| dc.contributor.author | Misund, Ole Arve | |
| dc.contributor.author | Aglen, Asgeir | |
| dc.contributor.author | Beltestad, Arvid K. | |
| dc.contributor.author | Dalen, John | |
| dc.date.accessioned | 2012-08-21T14:30:05Z | |
| dc.date.available | 2012-08-21T14:30:05Z | |
| dc.date.issued | 1990 | |
| 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/11250/104705 | |
| dc.description.abstract | Acoustic measurements of the geometric dimensions and packing density of herring, sprat and
saithe schools have been conducted by multi-beam sonars and echo integrator systems.
Relationships between the reflected echo energy, the estimated school biomass and the school
dimensions were established. The relationships seems quite similar for the three species and
rather independent of the size of the fish. Seasonal and regional differences in schooling behaviour
of herring were detected. School dimension-to-school biomass conversion may be a
useful method for abundance estimation of pelagic species, and also for biomass measurements
in capture situations. | no_NO |
| dc.language.iso | eng | no_NO |
| dc.publisher | ICES | no_NO |
| dc.relation.ispartofseries | ICES CM Documents;1990/B:41 | |
| dc.subject | fish behaviour | no_NO |
| dc.subject | fiskeatferd | no_NO |
| dc.subject | schooling fish | no_NO |
| dc.subject | stimfisk | no_NO |
| dc.subject | gear experiments | no_NO |
| dc.subject | redskapsforsøk | no_NO |
| dc.title | Relationships between the geometric dimensions and biomass of schools | no_NO |
| dc.type | Working paper | no_NO |
| dc.subject.nsi | VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 | no_NO |
| dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924 | no_NO |
| dc.source.pagenumber | 15 s. | no_NO |
