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View our work on COVID-19 vaccinationsFish stocks and fishing intensity by group
Fish stocks are measured by biomass: the number of individuals multiplied by their mass. Fishing intensity by the fraction of the fish population that is caught in a given
year.
Both are given as a ratio of their levels at the maximum sustainable yield – the level at which we can catch the maximum amount of fish without a decline in fish
populations. A value of one maximises fish catch without decreasing fish populations. This is the target level.
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1970
2016