Browsing Brage IMR by Author "Røttingen, Ingolf"
Now showing items 21-40 of 103
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Effekter av fiskeri og havbruk på bunn og bunnfauna: Oppfølging og forslag til nye forvaltningstiltak
Buhl-Mortensen, Lene; Aglen, Asgeir; Breen, Michael; Buhl-Mortensen, Pål; Ervik, Arne; Husa, Vivian; Løkkeborg, Svein; Røttingen, Ingolf; Stockhausen, Hans Hagen (Fisken og Havet;2-2013, Research report, 2013-02-20)Rapporten gir en beskrivelse av fiskeredskaper brukt i norske fiskerier som berører bunn. Berørte områder og grad av eksponering beskrives i rapporten. Bunntrål etter fisk og reker er den redskapstypen som har størst effekt ... -
Evaluation of candidate management plans, with reference to North-East Arctic Cod
Skagen, Dankert W.; Bogstad, Bjarte; Sandberg, Per; Røttingen, Ingolf (ICES CM documents, Working paper, 2003)We here discuss the scope, nature and quality standards of simulation models that may be used in order to evaluate proposed or candidate management plans, including their parameters (reference points). A recently proposed ... -
Experiences using the ES-400, split-beam echo sounder, with special reference to the single-fish recognition criterion
Ona, Egil; Røttingen, Ingolf (ICES CM Documents;1986/B:38, Working paper, 1986)Realistic estimates of in situ target strength can be made when the fish concentrations are acoustically resolved into single individuals. In the split-beam echo sounder, as in all other systems available for in situ ... -
Feeding and migration of Norwegian spring spawning herring in the Norwegian Sea
Melle, Webjørn; Røttingen, Ingolf; Skjoldal, Hein Rune (ICES CM Documents;1994/R:9, Working paper, 1994)After spawning on the shelf off Møre, Western Norway, the spawning stock of Norwegian spring spawning herring migrates to the Norwegian Sea for feeding. Simultaneously, the adolescent part of the stock leaves the wintering ... -
Field intercalibrations of echo integrator systems
Røttingen, Ingolf (ICES CM Documents;1978/B:25, Working paper, 1978)The paper reviews intercalibrations of echo integrators carried out in 1975 - 1977 where Norwegian research vessels have participated. Analog and digital integrator performance is compared, and methods to make integrator ... -
Harvest Control Rule for Northeast Arctic Saithe: should predation on herring be taken into account?
Mehl, Sigbjørn; Røttingen, Ingolf; Sandberg, Per (Conference object, 2006) -
Havets ressurser og miljø 2005
Bakketeig, Ingunn; Dommasnes, Are; Føyn, Lars; Haug, Tore; Iversen, Svein A.; Røttingen, Ingolf; Svendsen, Einar; Torstensen, Else (Fisken og havet, særnummer;1-2005, Research report, 2005-05) -
Havforskningsrapporten 2010
Gjøsæter, Harald; Haug, Tore; Hauge, Marie; Karlsen, Ørjan; Knutsen, Jan Atle; Røttingen, Ingolf; Skilbrei, Ove; Sunnset, Beate Hoddevik (Fisken og havet, særnummer;1-2010, Research report, 2010) -
Havforskningsrapporten 2011 : Ressurser, miljø og akvakultur på kysten og i havet
Agnalt, Ann-Lisbeth; Fossum, Petter; Hauge, Marie; Mangor-Jensen, Anders; Ottersen, Geir; Røttingen, Ingolf; Sundet, Jan H.; Sunnset, Beate Hoddevik (Fisken og havet, særnummer;1-2011, Research report, 2011-03) -
Herring (Clupea harengus) as a key species in northeast Atlantic mink whale (Balaenoptera acutorostrata) diets
Lindstrøm, Ulf; Haug, Tore; Røttingen, Ingolf (ICES CM documents, Working paper, 1998) -
How Integrated Ocean governance in the Barents Sea was created by a drive for increased oil production
Olsen, Erik Joel Steinar; Hoel, Alf Håkon; Buhl-Mortensen, Lene; Holen, Silje Nygaard; Røttingen, Ingolf (Journal article; Peer reviewed, 2015-12-19)The Norwegian integrated management plan for the Lofoten–Barents Sea areas (BSMP) was initiated in 2002 following an international push for implementing ecosystem-based management, as well as a national drive to make new ... -
Hvordan dele hav og fisk
Gjøsæter, Harald; Røttingen, Ingolf (Chronicle, 2010-05-19) -
Hvordan dele hav og fisk
Gjøsæter, Harald; Røttingen, Ingolf (Chronicle, 2010-05-19) -
IMR ecosystem activity in the Arctic Ocean. Report from committee
Ingvaldsen, Randi; Chierici, Melissa; Knutsen, Tor; Gjøsæter, Harald; Bogstad, Bjarte; Haug, Tore; Jørgensen, Lis Lindal; Skjoldal, Hein Rune; Huse, Geir; Sunnanå, Knut; Røttingen, Ingolf; Hoel, Alf Håkon (Rapport fra Havforskningen;Nr. 4-2013, Working paper, 2013-01) -
Indication of high natural mortality for juvenile herring from acoustic and tagging data.
Røttingen, Ingolf (ICES CM Documents;1980/H:62, Working paper, 1980)Natural mortality for juvenile herring (Norwegian Spring spawners) is discussed on the basis of following data: 1. Acoustic estimates of the 1975 and 1976 yearclasses of herring as 0-group and estimates from tagging ... -
Investigations on the 1983 year-class of Norwegian spring-spawning herring
Røttingen, Ingolf (ICES CM Documents;1984/H:39, Working paper, 1984) -
Kva har vi lært av loddetoktet? [Leserbrev i Fiskaren 26 mars 2008]
Tjelmeland, Sigurd; Røttingen, Ingolf (Others, 2008-03-26) -
The language of fishery management advice offered by ICES
Sandberg, Per; Røttingen, Ingolf; Gjøsæter, Harald (ICES CM documents, Working paper, 2003)Since the establishment of the Exclusive Economic Zones in the mid 1970s, several exploited fish stocks in the Northeast Atlantic have been managed by total allowable catch (TAC). The advice on annual levels of TAC, as ... -
Lodda i Barentshavet [leserbrev i Fiskaren]
Tjelmeland, Sigurd; Røttingen, Ingolf (Chronicle, 2008-02-11) -
Loddeundersøkelser i Barentshavet i juni - juli 1976
Hamre, Johannes; Røttingen, Ingolf (Fisken og havet, Research report, 1977)During June - July 1976 observations were made on the distribution, abundance and year-class composition of capelin in the Barents Sea. Compared with June 1975 some differences were recorded. A larger abundance of capelin ...