Browsing ICES CM documents authored by IMR scientists (1949-2011) by Author "Slotte, Aril"
Now showing items 1-20 of 24
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Abundance estimation of Norwegian spring spawning herring wintering in the Vestfjord system, December 1996
Ostrowski, Marek; Foote, Kenneth G.; Røttingen, Ingolf; Slotte, Aril (ICES CM Documents;1997/FF:13, Working paper, 1997)The spawning stock of Norwegian spawning herring has been surveyed when wintering in the Vestfjord, Tysfjord, and Ofotfjord, in northem Norway in December 1996. The basic method is that of echo integration, with compensation ... -
Acoustic abundance estimation of the stock of Norwegian spring spawning herring, winter 1995- 1996
Foote, Kenneth G.; Ostrowski, Marek; Røttingen, Ingolf; Engås, Arill; Hansen, Kaare A.; Hauge, Kjellrun Hiis; Skeide, Roar L.; Slotte, Aril; Torgersen, Øyvind (ICES CM Documents;1996/H:33, Working paper, 1996)Standard echo integration methodology has been applied to the stock of Norwegian spring spawning herring (Clupea harengus) wintering in the Ofotfjord-Tysfjord-Vestfjord system during late autumn 1995 and early winter ... -
Application of Coded Wire Tagging Technology in Pacific Herring to Investigate Stock Structure and Migration
Schweigert, Jake; Flostrand, Linnea; Slotte, Aril; Tallman, Doug; Thomas, J. O. (ICES CM documents, Working paper, 2001)Tagging of Pacific herring in British Columbia has a long history dating to the mid-1930s but uncertainty in tag recovery locations and low tag return rates limited the utility of these studies. Currently, a larger and ... -
Comparison of Northeast Atlantic mackerel (Scomber scombrus) distribution patterns in the Norwegian Sea using lidar, sonar, and trawl
Tenningen, Eirik; Godø, Olav Rune; Iversen, Svein A.; Slotte, Aril; Hjellvik, Vidar; Torkelsen, Terje (ICES CM documents, Working paper, 2003)In July 2002 the Institute of Marine Research (IMR), Bergen mapped the distribution and density of mackerel in the Norwegian Sea using lidar, sonar and trawl. A major objective was to test the efficiency of the lidar as ... -
The correlation between tag-recovery data and VPA-data in Norwegian spring spawning herring
Slotte, Aril; Dommasnes, Are (ICES CM documents, Working paper, 2001) -
Experiments on tagging mortality and shedding in captive Norwegian spring spawning herring: effects of tagging season and tag type
Slotte, Aril; Schweigert, Jake; Flostrand, Linnea; Fosseidengen, Jan Erik (ICES CM documents, Working paper, 2001) -
Factors influencing tag-recovery rates in the Norwegian spring-spawning herring tagging scheme
Slotte, Aril; Schweigert, Jake; Flostrand, Linnea; Røttingen, Jostein (ICES CM documents, Working paper, 2001) -
Getting fat in a hurry: food consumption during the feeding migration of NSS herring
Varpe, Øystein; Fiksen, Øyvind; Slotte, Aril (ICES CM Documents;2004/K:64, Working paper, 2004)The Norwegian spring-spawning (NSS) herring Clupea harengus inhabits a seasonal environment where food is abundant only during a short period of the year. During that period NSS herring store energy for metabolic ... -
Growth differences in juvenile Norwegian spring spawning herring (Clupea harengus L.) related to temperature conditions in the nursery areas
Husebø, Åse; Slotte, Aril; Folkvord, Arild (ICES CM documents, Working paper, 2005)Growth differences in juvenile Norwegian spring spawning herring (Clupea harengus L.) related to temperature conditions in the nursery areas The hatched larvae of Norwegian spring spawning herring are transported to ... -
The influence of fish behaviour on acoustic abundance estimates during the spawning season in Norwegian spring-spawning herring
Slotte, Aril (ICES CM documents, Working paper, 2001) -
Lidar TS measurements on Northeast Atlantic mackerel (Scomber scombrus)
Tenningen, Eirik; Churnside, James H.; Slotte, Aril (ICES CM documents, Working paper, 2003)A green linearly polarized laser and a digital video camera were used to find the average reflectivity and lidar target strength of live mackerel. The light reflected from the fish was compared to that reflected from a ... -
Migration behaviour of herring along the cold front in the Norwegian Sea in April 1997
Misund, Ole Arve; Fernö, Anders; Guenette, Sylvie; Mackinson, Steven; Melle, Webjørn; Nøttestad, Leif; Slotte, Aril (ICES CM Documents;1997/EE:12, Working paper, 1997)The behaviour of Norwegian spring spawning herring when migrating to the feeding areas in the Norwegian Sea in April was mapped by an acoustic survey in 1997. The distribution of herring was recorded by conventional echo ... -
Norwegian spring spawning herring (Clupea harengus L.): protection of spawning areas in relation to changes in migration pattern
Røttingen, Ingolf; Slotte, Aril (ICES CM documents, Working paper, 1998) -
Patterns of aggregation in Norwegian spring spawn herring (Clupea harengus L.) during the spawning season
Slotte, Aril (ICES CM documents, Working paper, 1998) -
Potential sources of unaccounted mortality in the fishery for Norwegian spring spawning herring
Røttingen, Ingolf; Sandberg, Per; Schultz, Bjarne; Slotte, Aril (ICES CM documents, Working paper, 2002)The stock of Norwegian spring spawning herring (NSSH) is managed and fished by 5 different parties. These are the EU, Faroe Islands, Iceland, Norway and Russia. The most common gears are purse seine and pelagic trawl. The ... -
Recruitment variability in Norwegian spring-spawning herring (Clupea harengus L.): the effect of temperature in larval drift trajectories
Fiksen, Øyvind; Slotte, Aril (ICES CM documents, Working paper, 2000)During late winter, the Norwegian spring-pawning (NSS) herring migrate southward along the Norwegian coast to spawn in March-April. The larvae drift northwards in the Norwegian coastal current during their first months and ... -
Relations between seasonal migrations and fat content in Norwegian spring spawning herring (Clupea harengus L.)
Slotte, Aril (ICES CM Documents;1996/H:11, Working paper, 1996)The relationship between seasonal migrations and fat content in Norwegian spring spawning herring (whole herring and fillets) was examined using data for the period 1994-1996. During the feeding period (April-August) in ... -
Size and condition of mackerel in research vessel trawl hauls versus commercial purse seine catches: implications for acoustic biomass estimation
Slotte, Aril; Skagen, Dankert W.; Iversen, Svein A. (ICES CM documents, Working paper, 2006)In September, after the summer feeding has ceased, the Northeast Atlantic mackerel (Scomber scombrus) stock tends to aggregate in ICES Area IVa before they start to migrate southwards in December-February towards the ... -
Size dependency in the migrations and distribution of Norwegian spring spawning herring
Slotte, Aril (ICES CM documents, Working paper, 2003)The size at first spawning is comparatively larger in Norwegian spring spawning herring (Clupea harengus L.) than in other herring stocks in the Atlantic and Pacific oceans. This is probably an adaptation to a life with ... -
Size selective mortality in Norwegian spring spawning herring juveniles?
Husebø, Åse; Stenevik, Erling Kåre; Slotte, Aril; Vikebø, Frode; Folkvord, Arild; Fossum, Petter (ICES CM documents, Working paper, 2005)The growth-mortality hypothesis, where survival during the larval stage is positively related to size, is tested for Norwegian spring spawning herring (Clupea harengus L.). The daily increment width in the otoliths is ...