1503-6294_7-2012.pdf (1.139Mb)

Mean length, mean weight, biomass (thousands of tonnes) and numbers (millions) breakdown by age and maturity per stratum obtained during the July 2004 North Sea hydro acoustic

Figure 2 shows the herring estimate by ICES statistical rectangles. Table 1 gives numbers and biomass by age groups for North Sea herring and for Division IIIa!Baltic

Measurements of lengths were taken, and in the case of herring, length stratified samples were taken for maturity, age (otolith extraction), weight, and

Stock estimates for Baltic herring by number and biomass are shown in Tables 6.4 and 6.5 respectively for ICES areas Illa, IVa and IVb; mean weights at age for Baltic herring are

Length distribution (including discards) of Irish catches/ quarter ( thousands).. Celtic Sea and Division VIIj herring.. Table 4.3.1 Mean weights at age in catches and

Table 1 Total numbers (millions of fish) and biomass (thousands of tonnes) of North Sea autumn spawning herring in the area surveyed in the acoustic surveys July 2003, with

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 sampling procedure for age, length and weight determination of adult herring during the Norwegian winter herring fishery (the spawning season) has been described by