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External Data Spec

Stock assessment database (ICES)

External Data Spec Published 11 Sep 2017
1 min read
The ICES Stock Assessment Database data are available for the analytically assessed ICES stocks from 2014 onwards. Plots and data from previous assessments will be made available when the data and settings have been quality controlled.
information.png Provider:
International Council for the Exploration of the Sea (ICES)
information.png Dataset URL:
http://ices.dk/data/assessment-tools/Pages/stock-assessment-graphs.aspx
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The ICES ecosystem advice is based on assessment results that are presented in stock assessment standard graphs and data tables. Data and plots are available in ICES Stock assessment Database.

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Usage and Citation

Data from published advice can be downloaded, please refer to the ICES Data Policy for full conditions and guidance on citation.  When publishing results from the database the minimum citation should include:

ICES Stock Assessment Database. Copenhagen, Denmark. ICES. [accessed date]. http://standardgraphs.ices.dk

Related content

Interactive charts

Produced figures

Figure State of European commercial fish and shellfish stocks (for which stock assessments were conducted between 2016-2020), in relation to the Good Environmental Status criteria for fishing mortality and reproductive capacity per marine region This figure shows the state of the assessed commercially exploited fish and shellfish stocks per European marine region, for which assessments were conducted in 2016-2020. Stocks for which adequate information is available to determine Good Environmental Status (GES) for fishing mortality (F) and/or reproductive capacity (spawning stock biomass (SSB)) are included (i.e. Z, total number of stocks; Y, total number of assessed stocks; and X, number of stocks for which adequate information is available to determine GES on the basis of these two criteria). A distinction is made between stocks (1) in good status based on both fishing mortality and reproductive capacity; (2) in good status based on only one of the criteria - fishing mortality or reproductive capacity (either because one of the two criteria in not in good status or because there is only one available criteria, and it is in good status); and (3) not in good status based on both fishing mortality and reproductive capacity (may include cases where only one criteria is available and it is not in good status).
Figure Landings and proportion of landings of commercial fish and shellfish for which stock assessments were conducted between 2016-2020 per marine region The figure shows the proportion of commercial European fish landings assessed per regional sea distinguishing between assessed and non-assessed stocks. For the assessed stocks a distinction is made between (i) landings of stocks for which information is available to determine Good Environmental Status (GES) for Fishing mortality (F) and/or Spawning Stock Biomass (SSB) and (ii) landings for stocks for which information is not available to determine GES for F and/or SSB.
Figure State of assessed commercial fish and shellfish stocks in relation to the good environmental status criteria for fishing mortality and reproductive capacity in marine regions This figure shows trends in the status of assessed commercially exploited fish and shellfish stocks between 1947 and 2019, expressed in two metrics-fishing mortality (F) and reproductive capacity (i.e. spawning stock biomass (SSB))-relative to their policy thresholds for the Marine Strategy Framework Directive's 'good environmental status' (GES) (i.e. FMSY and MSY Btrigger, respectively).
Figure
Archived
State of the assessed European commercial fish and shellfish stocks in relation to the Good Environmental Status criteria for fishing mortality and reproductive capacity per EU marine region in 2018 This figure shows the state of the assessed commercially exploited fish and shellfish stocks per EU marine region, for which assessments were conducted in 2015-2019 (not all stocks have annual assessments). Majority of data is from 2018.
Figure
Archived
Landings of commercial fish and shellfish per EU marine region in 2018, and proportion of landings for which stock assessments were conducted between 2015-2019 This figure shows the 2018 landings of commercially exploited fish and shellfish stocks per EU marine region, and the proportions of landings for which stock assessments were conducted in 2015-2019 (not all stocks have annual assessments). See the related Excel File for extra details.
