The dataset collected includes assessment output relating to the years from
1905 to 2021 inclusive for annual estimates of the following variables for
each stock: the annual recruitment estimate; the stock size (spawning stock
biomass); landings (tonnes of fish brought to shore); catches (tonnes of fish
caught at sea); fishing pressure (a fishing mortality rate); the target
fishing mortality that will achieve maximum sustainable yield in the long term
(Fmsy); upper and lower range estimates for Fmsy consistent with multi-annual
plans and ICES advice; a threshold for spawning stock biomass (MSYB trigger),
below which fishing mortality should be reduced below Fmsy, following the ICES
advice rule, to avoid reduced reproductive capacity; a lower limit threshold
for spawning stock biomass below which there is a high risk of reduced
reproductive capacity (Blim). The stock assessment data for fish and shellfish
stocks of UK interest is used to assess indicators of reproductive capacity
(based on spawning stock biomass) and fishing pressure (based on fishing
mortality). The applicable location for these data differ by stock, but are
relevant to UK stock areas in the Celtic Sea / North Sea / wider North East
Atlantic / Arctic region.
