Blar i Published in cooperation with others på forfatter "Iversen, Svein A."
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Spatial pattern of migration and recruitment of north east Atlantic mackerel
Uriarte, A.; Alvarez, Paula; Iversen, Svein A.; Molloy, John; Villamor, Begoña; Martins, Maria Manuel; Myklevoll, Sigmund (ICES CM Documents;2001/O:17, Working paper, 2001)An International tagging program on both adult and young mackerel was implemented in 1997 (and partly in 1998) from Portugal to the Shetland isles within the frame of European Study Project 96-035 with the objectives of ... -
Spawning and stock size of North Sea mackerel in 1981
Iversen, Svein A. (ICES CM Documents;1982/H:7, Working paper, 1982) -
Spawning and trends in spawning stock size of the North Sea mackerel during the period 1973-1980
Iversen, Svein A. (ICES CM Documents;1981/H:16, Working paper, 1981)A declinining trend in the size of the spawning stock of North Sea mackerel is described by data obtained from egg surveys. During the period 1973-1980 the spawning stock size was reduced by 60-70%. A similar stock development ... -
Spawning, egg production and stock size of mackerel (Scomber scombrus L.) in the North Sea 1968-1975
Iversen, Svein A. (ICES CM Documents;1977/H:17, Working paper, 1977) -
Stock discrimination of horse mackerel (Trachurus trachurus) in the Northeast Atlantic and Mediterranean Sea: integrating the results from different stock identification approaches
Abaunza, Pablo; Murta, A.; Mattiucci, S.; Cimmaruta, R.; Nascetti, G.; Magoulas, A.; Sanjuan, A.; Comesaña, S.; MacKenzie, K.; Molloy, John; Santos, A.T.; Iversen, Svein A.; Dahle, Geir; Gordo, L.; Stransky, Christoph; Zimmermann, Christopher; Santamaria, M.T.; Ramos, P.; Quinta, R.; Pinto, A.L.; Ruggi, A.; Campbell, Neil (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 size of sprat in the North Sea estimated from an echo integrator survey in January 1981.
Iversen, Svein A.; Aglen, Asgeir; Bakken, Erling (ICES CM Documents;1981/H:42, Working paper, 1981) -
Temperature effect on mortality and growth of lobster (Homarus gammarus) in its first year of life
Danielssen, Didrik S.; Iversen, Svein A. (ICES CM Documents;1975/K:46, Working paper, 1975) -
The egg production and spawning stock size of the North Sea mackerel and horse mackerel stocks in 1988
Iversen, Svein A.; Eltink, A.; Kirkegaard, E.; Skagen, Dankert W. (ICES CM Documents;1989/H:16, Working paper, 1989)During the period 5 April to 28 July 1988 the spawning areas of North Sea mackerel and horse mackerel were investigated by research vessels from the Netherlands, Denmark and Norway. Based on the plankton samples ... -
The egg production and spawning stock size of the North Sea mackerel stock in 1984
Iversen, Svein A.; Westgård, Trond; Kirkegaard, E.; Eltink, A.; Hopkins, P.; Walsh, Martin (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
Iversen, Svein A.; Eltink, A.; Kirkegaard, E.; Skagen, Dankert W. (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 spawning and distribution of mackerel eggs in the North Sea related to the hydrography
Iversen, Svein A.; Ljøen, Rikard (ICES CM Documents;1985/H:37, Working paper, 1985)The distribution of mackerel eggs in the North Sea have been studied several years to estimate the spawning stock size. During these surveys the hydrographical regime has been mapped. Spawning intensity and hydrographical ...