Figure
Archived
Trend in the state of the assessed European commercial fish and shellfish stocks in relation to the Good Environmental Status criteria for fishing mortality and reproductive capacity in the four regional seas This figure shows trends for the North-East Atlantic and the Baltic Sea in the status of assessed commercially exploited fish and shellfish stocks between 1947 and 2019. The shaded areas represent the confidence limits. For the Mediterranean and Black Seas, no GES threshold is available for reproductive capacity. The dashed horizontal line represents the 2003 level for these regions. Due to the reduced number of stocks available for the Eastern Mediterranean Sea (only two), the indicators are not shown for this region.
Figure Trend in the status of stocks assessment and the progress made in GES assessment in the North East Atlantic and Baltic Sea since 1945 This figure shows trends in the status of assessed fish stocks between 1947 and 2017, expressed in two metrics: fishing mortality (F) and reproductive capacity (i.e. spawning stock biomass (SSB)). It reflects their average deviation relative to policy thresholds for Good Environmental Status (GES) (i.e. Fmsy and MSY B trigger respectively)*. For fishing mortality, 1 is a target (Fmsy), above which exploitation is unsustainable, while for reproductive capacity, 1 is a precautionary limit (MSY B trigger), below which there is a high risk that it is impaired.
Figure Status of the assessed European commercial fish and shellfish stocks in relation to Good Environmental Status (GES) per EU marine region in 2015-2017 This figure shows the status of the assessed European commercially exploited fish and shellfish stocks in relation to ‘good environmental status’ (GES) per EU marine region in 2017 (although for the Mediterranean and Black Seas, data refer to 2016). Stocks for which adequate information is available to determine GES for fishing mortality (F) and/or reproductive capacity (spawning stock biomass (SSB)) are included (where Z is the total number of stocks, Y is the total number of assessed stocks and X is the number of stocks for which adequate information is available to determine GES on the basis of these two criteria). A distinction is made between stocks that are (1) in good status based on both F and SSB; (2) in good status based on only one criteria, F or SSB (either because one of the two criteria are not in good status or there is only one available criteria and it is in good status); and (3) not in good status (based on both F and SSB or there is only one criteria available and it is not in good status). As assessments are carried out in a multiannual cycle within the Mediterranean Sea, the number of stocks included for this region depends on the period covered. See the Methodology section for further information on how good status is determined.
Figure Status of the assessed European fish stocks in relation to Good Environmental Status per regional sea This figure shows the status of the assessed European fish stocks in relation to ‘Good Environmental Status’ (GES) per regional sea in 2015. Stocks for which adequate information is available to determine GES for fishing mortality (F) and/or reproductive capacity (spawning stock biomass (SSB)) are included in this figure (i.e. total number of assessed stocks). A distinction is made between stocks (1) in GES, based on both fishing mortality and reproductive capacity; (2) in GES, based on either fishing mortality or reproductive capacity; and (3) not in GES, based on fishing mortality and/or reproductive capacity (see the Methodology section for further information on how GES is determined). As assessments are carried out in a multiannual cycle within the Mediterranean, the number of stocks included for the Mediterranean depends on the period covered.
Figure
Archived
Status of the assessed European fish stocks in relation to Good Environmental Status per regional sea The figure shows the status of the assessed European fish stocks in relation to Good Environmental Status (GES) per regional sea. Stocks in the North-East Atlantic and the Baltic Sea were assessed based on the International Council for the Exploration of the Sea (ICES) database, published in 2016. Stocks in the Mediterranean Sea and the Black Sea, and other widely distributed stocks were assessed based on assessments available through the Scientific, Technical and Economic Committee for fisheries (STECF), published in 2015 and 2016. The Figure is based on 2014 data.

