This table provides metadata for the actual indicator available from UK statistics closest to the corresponding global SDG indicator. Please note that even when the global SDG indicator is fully available from UK statistics, this table should be consulted for information on national methodology and other UK-specific metadata information.
| Indicator available | Percentage of fish stocks harvested sustainably and at full reproductive capacity |
|---|---|
| Indicator description | The indicator shows the percentage of fish stocks in seas around the UK that are both harvested sustainably and are at full reproductive capacity. |
| Geographical coverage | United Kingdom |
| Unit of measurement | Percentage (%) |
| Definitions | The indicator is based on a group of 7 species in 13 fish stocks for which there are reliable estimates of fishing mortality and spawning biomass, together with precautionary reference points for fishing mortality and spawning biomass that allow the sustainability of the stocks to be evaluated. A 'stock' refers to a population of a species occurring in a defined sea area; a particular species may occur in multiple stocks in waters around the UK. The 13 stocks represent a wide range of different stocks and fisheries including demersal roundfish (cod, haddock, saithe), flatfish (sole, plaice) and pelagic (blue whiting and mackerel). The International Council for Exploration of the Sea (ICES) classifies a stock's status by comparing the quantity of mature fish (the spawning stock biomass) and the rate at which the stock is exploited, in relation to agreed reference levels. The stock trends and refernce levekls are obtained from fishery and survey data from each zone. |
| Calculations | (Fish stocks harvested sustainably and at full reproductive capacity / Total fish stocks harvested) * 100 |
| Other information | · The indicator has been historically updated and is not directly compariable with previous versions. The indicator is intended to provide a relative trend over time but the absolute value in any year will depend on the mix of stocks. · The indicator excludes sharks, skates, shellfish and many other stocks for which data are not adequate to allow estimation of historic biomass and fishing mortality, or for which the International Council for Exploration of the Sea (ICES) does not provide precautionary reference points. |
| Data last updated | 2018-04-04: see changes on GitHub opens in a new window |
| Metadata last updated | 2018-05-31: see changes on GitHub opens in a new window |