Blar i Brage IMR på forfatter "Ulltang, Øyvind"
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Report from mesh selection experiments on Pandalus borealis in Norwegian waters
Thomassen, Tore; Ulltang, Øyvind (ICES CM Documents;1975/K:51, Working paper, 1975) -
Report on the Norwegian sampling programme for industrial catches of herring, mackerel and capelin
Hamre, Johannes; Ulltang, Øyvind; Østvedt, Ole Johan (ICES CM Documents;1974/H:27, Working paper, 1974) -
Review of the handling of predation data and data on eventual changes in weight at age and age at first maturity by different assessment working groups
Ulltang, Øyvind (ICES CM Documents;1984/Assess:22, Working paper, 1984) -
Risk analysis and biological knowledge
Ulltang, Øyvind (ICES CM Documents;1993/D:16, Working paper, 1993)The paper adresses the question whether we fully utilize the growth in biological knowledge in fish stock assessments and risk analyses. For illustrative purposes, repeated references are made to the assessment of the ... -
Sjøpattedyr - flerbestandsmodeller
Ulltang, Øyvind (Rapport fra senter for marine ressurser;Nr. 5 - 1993, Working paper, 1993) -
Some aspects of fishing patterns in relation to fishery management
Ulltang, Øyvind (ICES CM Documents;1975/H:52, Working paper, 1975) -
Some comments to the problem of adjusting TACs to mesh size changes.
Ulltang, Øyvind (ICES CM Documents;1979/G:56, Working paper, 1979)Mesh assessments are usually carried out by calculating "short term losses" and "long term gains" expected from a change in the minimum legal mesh size, assuming no change in total fishing effort or its distribution by ... -
Sources of errors in and limitations of Virtual Population Analysis (Cohort analysis)
Ulltang, Øyvind (ICES CM Documents;1976/H:40, Working paper, 1976) -
Stock size fluctuations and rate of exploitation of the norwegian spring spawning herring, 1950-1974
Dragesund, Olav; Ulltang, Øyvind (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978)Stock size fluctuations and rate of exploitation of the Norwegian spring spawning herring, 1950-1974. FiskDir. Skr. Ser. HavUnders., 16: 315-337. The collapse of the Norwegian spring spawning herring stock is described, ... -
Stock size fluctuations and rate of exploitation of the Norwegian spring-spawning herring, 1950 - 1974
Dragesund, Olav; Ulltang, Øyvind (ICES CM Documents;1975/H:47, Working paper, 1975) -
Undersøkelser av fiskeforekomster i Barentshavet og ved Spitsbergen i august - september 1972
Gjøsæter, Jakob; Midttun, Lars; Monstad, Terje; Nakken, Odd; Smedstad, Odd M.; Sætre, Roald; Ulltang, Øyvind (Fisken og havet;1972 - Nr. 3, Research report, 1972)During August—September 1972 observations were made on distribution and abundance of fish in the Barents Sea and off Spitsbergen. The observations of 0-group fish are published in separate report. The amount of capelin ... -
Updated simulations of development in stock size and pup production for harp seals in the Greenland Sea 1946-1993, and corresponding catch and stock projections.
Ulltang, Øyvind (Working paper, 1993)Applying the same model as in Ulltang (1989a, b), the development in stock size and pup production of the Greenland Sea hatp seal population is simulated for the period 1946-1993, assuming a pup production of 50000 in 1991 ... -
Yield curves of North Sea herring
Ulltang, Øyvind (ICES CM Documents;1972/H:8, Working paper, 1972)