See also

Used in indicators

Indicator Specification Status of marine fish and shellfish stocks in European seas The indicators track the status of commercial fish stocks in European regional seas and the pressure exerted by fisheries on those stocks, as well as the quality of the information available. To that end, the following is reported: the status of marine fish and shellfish stocks based on the current level of exploitation and reproductive capacity; the importance of the (sub-)region, reflected by the total landings (as a proxy of catch) of fish from commercial fisheries in European seas per MSFD (sub-)region; the availability of appropriate information for the status assessment, as reflected by the proportion of those landings covered by quantitative stock assessments (i.e. the proportion providing the required indicators and their reference levels). State of marine fish and shellfish stocks The MSFD requires 'Good Environmental Status' to be achieved by 2020 (EC, 2008). According to the MSFD (Descriptor 3), three criteria are relevant to determining if a fish or shellfish stock has achieved GES. Stocks should be: (1) exploited sustainably consistent with high long-term yields, (2) have full reproductive capacity in order to maintain stock biomass, and (3) the proportion of older and larger fish/shellfish should be maintained (or increased) being an indicator of a healthy stock. Sustainable exploitation: sustainably exploited stocks are stocks for which F is at or below levels that deliver MSY, i.e. F ≤ F MSY . If values for F and F MSY  are available from a stock assessment, the stock is considered to have met the GES criterion if F ≤ F MSY . For some ICES stocks without stock assessments, proxy methods exist to estimate the status of F in relation to F MSY by using catch length and other available biological information. Reproductive capacity: in areas assessed by the ICES, the criterion for sustainable reproductive capacity (SSB > SSB MSY ) has been modified, for pragmatic reasons, to SSB > MSY B trigger . Spawning stock biomass (SSB) is consistently provided as part of ICES stock assessments, i.e. of the North-East Atlantic and Baltic Sea, but not, for the most part, by STECF assessments, i.e. of the Mediterranean and Black Sea stocks. Similarly to the above, a stock is considered to have been assessed against this criterion if values of SSB and a good proxy for SSB MSY  (i.e. MSY B trigger ) are available from a stock assessment, and the stock is considered to have met the GES criterion if SSB > SSB MSY  (or appropriate proxy). Healthy age and size structure: in this case, the assumption is that a stock with sufficient numbers of old and large fish is healthy. However, this criterion is not sufficiently developed and no threshold for GES is known for this criterion. Therefore, it is not included. This has resulted in four assessment categories: Not assessed: no sufficient information available to assess status; F: status assessed based only on F in relation to F MSY; SSB: status assessed based only on SSB in relation to SSB MSY  (or some proxy, i.e. MSY B trigger ); F & SSB: status assessed based on both F and SSB. Due to the ongoing discussions of the criteria integration rules for Descriptor 3, the stocks are classified as: Stocks meeting both the available GES criteria for F and SSB  Stocks meeting only one of the available GES criteria, i.e. either F or SSB criteria are met  Stocks not meeting any of the available GES criteria, i.e. neither F nor SSB criteria are met   For those stocks for which adequate information is available to determine GES for fishing mortality (F) and/or reproductive capacity (SSB) a second distinction is made between: (1) stocks in good status based on both fishing mortality and reproductive capacity; (2) stocks in good status based on only one criteria (either because one of the two criteria are not in good status or data is only available for one criteria and it is in good status); and (3) stocks not in good status (either because one of the two criteria are not in good status or data is only available for one criteria and it is not in good status).   Total landing Landings information for the North-East Atlantic and the Baltic Sea is based on the Stock Assessment Graphs landings data for the assessed stocks, and in the International Council for the Exploration of the Sea (ICES) Official Nominal Catches, 2006-201 8 dataset in the case of unassessed stocks/landings. Fisheries nominal catch statistics are reported annually by the national offices. In cooperation with Eurostat and FAO, ICES prepares and publishes the Official Nominal Catch statistics dataset for the Northeast Atlantic (FAO major fishing area 27). SAG catches are used whenever available, as these take discards and potential area reporting issues into account, neither of which are reflected in the nominal catches. Landings information for the Mediterranean Sea and the Black Sea is based on the Food and Agriculture Organization (FAO) capture production dataset For the Mediterranean and Black Sea, the figure is based on 2018 landings data. In this case, it was not possible to use landings data from the assessments as these refer to GSAs which are not specified in the FAO capture production dataset, divided in larger aggregation areas. Only some of the species/taxa in the landings data can be considered 'commercial fish', which, for assessment purposes, may consist of several stocks. Only some of these stocks are covered by quantitative stock assessments such that their status can be assessed based on the above criteria.   