Percentage of catches from stocks of a given status
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Percentage of stocks of a given status
Stock status plots assess the status of stocks by catch biomass (3-year running
average values; top) and by number of stocks (bottom) since 1950. Stock-status
categories are defined using the following criteria (all referring to the
maximum catch [peak catch] or post-peak minimum in each series): Developing
(catches ≤ 50% of peak and year is pre-peak, or year of peak is final year of
the time series); Exploited (catches ≥ 50% of peak catches);
Over-exploited (catches between 50% and 10% of peak and year is post-peak);
Collapsed (catches < 10% of peak and year is post-peak); and
Rebuilding (catches between 10% and 50% of peak and year is after post-peak
minimum). Note that (n), the number of ‘stocks’ is defined as a time series of a
given species, genus or family (higher and pooled groups have been excluded) for
which the first and last reported landings are at least 10 years apart, for
which there are at least 5 years of consecutive catches and for which the catch
in a given area is at least 1000 tonnes.
