Q2001.23.pdf (147.4Kb)

Survey data from six herring assesment cruises in the wintering areas for spring spawning Norwegian herring were analysed with regard to variation in abundance and

The entrance region to Tysfjorden was acoustically surveyed a total of eleven times during the December 1996 abundance survey of the spawning stock of Norwegian

We demonstrate how the total uncertainty of the abundance estimate and abundance- at-age estimate of Norwegian spring-spawning herring are affected by uncertainty in the parameters

Stock size fluctuations and rate of exploitation of the Norwegian spring spawning herring, 1950-1974. T h e collapse of the Norwegian spring spawning herring stock is

AKSKLAND, M. Acoustic abundance estimation of the spawning component of the local herring stock in Lindaaspollene, western Norway. During 1978-1980 yearly acoustic

Figure 8 Numbers (millions) of Western Baltic spring spawning herring from combined acoustic survey June - July 2002... Figure 10 Abundance of mature Western Baltic spring

abundance of Norwegian spring spawning herring (Clupea harengus L.).. Maturity changes in Norwegian spring-spawning

Table 1: Point estimates (from north to south) ofbiomass (1000 tonnes), spawning stock biomass (SSB) and numbers (millions) of Norwegian spring spawning herring at spawning grounds