Stock In the North-East Atlantic area, stocks are generally defined based on biological criteria and knowledge of population migration, mixing and spawning areas. For example, cod in the northeast Atlantic is currently considered to form sixteen different stocks, between which mixing is generally negligible. These stocks are found over multiple MSFD ecoregions, and some individual stock distributions cover more than one ecoregion. However, in this analysis each stock has been assigned to a single ecoregion (see Methodology). In the Mediterranean and Black Sea, on the other hand, stocks are mostly defined by management area because of a lack of biological knowledge. Because these stocks are based on a specific geographical area, most can be attributed to a specific MSFD (sub-)region. In the Mediterranean, assessments can refer to several stocks of the same species, but these stocks remain separate management and functional units.  
Indicator Specification
Archived
Status of marine fish and shellfish stocks in European seas The indicator tracks both the status of commercial fish stocks in European regional seas and the pressure exerted by fisheries on those stocks, as well as the quality of the information available. To that end, the following is reported: the status of marine fish and shellfish stocks based on the current level of exploitation and reproductive capacity; the importance of the (sub-)region, reflected by the total landings (as a proxy of catch) of fish from commercial fisheries in European seas per MSFD (sub-)region; the availability of appropriate information for the status assessment, as reflected by the proportion of those landings covered by quantitative stock assessments (i.e. the proportion providing the required indicators and their reference levels). Status of marine fish and shellfish stocks The MSFD requires GES to be achieved by 2020 (EC, 2008). According to the MSFD (Descriptor 3), three criteria are relevant to determining if a fish or shellfish stock has achieved GES:  (1) it should be exploited sustainably, consistent with high long-term yields; (2) it should have full reproductive capacity, to maintain stock biomass; and (3) a certain proportion of older and larger fish/shellfish should be maintained (or increased), as this is an indicator of a healthy stock. Sustainable exploitation: sustainably exploited stocks are stocks for which F is at or below levels that deliver MSY, i.e. F ≤ F MSY . Thus, a stock is considered to have been assessed against this criterion only if values for F and F MSY  are available, and the stock is considered to have achieved GES only if F ≤ F MSY . Reproductive capacity: in areas assessed by the International Council for the Exploration of the Seas (ICES), the criterion for sustainable reproductive capacity (SSB > SSB MSY ) has been changed, for pragmatic reasons, to SSB > MSY B trigger . SSB is consistently provided as part of ICES stock assessments, i.e. of the North-East Atlantic Ocean and Baltic Sea, but not, for the most part, by assessments of the Scientific, Technical and Economic Committee for Fisheries (STECF), i.e. of the Mediterranean and Black Sea stocks. Similarly to the above, a stock is considered to have been assessed against this criterion if values for SSB and a good proxy for SSB MSY  (i.e. MSY B trigger ) are available, and the stock is considered to have achieved GES only if SSB > SSB MSY  (or an appropriate proxy). Healthy age and size structure: in this case, the assumption is that a stock with sufficient numbers of old and large fish is healthy. However, this criterion is not sufficiently developed and no threshold for GES is known for this criterion. Therefore, it is not included. This has resulted in four assessment categories: not assessed: no sufficient information available to assess status; F: status assessed based only on F and F MSY; SSB: status assessed based only on SSB and SSB MSY  (or some proxy, i.e. MSY B trigger ); F and SSB: status assessed based on both F and SSB.   Because of ongoing discussions about the criteria integration rules for descriptor 3, the stocks are classified as: assessed stocks for which adequate information is available to determine GES based on F and SSB; assessed stocks for which insufficient information is available to determine GES based on F or SSB; assessed stocks for which insufficient information is available to determine GES according to both reference points F and SSB.   For those stocks for which adequate information is available to determine GES based on fishing mortality (F) and/or reproductive capacity (SSB), a second distinction is made between (1) stocks in good status based on both fishing mortality and reproductive capacity; (2) stocks in good status based on only one criteria (either because one of the two criteria is in good status or data are available for only one criteria and it is in good status); and (3) stocks not in good status (either because one of the two criteria is not in good status or data are available for only one criteria and it is not in good status). Total landings Landings information for the North-East Atlantic and the Baltic Sea is based on the ICES  official nominal catches, 2006-2017 data set . Fisheries nominal catch statistics are reported annually by national offices. In cooperation with Eurostat and the Food and Agriculture Organization of the United Nations (FAO), the ICES prepares and publishes the official nominal catch statistics data set for the North-East Atlantic (FAO major fishing area 27). Landings information for the Mediterranean Sea and the Black Sea is based on the FAO's capture production data set. For the Mediterranean and Black Seas, the figures