Blar i Brage IMR på forfatter "Halland, Tor Ivar"
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Egner vintertoktet seg til overvåking av endringer i fiskesamfunnet i Barentshavet? : en gjennomgang av metodikk og data fra 1981-2007
Johannesen, Edda; Wenneck, Thomas de Lange; Høines, Åge S.; Aglen, Asgeir; Mehl, Sigbjørn; Mjanger, Hildegunn; Fotland, Åge; Halland, Tor Ivar; Jakobsen, Tore (Fisken og havet, Research report, 2009-12-10)The winter survey (1981-) is the longest bottom trawl time series in the Barents Sea. The survey is used as tuning series in cod and haddock assessment, but change and ecosystem-based management, necessitates the study of ... -
Investigations on demersal fish in the Barents Sea winter 2003 : detailed report
Aglen, Asgeir; Alvsvåg, John; Halland, Tor Ivar; Høines, Åge S.; Nakken, Odd; Russkikh, Alexey; Smirnov, Oleg (IMR/PINRO joint report series, Research report, 2003)A combined acoustic and bottom trawl survey to obtain indices of abundance and estimates of length and weight at age has been carried out each winter (4-6 weeks in January-March) since 1981 in the Barents Sea. The target ... -
Tagging experiment results on cod in western Norway fjord areas
Godø, Olav Rune; Halland, Tor Ivar; Ågotnes, Per (ICES CM Documents;1986/G:80, Working paper, 1986)During recent years, experiments with large scale release of artificially produced Q-group cod at locations in western Norway waters have been carried out with the aim ofincreaseing the cod catches. As the general ... -
Utbredelse av blåkveite og snabeluer langs Eggakanten [29/7 - 19/8, 2002]
Thangstad, Trond; Halland, Tor Ivar ([Toktrapport/Havforskningsinstituttet];Nr. 17, Working paper, 2002)