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Indicator 14.4.1 Proportion of fish stocks within biologically sustainable levels

Percentage of marine fish (quota) stocks of UK interest; A) harvested sustainably; B) with biomass at levels that maintain full reproductive capacity

See the JNCC indicator page for more information on sustainable fishing. 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. The indicator comprises measures of A) stocks harvested and B) biomass remaining. (A) When the percentage of fish stocks harvested above the level capable of producing MSY decreases, the sustainability of fish stocks can be said to have improved. (B) When the percentage of fish stocks with biomass above levels that maintain full reproductive capacity increases, the sustainability of fish stocks can be said to have improved. This is the trend between 2006 and 2013.

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Headline data

Source: Department for Environment, Food and Rural Affairs (DEFRA)

Geographical Area: United Kingdom

Unit of Measurement: Percentage (%)

Footnote: Based on 57 stocks for which data are available, derived from stock assessment reports. For spawning stock biomass (SSB) the final year will typically show an increase in ‘unknown’ status due to the cycle by which updates are made to stock assessments.

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 marine fish (quota) stocks of UK interest; A) harvested sustainably; B) with biomass at levels that maintain full reproductive capacity

Indicator description

The indicator comprises of two measures – the percentage of fish stocks in seas around the UK that are harvested sustainably; and those at full reproductive capacity. It is based on a group of 20 species in 57 stocks for which there are reliable estimates of fishing mortality and spawning biomass, together with MSY reference points for fishing mortality and biomass that allow the sustainability of the stocks to be evaluated. The indicator stocks include a range of local and widely distributed species of major importance to the UK fishing industry. The measures are assessed as follows – A) an evaluation of the temporal trends in the exploitation level of stocks of UK interest with respect to the fishing mortality target FMSY. The aim is to increase the proportion of stocks fished at or below FMSY and reduce to zero the number of stocks of unknown status relative to FMSY. B) an evaluation of the temporal trends in the spawning stock biomass (SSB) of stocks of UK interest with respect to safe biological limits. The aim is to increase the proportion of stocks with SSB at or above MSY Btrigger and reduce to zero the number of stocks that have unknown status relative to MSY reference points.

Geographical coverage

United Kingdom

Unit of measurement

Percentage (%)

Definitions

The indicator comprises two measures assessed separately - A) the percentage of stocks fished at or below the level capable of producing Maximum Sustainable Yield (FMSY); and B) the percentage of stocks with biomass above the level capable of producing Maximum Sustainable Yield (MSY Btrigger).

Available disaggregations
Calculations
Other information

Data follows the UN specification for this indicator. This indicator has been identified in collaboration with topic experts.

Data last updated 2020-10-16: see changes on GitHub opens in a new window
Metadata last updated 2020-10-16: see changes on GitHub opens in a new window

This table provides information on metadata for SDG indicators as defined by the UN Statistical Commission. Complete global metadata is provided by the UN Statistics Division.

Indicator name

Proportion of fish stocks within biologically sustainable levels

Target name

By 2020, effectively regulate harvesting and end overfishing, illegal, unreported and unregulated fishing and destructive fishing practices and implement science-based management plans, in order to restore fish stocks in the shortest time feasible, at least to levels that can produce maximum sustainable yield as determined by their biological characteristics

Global indicator description
UN designated tier

Tier I

UN custodian agency

Food and Agriculture Organization (FAO)

Link to UN metadata United Nations Sustainable Development Goals Metadata (PDF 370 KB) opens in a new window
Organisation

Department for Environment, Food and Rural Affairs (DEFRA)

Periodicity

Annual

Earliest available data

1990

Geographical coverage

United Kingdom

Link to data source Sustainable fisheries opens in a new window
Release date

05/09/2019

Next release

TBC

Statistical classification

Official Statistic

Contact details

comment@jncc.gov.uk

Other information