are based on 2016 landings data. Only some of the species/taxa in the landings data can be considered 'commercial fish', which, for assessment purposes, may consist of several stocks. Only some of these stocks are covered by quantitative stock assessments such that their status can be assessed based on the above criteria. Stocks In the North-East Atlantic area, stocks are generally defined based on biological criteria and knowledge of population migration, mixing and spawning areas. For example, cod in the North-East Atlantic is currently considered to form 16 different stocks, between which mixing is generally negligible. These stocks are found over multiple MSFD ecoregions, and some individual stock distributions cover more than one ecoregion. However, in this analysis each stock has been assigned to a single ecoregion (see Methodology). In the Mediterranean and Black Seas, on the other hand, stocks are mostly defined by management area because of a lack of biological knowledge. Because these stocks are based on a specific geographical area, most can be attributed to a specific MSFD (sub-)region.
Indicator Specification
Archived
Status of marine fish and shellfish stocks in European seas The indicator tracks both the status of commercial fish stocks in European regional seas and the pressure exerted by fisheries on those stocks, as well as the quality of the information available. To that end, the following is reported: the status of marine fish and shellfish stocks based on the current level of exploitation and reproductive capacity; the importance of the (sub-)region, reflected by the total landings (as a proxy of catch) of fish from commercial fisheries in European seas per MSFD (sub-)region, and the availability of appropriate information for the status assessment, as reflected by the proportion of those landings covered by quantitative stock assessments (i.e. the proportion providing the required indicators and their reference levels). Status of marine fish and shellfish stocks The MSFD requires 'Good Environmental Status' to be achieved by 2020 (EC, 2008). According to the MSFD (Descriptor 3), three criteria are relevant to determining if a fish or shellfish stock has achieved GES: Sustainable exploitation: sustainably exploited stocks are stocks for which F is at or below levels that deliver MSY, i.e. F ≤ F MSY . Thus, a stock is considered to have been assessed against this criterion only if values for F and F MSY  are available ,  and the stock is considered to have achieved GES only if F ≤ F MSY . Reproductive capacity: in areas assessed by the ICES, the criterion for sustainable reproductive capacity (SSB > SSB MSY ) has been modified, for pragmatic reasons, to SSB > MSY B trigger . SSB is consistently provided as part of ICES stock assessments, i.e. of the North-East Atlantic and Baltic Sea, but not, for the most part, by STECF assessments, i.e. of the Mediterranean and Black Sea stocks. Similarly to the above, a stock is considered to have been assessed against this criterion if values of SSB and a good proxy for SSB MSY are available, and the stock is considered to have achieved GES only if SSB > SSB MSY  (or appropriate proxy). Healthy age and size structure: in this case, the assumption is that a stock with sufficient numbers of old and large fish is healthy and that the more older/larger fish there are, the better the health of the fish stock. However, this criterion is not sufficiently developed and no threshold for GES is known for this criterion. Therefore, it is not included. This has resulted in four assessment categories: Not: no sufficient information available to assess status; F: status assessed based only on F and F MSY; SSB: status assessed based only on SSB and SSB MSY (or some proxy, i.e. MSY B trigger ); F & SSB: status assessed based on both F and SSB. Total landings Landings are based on the ICES Official Nominal Catches data set and the Food and Agriculture Organization of the United Nations (FAO) 'GFCM (Mediterranean and Black Sea) capture production' annual statistics. The statistics comprise catch data reported by country, by species and by area or division. Only some of the species/taxa in the landings data can be considered 'commercial fish', which, for assessment purposes, may consist of several stocks. Only some of these stocks are covered by quantitative stock assessments such that their status can be assessed based on the above criteria. Stocks In the North-East Atlantic area, stocks are generally defined based on biological criteria and knowledge of population migration, mixing and spawning areas. For example, cod is currently considered to form eight different stocks, i.e. Sub-areas I and II (Northeast Arctic), Division Va (Iceland grounds), Sub-division Vb1 (Faroe Plateau), Sub-area IV and Divisions VIId and IIIa West, Sub-divisions 22-24 (Western Baltic Sea), Division VIa (West of Scotland), Division VIIa (Irish Sea) and Divisions VIIe-k (Western English Channel), between which mixing is negligible. These eight stocks cover five MSFD (sub-)regions, i.e. the Baltic Sea, the North Sea, the Celtic Sea, the Barents Sea and the Icelandic waters. In the Mediterranean and Black Sea, on the other hand, stocks are mostly defined by management area because of a lack of biological knowledge. Because these stocks are based on a specific geographical area, most can be attributed to a specific MSFD (sub-)region.

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For references, please go to https://www.eea.europa.eu/data-and-maps/data/external/ices-stock-database or scan the QR code.

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