An established method based on a comparison of the area backscattering coefficients ...