Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Bjørke, Herman"
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A method to estimate the annual larval production of the Norwegian spring-spawning herring (Clupea harengus L.)
Liang, Xingming; Bjørke, Herman (ICES CM Documents;1997/BB:1, Working paper, 1997)A comprehensive survey in the larval distribution area of Norwegian spring-spawning herring along the Norwegian west coast was carried out annually by the Institute of Marine Research, Bergen in the years 1986-1990. ... -
Abundance indices for the Arcto-Norwegian cod for the period 1979 -1986 based on investigations in June/July
Bjørke, Herman; Sundby, Svein (ICES CM Documents;1986/G:75, Working paper, 1986)Postlarvae Surveys have been carried out in the western part of the Barents Sea in June/July since 1977. The aim of the investigations has been to study the distribution pattern of fish larvae and their relation to the ... -
Assessment of potential oil pollution damages on fish resources. Some examples from the area outside mid-Norway
Føyn, Lars; Bjørke, Herman (ICES CM Documents;1987/E:13, Working paper, 1987)Detailed mapping of fish eggs and larvae both in space and time is essential knowledge when realistic assessments of oil pollution damages to the fish resources are established. The text explain with some examples our ... -
Distribution, drift and condition of herring larvae off western Norway in 1985
Bjørke, Herman; Fossum, Petter; Sætre, Roald (ICES CM Documents;1986/H:39, Working paper, 1986)The recruitment to the Norwegian spring-spawning herring have during the last twenty years been on a very low level. However, the size of the spawning stock has increased in recent years and in 1983 a rich year class ... -
Distribution, drift and condition of herring larvae off western Norway in 1987
Sætre, Roald; Bjørke, Herman; Fossum, Petter (ICES CM Documents;1988/H:14, Working paper, 1988)Introduction: After 1959 the Norwegian spring-spawning herring have been spawning along the western coast of Norway north of 62° N. During the sixties the stock was reduced to a minimum. In the recent years there has ... -
Diving observations on Barents Sea capelin at its spawning grounds off the coast of northern Norway
Bakke, Sigmund; Bjørke, Herman (ICES CM Documents;1971/H:25, Working paper, 1971) -
Drift of capelin larvae - a population sink?
Bjørke, Herman; Gjøsæter, Harald; Loeng, Harald (ICES CM Documents;1988/H:54, Working paper, 1988) -
Food and feeding of young herring larvae of Norwegian spring spawners
Bjørke, Herman (ICES CM Documents;1976/H:36, Working paper, 1976)The gut contents of young herring larvae sampled each hour from 4 to 9 April 1967 around a floating drogue at three depth intervals were examined to study their feeding. Copepod eggs constituated more than 90% of the ... -
The food of herring larvae of Norwegian spring spawners
Bjørke, Herman (ICES CM Documents;1968/Sy:5, Working paper, 1968) -
Norwegian investigations on Gonatus fabricii (Lichtenstein)
Bjørke, Herman (ICES CM Documents;1995/K:12, Working paper, 1995)By far the majority of the investigated Gonatus fabricii were caught as bycatch by pelagic trawls fishing in the upper 60 m. Sampling took place in April/May, June/July and August/September in the period 1978- 1991. The ... -
Recordings of mature Gonatus fabricii (Lichtenstein) off the Norwegian coast
Bjørke, Herman; Hansen, Karsten (ICES CM Documents;1996/K:17, Working paper, 1996)Two mature female and three mature males were sampled by trawling with a pelagic trawl at depths of more than 800 m off northem Norway. A third female were sampled with bottom trawl at 970 m off mid Norway. The females ... -
Some preliminary results on food and feeding of young capelin larvae
Bjørke, Herman (ICES CM Documents;1976/H:37, Working paper, 1976)The gut contents of young capelin larvae sampled during a 24 hour period around a floating drogue were examined to study their feeding. The food consisted mainly of Calanus eggs (52%) and Calanus nauplii (42%). Compared ... -
Spawning of Blue Whiting (Micromesistius poutassou) in Norwegian waters
Bjørke, Herman (ICES CM Documents;1983/H:35, Working paper, 1983) -
The spawning period for mackerel in the North Sea
Bakken, Erling; Bjørke, Herman; Afonso, Maria Hortense Dias (ICES CM Documents;1977/H:26, Working paper, 1977)The intensity and duration of the spawning of mackerel (Scomber scombrus L.) was studied by daily plankton sampling from late May to early July 1976 at a single locality in the central part of the spawning area in the North ... -
Strategies in assessment of potential oil pollution effects on the fish resources
Føyn, Lars; Bjørke, Herman (ICES CM Documents;1986/E:34, Working paper, 1986) -
Variability of the drift patterns of spring spawned herring larvae and the transport of water along the Norwegian shelf
Svendsen, Einar; Fossum, Petter; Skogen, Morten D.; Eriksrød, Gro; Bjørke, Herman; Nedreaas, Kjell Harald; Johannessen, Arne (ICES CM Documents;1995/Q:25, Working paper, 1995)Summary: A 3-dimensional baroclinic hydrodynamic model implemented for the North Sea, the Norwegian coast and part of the Norwegian and Barents Seas has been run for 18 years. This model has been used to study the Norwegian ... -
Who eats the larger Gonatus fabricii (Lichtenstein) in the Norwegian Sea?
Bjørke, Herman; Gjøsæter, Harald (ICES CM documents, Working paper, 1998)