Browsing Brage IMR by Author "Misund, Ole Arve"
Now showing items 61-72 of 72
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Sonar observations of schooling mackerel during purse seining
Misund, Ole Arve (ICES CM Documents;1988/B:27, Working paper, 1988)The swimming behaviour and horizontal dimensions of mackerel schools have been quantified by use of a multibeam, true motion sonar during purse seining in the Northern North Sea, August 1986. The horizontal dimensions ... -
A sonar study of the migration pattern of Norwegian spring-spawning herring (Clupea harengus L.) in July
Kvamme, Cecilie; Nøttestad, Leif; Fernö, Anders; Misund, Ole Arve; Dommasnes, Are; Axelsen, Bjørn Erik (ICES CM documents, Working paper, 2000)About 700 schools of Norwegian spring-spawning herring (Clupea harengus L.) were tracked by multi-beam sonar during transect surveys in the Norwegian Sea in July 1995 and 1996. This herring stock usually concentrates in ... -
Sorter heller notfanga sei enn makrell
Beltestad, Arvid K.; Misund, Ole Arve (Havforskningsnytt, Working paper, 1996) -
Survival of mackerel and saithe escaping through sorting grids in purse seines
Beltestad, Arvid K.; Misund, Ole Arve (ICES CM Documents;1996/B:24, Working paper, 1996)Technology for efficient size-selection of mackerel and saithe in purse seines has been developed. A critical constraint for application of the technology is the survival of escaping fish. We have conducted a series of ... -
Swimming behaviour of fish schools in the North Sea during acoustic surveying and pelagic sampling trawling
Aglen, Asgeir; Misund, Ole Arve (ICES CM Documents;1990/B:38, Working paper, 1990)Swimming behaviour of schooling herring, mackerel and sprat, when approached by a survey vessel, was observed by aid of a true motion sonar. Observations were made both during surveying and during pelagic trawling. Horizontal ... -
Swimming behaviour of schools related to fish capture and acoustic abundance estimation
Misund, Ole Arve (Doctoral thesis, 1991) -
Taking the consequences of international conventions, national policy and our own arguments: developing the way of working at the Institute of Marine Research, Norway, to deliver according to the ecosystem approach.
Misund, Ole Arve; Lønne, Ole Jørgen; Moksness, Erlend; Nepstad, Tore (ICES CM documents;2007/R:18, Working paper, 2007)Over the years The Institute of Marine Research, has been developed to become the leading body for monitoring and exploration of marine ecosystems, development of the aquaculture industry, and science based advices on ... -
The challenge of the herring in the Norwegian Sea: making optimal collective spatial decision
Fernö, Anders; Melle, Webjørn; Misund, Ole Arve; Pitcher, Tony; Nøttestad, Leif; Mackinson, Steven; Hollingworth, Charles (ICES CM Documents;1996/H:15, Working paper, 1996)Herring are long-lived multiple spawners exhibiting strong variation in reproductive and recruitment success between years. They tend to adopt low-risk, preferred-conservative strategies; for example, shifts to alternative ... -
Toktrapport [18/4 - 27/4, 1995]
Misund, Ole Arve; Melle, Webjørn ([Toktrapport/Havforskningsinstituttet];, Working paper, 1995-04-27) -
Trawl designs and techniques used by Norwegian research vessels to sample fish in the pelagic zone
Valdemarsen, John Willy; Misund, Ole Arve (PINRO-IMR Symposium, Conference object, 1995)In resource surveys, representative identification of species and sizes of fish is of vital importance. Various designs and sizes of pelagic trawls and techniques are used in the pelagic zone by Norwegian research vessels ... -
Trawl sampling of small pelagic species off Angola. Effects of avoidance, towing speed, tow duration and time of day
Luyeye, Nkosi; Coetzee, Janet; Boyer, D.; Misund, Ole Arve (ICES CM Documents;1997/W:12, Working paper, 1997)A series of pelagic trawl sampling trials on pelagic species distributed near surface off Angola were conducted by R/V «Dr. Fridtjof Nansen» operating a medium sized pelagic trawl with a vertical opening of about 20 m. ... -
Variability in the spatial structure of three schooling pelagic species off Namibia
Misund, Ole Arve; Coetzee, Janet; Luyeye, Nkosi; Oechslin, Gerhard (ICES CM documents, Working paper, 1998)