Blar i Fisken og havet (1958- ) på forfatter "Jakobsen, Tore"

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    • Bunnfiskundersøkelser ved Bjørnøya, Spitsbergen og i Barentshavet med F/F "G. O. Sars" 3. - 20. november 1970 

      Hylen, Arvid; Jakobsen, Tore; Lahn-Johannessen, John; Smedstad, Odd M.; Sætre, Roald (Fisken og havet, Research report, 1972)
      The primary aim of the cruise was to obtain data of the abundance and distribution of the prerecruits (0—3 years of age) of cod and haddock. It was also intended that the cruise should yield information about the suitability ...

    • 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 ...

    • Fiskeforsøk med multifilament, monofilament, og monotwine nylongarn under lofotfisket i 1974 

      Hylen, Arvid; Jakobsen, Tore (Fisken og havet, Research report, 1975)
      From 6 February to 30 March 1974 during the spawning migration of Arcto-Norwegian cod a fishing experiment with gill nets of continuous-multifilament nylon, nylon monofilament and nylon monotwine was carried out in ...

    • Foreløpige resultater av merkeforsøk med småsei på Vestlandet i 1971og 1972 

      Jakobsen, Tore (Fisken og havet, Research report, 1976)
      In 1971 and 1972, 3993 immature, 2-4 year old saithe were tagged and released at seven localities on the west coast of Norway. This paper deals with the recoveries made before 1973. The migration pattern appears to be ...

    • Laboratorieforsøk med innvendig merking av sei 

      Jakobsen, Tore; Jakupsstovu, Stein Hjalti (Fisken og havet, Research report, 1977)
      Recovery of internal tags during the filleting process would create new possibilities for tagging experiments on several species, in Norwegian fisheries primarily cod, haddock, saithe, herring and mackerel. In connection with ...

    • Loddeundersøkelser med F/F «G. O. Sars» i Barentshavet i februar-mars 1973 

      Jakobsen, Tore; Nakken, Odd (Fisken og havet, Research report, 1973)
      During the period 16 February-3 March 1973 R. V. "G. O. Sars" carried out a survey of spawning and prespawning capelin in the Barents Sea. The investigations were a continuation of those reported by Monstad and Midttun ...

    • Merkeforsøk med sei i Nord-Norge nord for Lofoten 1970 - 1974 

      Jakobsen, Tore (Fisken og havet, Research report, 1978)
      In 1970-1974, 7913 saithe, predominantly immature, were tagged in northern Norway. By the end of 1976, 1204 tags (15.2 per cent) were reported recaptured. Recaptures of spawning saithe in the North Sea were more frequent ...

    • Merkeforsøk med sei på norskekysten 1975-1977 

      Jakobsen, Tore (Fisken og havet, Research report, 1982)
      In 1975-77, 18 942 saithe were tagged on the Norwegian coast, a continuation of a tagging program which started in 1972. The results confirm the migration pattern indicated by experiments in 1970-74. There is a substantial ...

    • Merkeforsøk med sei på strekningen Møre - Salten 1971-1974 

      Jakobsen, Tore (Fisken og havet, Research report, 1978)
      In 1971-1974, 5222 young saithe were tagged on the Norwegian coast between 62°N and 67°N. By the end of 1976, 622 (12.7 per cent) were reported recaptured. The results show an increasing tendency of a southward migration ...

    • Merkeforsøk med sei på Sunnmøre i november - desember 1974 

      Jakobsen, Tore (Fisken og havet, Research report, 1978)
      In November - December 1974, 2499 young saithe were tagged and released in Norwegian coastal waters at about 62°30'N. By the end of 1976, 370 (14.8%) were reported recovered. The results showed that a mass migration to ...

    • Merkeforsøk med sei på Vestlandet sør for Stad 1972 - 1974 

      Jakobsen, Tore (Fisken og havet, Research report, 1978)
      In 1972, 1973 and 1974, 6291 young saithe were tagged on the Norwegian west coast south of 62°N. By the end of 1976, 1094 (17.4 per cent) were reported recaptured. Of these, 87.7 per cent were found in the North Sea ...

    • Skreiinnsiget i Lofoten 1976 

      Jakobsen, Tore (Fisken og havet, Research report, 1978)
      In the period 19 February - 5 March 1976 three echo surveys were made with R.V. "Peder Rønnestad" in Lofoten. The distribution of Arctic cod was charted by counting the number of fish recorded per nautical mile by the ...

    • Skreiinnsiget i Lofoten i 1973 

      Jakobsen, Tore (Fisken og havet, Research report, 1974)
      In the period 13 February to 2 March 1973 three surveys were made with R.V. «Peder Rønnestad» in the Lofoten area. The distribution of the spawning Arctic cod was charted and is presented on three figures. The abundance ...

    • Skreiinnsiget i Lofoten i 1975 

      Jakobsen, Tore (Fisken og havet;1975 - Nr.2, Research report, 1975)
      In the period 24 February to 14 March 1975 three echo surveys were made with R. V. "Peder Rønnestad" in the Lofoten area. The distribution of the spawning Arctic cod was charted by counting the number of fish recorded per ...

    • Skreiinnsiget i Lofoten i 1977 

      Jakobsen, Tore (Fisken og havet, Research report, 1978)
      In the period 1 February to 2 March 1977 five echo surveys were made with R.V. "Peder Rønnestad" and R.V. "Johan Ruud" in Lofoten. The distribution of spawning Arctic cod was charted by counting the number of fish recorded ...

    • Skreiinnsiget i Lofoten i 1978 

      Jakobsen, Tore (Fisken og havet, Research report, 1979)
      In the period 5 February to 2 March 1978 three echo surveys were made with R.V. "Johan Ruud" and R.V. "Peder Rønnestad" in Lofoten. The distribution of Arctic cod was charted by counting the number of fish recorded per ...

    • Skreitelling med ekkointegrator i Lofoten i 1972 

      Jakobsen, Tore; Smedstad, Odd M. (Fisken og havet;1972 - Nr. 3, Research report, 1972)
      A survey in the inner part of the Lofoten area was carried out vith R.V. «Johan Hjort» 14-15 March 1972. Abundance estimates and distribution charts were made on the basis of echo integrator deflections. The abundance ...

    • Storseiundersøkelser på kystbankene fra Møre til Lofoten i tiden 1. - 11. mars 1972 

      Jakobsen, Tore (Fisken og havet;1972 - Nr. 3, Research report, 1972)
      The coastal banks from Møre to Lofoten were surveyed with R.V. «Johan Hjort» during the period I —11 March 1972. The primary aim of the survey was by means of echo sounding and trawling to obtain information about the ...