Blar i Brage IMR på forfatter "Sandberg, Per"
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Biological and economic implications of a multi-gear fishery for greenland halibut (Reinhardtius hippoglossoides)
Nedreaas, Kjell Harald; Sandberg, Per; Veim, Anne Kjos (ICES CM Documents;1995/S:5, Working paper, 1995)This paper focuses on the level and distribution of fishing mortality in a multigear fishery, and its effect on biological and economic parameters. The Greenland halibut stock in ICES Sub-areas I and Il is at a historically ... -
Bycatch of juvenile fish in the shrimp fishery - management based on bioeconomic criteria
Veim, Anne Kjos; Sunnanå, Knut; Sandberg, Per; Gullestad, Peter (ICES CM Documents;1994/T:14, Working paper, 1994)The bycatch of juvenile fish can be a major problem in fisheries with small meshed trawls, such as fisheries for shrimp, (Pandalus borealis). A sorting grid that effectively removes most of the undersized fish has been ... -
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 ... -
Harvest Control Rule for Northeast Arctic Saithe: should predation on herring be taken into account?
Mehl, Sigbjørn; Røttingen, Ingolf; Sandberg, Per (Conference object, 2006) -
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 ... -
Management Strategies for Northeast Arctic Saithe: - should predation on herring be taken into account?
Mehl, Sigbjørn; Røttingen, Ingolf; Sandberg, Per (Working paper, 2006)The Norwegian Directorate of Fisheries has suggested a management strategy for Northeast Arctic saithe. Based on the assumption that a maximum sustainable yield is achieved at a fishing mortality below Fpa, a strategy ... -
Muligheter og prioriteringer for flerbestandsforvaltning i norske fiskerier
Huse, Geir; Skern-Mauritzen, Mette; Bogstad, Bjarte; Sandberg, Per; Ottemo, Trond; Veim, Anne Kjos; Sørdahl, Elisabeth; Bertelsen, Bernt (Fisken og Havet;7-2018, Research report, 2018)Denne rapporten svarer opp en henvendelse fra Stortinget som har bedt regjeringen utarbeide en opptrappingsplan for norsk bestands- og ressursforskning med mål om å utvikle og innføre en modell for flerbestandsforvaltning ... -
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 ... -
Slik holdes torskefisket lønnsomt
Nakken, Odd; Steinshamn, Stein Ivar; Sandberg, Per (Journal article, 1994) -
The choice of TAC when faced with multiple objectives
Sandberg, Per; Bogstad, Bjarte; Røttingen, Ingolf; Veim, Anne Kjos (ICES CM Documents;1996/P:15, Working paper, 1996)The total allowable catch is a key instrument in fishery management, and advice on its level used to be based purely on biology. In 1991, ACFM stated that its objective was to provide the advice necessary to maintain ... -
The use of Medium-Term Forecasts in advice and management decisions for the stock of Norwegian spring spawning herring (Clupea harengus L.)
Bogstad, Bjarte; Røttingen, Ingolf; Sandberg, Per; Tjelmeland, Sigurd (ICES CM documents, Working paper, 2000)Medium-term simulations on the stock development of Norwegian spring-spawning herring (Clupea harengus L.) have been carried out since 1994 by the ICES «Atlanto-Scandian Herring and Capelin Working Group», in 1996 renamed ...