Proportion of fish stocks within biologically sustainable levels [BIP]
Proportion of fish stocks within biologically sustainable levels [BIP]
Indicator description
SDG Indicator 14.4.1 measures the Proportion of fish stocks within biologically sustainable levels. A fish stock of which abundance is at or greater than the level, that can produce the maximum sustainable yield (MSY) is classified as biologically sustainable. In contrast, when abundance falls below the MSY level, the stock is considered biologically unsustainable.
The indicator address global overfishing and fishery sustainability.
The FAO started monitoring the state of the world’s fishery stocks in 1974, classifying about 445 stocks every 2 or 3 years (FAO 2011). The species assessed account for about 75% of global catch, and thus provide a comprehensive overview of global sustainability status. For some species, diverse data exist whereas for others, little information other than catch is available. The FAO methodology balances the goals of using the best available data and assessing stock status worldwide. It uses a range of methods from formal model-based assessments, to surrogate measures of abundance supplemented by expert opinions.