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The egg production and spawning stock size of the North Sea mackerel stock in 1990

dc.contributor.authorIversen, Svein A.
dc.contributor.authorEltink, A.
dc.contributor.authorKirkegaard, E.
dc.contributor.authorSkagen, Dankert W.
dc.date.accessioned2012-08-28T13:43:02Z
dc.date.available2012-08-28T13:43:02Z
dc.date.issued1991
dc.identifier.citationThis report is not to be cited without prior reference to the authorsno_NO
dc.identifier.urihttp://hdl.handle.net/11250/104912
dc.description.abstractDuring the period 12 March to 20 July 1990 the spawning area of the North Sea mackerel was investigated by research vessels from the Netherlands, Denmark and Norway. Based on the plankton samples and temperature observations obtained during this period the egg production and spawning stock size were estimated. The estimated total egg production of mackerel (53 x 10^12 eggs) represents a spawning stock biomass of 78 000 tonnes, which is about twice the estimate in 1988.no_NO
dc.language.isoengno_NO
dc.publisherICESno_NO
dc.relation.ispartofseriesICES CM Documents;1991/H:11
dc.subjectmackerelno_NO
dc.subjectmakrellno_NO
dc.subjectegg productionno_NO
dc.subjecteggproduksjonno_NO
dc.subjectstock assessmentno_NO
dc.subjectbestandsberegningno_NO
dc.subjectspawning stockno_NO
dc.subjectgytebestandno_NO
dc.titleThe egg production and spawning stock size of the North Sea mackerel stock in 1990no_NO
dc.typeWorking paperno_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921no_NO
dc.subject.nsiVDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452no_NO
dc.source.pagenumber16 s.no_NO


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