Blar i Brage IMR på forfatter "Toresen, Reidar"
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Return of Norwegian spring spawning herring (Clupea harengus L.) to historical spawning grounds off southwestern Norway
Bergstad, Odd Aksel; Røttingen, Ingolf; Toresen, Reidar; Johannessen, Arne; Dragesund, Olav (ICES CM Documents;1991/H:24, Working paper, 1991)From the mid-1940s to mid-1960s a northward displacement of the spawning areas of the Norwegian Spring Spawning Herring was observed. Further retraction of the population from traditional feeding and spawning grounds ... -
Sammendrag
Gjøsæter, Harald; Toresen, Reidar; Torstensen, Else (Havets ressurser og miljø, Chapter, 2007) -
Sudden change in long-term ocean climate fluctuations corresponds with ecosystem alterations and reduced recruitment in Norwegian spring-spawning herring (Clupea harengus, Clupeidae)
Toresen, Reidar; Skjoldal, Hein Rune; Vikebø, Frode Bendiksen; Martinussen, Monica Bente (Journal article; Peer reviewed, 2019)Fish stocks vary in abundance. The causes behind the fluctuations may be difficult to determine, especially ones caused by natural fluctuations, but long‐term data series may provide indications of the mechanisms. Assessments ... -
Survey report : RV "G.O. Sars" 30.june - 18.july 2000
Torstensen, Else; Toresen, Reidar (Fisken og havet, Research report, 2000)This report presents the results from the Norwegian coverage of the International Herring Acoustic Survey for 2000, by the RV "G.O.Sars". The time series of this survey extends back to 1984. Five countries cooperate to ... -
Survey report [27/6 - 18/7, 1998]
Toresen, Reidar; Torstensen, Else ([Toktrapport/Havforskningsinstituttet];, Working paper, 1998) -
Survival tests of internally tagged herring
Hamre, Johannes; Toresen, Reidar (PINRO-IMR Symposium, Conference object, 1990)Two separate survival tests were run in an indoor basin. Herring was tagged applying internal metal tags as used in the annua1 tagging experiments on the Norwegian spring-spawners. The mortality caused by tagging was ... -
Toktrapport [1/6 - 28/6, 1993]
Krysov, Alexander; Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1993-06-27) -
Toktrapport [14/12 - 18/12, 1991]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1992-01-02) -
Toktrapport [18/11 - 27/11, 1987]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1988-01-28) -
Toktrapport [19/5 - 22/6, 1984]
Tjelmeland, Sigurd; Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1985-01-24) -
Toktrapport [23/5 - 15/6, 1990]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1990-09-13) -
Toktrapport [23/5 - 7/6, 1989]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1989-09-19) -
Toktrapport [25/5 - 15/6, 1991]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1991-10-07) -
Toktrapport [26/5 - 14/6, 1992]
Krysov, Alexander; Toresen, Reidar; Borovkov, Vladimir ([Toktrapport/Havforskningsinstituttet];, Working paper, 1992-06-13) -
Toktrapport [28/4 - 2/6, 1986]
Toresen, Reidar; Gjøsæter, Harald ([Toktrapport/Havforskningsinstituttet];, Working paper, 1986) -
Toktrapport [3/11 - 16/11, 1983]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1983-11-23) -
Toktrapport [30/1 - 28/2, 1984]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1984-03-22) -
Toktrapport [5/1 - 18/1, 1989]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1989-01-30) -
Toktrapport [5/1 - 24/1, 1988]
Ona, Egil; Toresen, Reidar; Gjøsæter, Harald ([Toktrapport/Havforskningsinstituttet];, Working paper, 1988) -
Toktrapport [5/11 - 4/12, 1985]
Toresen, Reidar ([Toktrapport/Havforskningsinstituttet];, Working paper, 1985)