Distribution and abundance of norwegian spring spawning herring during the spawning season in 1998
Research report
View/ Open
Date
1998Metadata
Show full item recordCollections
- Fisken og havet (1958- ) [700]
Abstract
During the period 17.02. -23.03.98 the mature and spawning herring were distributed
along the Norwegian coast from 57°N - 69°N. Between 61°N and 69°N the biomass
and abundance estimates were 5,3 million tonnes and 22,5 billion individuals
respectively, whereas between 57°N and 60°N the respective estimates were 77
thousand tonnes and 344 million individuals. The 1992 year class predominated with
47% whereas the 1991 year class comprised 30%. The proportion of the 1991 year
class inreased north of 62°N. Lenght specific somatic weight did not differ
significantly with latitude. Spawning temperature decreased northwards and
southwards from 62°N.
Publisher
HavforskningsinstituttetSeries
Fisken og havet5-1998