| dc.contributor.author | Iversen, Svein A. | |
| dc.contributor.author | Eltink, A. | |
| dc.contributor.author | Kirkegaard, E. | |
| dc.contributor.author | Skagen, Dankert W. | |
| dc.date.accessioned | 2012-08-17T11:09:29Z | |
| dc.date.available | 2012-08-17T11:09:29Z | |
| dc.date.issued | 1989 | |
| dc.identifier.citation | This report is not to be cited without prior reference to the authors | no_NO |
| dc.identifier.uri | http://hdl.handle.net/11250/104619 | |
| dc.description.abstract | During the period 5 April to 28 July 1988 the spawning areas of North Sea
mackerel and horse mackerel were 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 total egg production of
mackerel represents a spawning stock biomass of 37 000
tonnes, which is about 20 % less than the 1986 estimate. The total egg
production of horse mackerel represents a spawning stock
size of 110 000 tonnes. | no_NO |
| dc.language.iso | eng | no_NO |
| dc.publisher | ICES | no_NO |
| dc.relation.ispartofseries | ICES CM Documents;1989/H:16 | |
| dc.subject | egg production | no_NO |
| dc.subject | eggproduksjon | no_NO |
| dc.subject | mackerel | no_NO |
| dc.subject | makrell | no_NO |
| dc.title | The egg production and spawning stock size of the North Sea mackerel and horse mackerel stocks in 1988 | no_NO |
| dc.type | Working paper | no_NO |
| dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 | no_NO |
| dc.subject.nsi | VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 | no_NO |
| dc.source.pagenumber | 22 s. | no_NO |
