CM_1997_CC_16.pdf (1.046Mb)

(a) Spawning stock biomass of Norwegian spring- spawning herring (NSSH), Northeast Atlantic mackerel (NEAM), blue whiting (BW), and summed spawning stock biomass for all three

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

Sampling is done during spawning in spring (Feb-Apr). Mean values of length at age each year in the two periods are held up against spawning stock

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

2016205 02May 25 May Part of the International Ecosystem Survey of the Nordic Seas (IESNS) where the objectives are (1) to measure the abundance of Norwegian

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

The Working Group recommends the continuation of the joint Soviet-Norwegian survey aimed at assessing the blue whiting stock biomass in the spawning area during