Viser treff 1-10 av 283
Fisheries-induced life history changes in herring (Clupea harengus)
(ICES CM documents;2007/E:23, Working paper, 2007)
Fishing changes not only the population abundance of the target species, but also its population dynamics and life-history traits. A number of studies have shown that life history traits related to the timing of maturation ...
Report of the Herring Assessment Working Group South of 62°N (HAWG) [13-22 March 2007, ICES Headquarters]
(ICES CM documents;2007/ACFM:11, Working paper, 2007)
Differences in swimbladder volume between Baltic and Norwegian spring spawning herring: possible consequences for mean target strength
(ICES CM documents;2007/H:03, Working paper, 2007)
Volume and shape of the swimbladder of Baltic and Norwegian spring spawning herring were measured, together with individual herring fat content. Swimbladder size was found to differ significantly between the two herring ...
Predation on the eggs of Norwegian spring-spawning herring at a spawning ground outside the westcoast of Norway in 1981
(ICES CM Documents;1985/H:55, Working paper, 1985)
Predation on the eggs of demersal spawners has been reported several times, and findings of haddock feeding on capelin or herring eggs is a well known phenomenon. A spawning ground where spawning has been detected through ...
Norwegian investigations in 1984 -1985 on juvenile herring
(ICES CM Documents;1985/H:53, Working paper, 1985)
This paper describes tlte Norwegian investigations on juvenile herring (0-, I- and II-group) of the Norwegian spring spawning stock. The investigations were carried out in Norwegian coastal areas and in the Barents Sea ...
Distribution, drift and condition of herring larvae off western Norway in 1985
(ICES CM Documents;1986/H:39, Working paper, 1986)
The recruitment to the Norwegian spring-spawning herring have during the last twenty years been on a very low level. However, the size of the spawning stock has increased in recent years and in 1983 a rich year class ...
Report of the Working Group on herring larval surveys south of 62°N [Hirtshals, 6 -10 January, 1986]
(ICES CM Documents;1986/H:3, Working paper, 1986)
Report of the Herring Assessment Working Group for the Area South of 62°N [Copenhagen, 24 March -3 April, 1987]
(ICES CM Documents;1987/Assess:19, Working paper, 1987)
Report of the Working Group on Atlanto-Scandian herring [Copenhagen, 27 -31 October, 1986]
(ICES CM Documents;1987/Assess:8, Working paper, 1987)
Report on the 1984 herring acoustic survey in the northern North Sea
(ICES CM Documents;1985/H:34, Working paper, 1985)