| dc.contributor.author | Simmonds, E. John | |
| dc.contributor.author | Dommasnes, Are | |
| dc.contributor.author | Aglen, Asgeir | |
| dc.date.accessioned | 2012-09-07T07:24:37Z | |
| dc.date.available | 2012-09-07T07:24:37Z | |
| dc.date.issued | 1993 | |
| 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/11250/105178 | |
| dc.description.abstract | This papers provides a report on the combined acoustic survey of herring stocks in the
North Sea and ICES Division IVa in July 1992. Surveys by Norway, Scotland and the
Netherlands are included covering the period 24 June to 31 July. The results and
distributions of herring by age are given for area by 30 mile statistical squares. The
results are expressed in biomass and numbers of fish. In addition data on ichthyophonus
infection rates determined from trawl samples obtained on the survey are reported and
the infected numbers and proportions of the population are estimated. A discussion of
errors in the estimation of ichthyophonus infection are included in the report. | no_NO |
| dc.language.iso | eng | no_NO |
| dc.publisher | ICES | no_NO |
| dc.relation.ispartofseries | ICES CM Documents;1993/H:11 | |
| dc.subject | acoustics | no_NO |
| dc.subject | akustikk | no_NO |
| dc.subject | herring | no_NO |
| dc.subject | sild | no_NO |
| dc.subject | stock assessment | no_NO |
| dc.subject | bestandsberegning | no_NO |
| dc.title | 1992 ICES coordinated acoustic survey of ICES divisions IVa, IVb and VIa | no_NO |
| dc.type | Working paper | no_NO |
| dc.subject.nsi | VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 | no_NO |
| dc.subject.nsi | VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 | no_NO |
| dc.source.pagenumber | 40 s. | no_NO |
