dc.contributor.author | Toresen, Reidar | |
dc.date.accessioned | 2012-07-03T09:18:25Z | |
dc.date.available | 2012-07-03T09:18:25Z | |
dc.date.issued | 1985 | |
dc.identifier.citation | This report is not to be cited without prior reference to the author | no_NO |
dc.identifier.uri | http://hdl.handle.net/11250/104050 | |
dc.description.abstract | The trawl data from the International 0-group fish surveys in the
Barents Sea are analyzed. The fishing powers of the participating
vessels are estimated and corrected for. A relative index of year
class strength is computed on a logarithmic scale applying the
method described by RANDA (1982). The average yearly recruitment of
Norwegian spring-spawning herring is very low in the period, and only
the 1983 year class can be caracterized as a strong one. A few other
year classes, 1966, 1973, 1979 and 1984 may be rated as slightly above
the average if the 1983 year class is not taken into account.
In the period 1975-82 an index of recruitment of herring was obtained
through bioacoustic measurements in the fjords of northern Norway. In
1983 and 84 the distribution of 0-group herring changed and most of
the 0-group herring was concentrated in the Barents Sea. | no_NO |
dc.language.iso | eng | no_NO |
dc.publisher | ICES | no_NO |
dc.relation.ispartofseries | ICES CM Documents;1985/H:54 | |
dc.subject | spawning stock | no_NO |
dc.subject | gytebestand | no_NO |
dc.subject | herring | no_NO |
dc.subject | sild | no_NO |
dc.subject | recruitment | no_NO |
dc.subject | rekruttering | no_NO |
dc.title | Recruitment indices of Norwegian spring-spawning herring for the period 1965 -1984 based on the international 0-group fish surveys | no_NO |
dc.type | Working paper | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 | no_NO |
dc.subject.nsi | VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 | no_NO |
dc.source.pagenumber | 10 s. | no_NO |