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Fact Sheet Title Fact Sheet |
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Atlantic Cod - Grand Bank |
| Data Ownership | This document provided, maintained and owned by Northwest Atlantic Fisheries Organization (NAFO) , is part of NAFO Summary Sheets data collection. |
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ident Block | ident Block | | Species List: | Species Ref: en - Atlantic cod, fr - Morue de l'Atlantique, es - Bacalao del Atlántico, zh - 大西洋鳕, ru - Треска атлантическая |
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| ident Block Atlantic Cod - Grand Bank Map tips - Click on to turn layers on and off
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fao Div |
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21.3.N | Atlantic, Northwest / 21.3.N |
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21.3.O | Atlantic, Northwest / 21.3.O |
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Aq Res | Biological Stock: Yes Value: Regional Management unit: Yes Reference year: 2020
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Considered a management unit: An aquatic resource or fishery is declared as [Fishery] Management Unit if it is effectively the focus for the application of selected management methods and measures, within the broader framework of a management system. According to the FAO Glossary for Responsible Fishing, "a Fishery Management Unit (FMU) is a fishery or a portion of a fishery identified in a Fishery Management Plan (FMP) relevant to the FMP's management objectives." FMU's may be organised around fisheries biological, geographic, economic, technical, social or ecological dimensions , and the makeup and attribute of a fishery management unit depends mainly on the FMP's management objectives. |
Jurisdictional distribution: Jurisdictional qualifier (e.g. "shared", "shared - highly migratory") of the aquatic resource related with its spatial distribution. |
Environmental group: Classification of the aquatic resource according to the environmental group (e.g. pelagic invertebrate, or demersal fish) to which the species belong. |
Reference Year: The Reference Year is the last year considered in the stock assessment and/or fishery status. |
| | | | Aq Res State Trend The spawning biomass increased noticeably between 2010 and 2015 but has subsequently declined sharply and the 2020 estimate of 7279 t represents only 12% of Blim (60,000 t). The relatively strong 2006 year-class left the population after 2018, which had some influence on the most recent SSB estimates but did not influence overall stock status. Subsequent year-classes are much weaker, suggesting that the medium-term prospects for the stock are not good. Fishing mortality values over the past decade have been low and well below Flim (0.3). Lack of catch-at-age data in 2020 prevented the estimation of stock size for 2021, however it should not be markedly different than the 2020 estimate. Habitat Bio Climatic Zone: Temperate. Bottom Type: Unspecified. Depth Zone: Slope - Deepslope (500 m - 1000 m). Horizontal Dist: Neritic. Vertical Dist: Demersal/Benthic. Geo Dist Geo Dist: Straddling between High Seas and EEZ Water Area Overview | Water Area Overview Atlantic Cod - Grand Bank
fao Div | 21.3.N: Atlantic, Northwest / 21.3.N | 21.3.O: Atlantic, Northwest / 21.3.O |
| | | | Water Area Overview |
Water Area OverviewAtlantic Cod - Grand Bank Aq Res Struct Biological Stock: Yes Exploit A moratorium was implemented in 1994. Catches since that time are by-catch in other fisheries. Recent catch estimates and TACs (‘000 tonnes) are: Effects of the fishery on the ecosystemNo specific information is available. There is no directed fishery for this stock. General impacts of fishing gears on the ecosystem should be considered. Areas of Divs. 3NO have been closed to protect sponges and corals. Bio Assess Results Ref Point B lim: 60 000 t of spawning biomass (SC, 1999) F lim (=F msy): 0.3 (SC, 2011) Projection Although projections of the stock were not performed because of various limitations identified with the assessment model, the poor strength of year-classes subsequent to 2006 suggests that the medium-term prospects for the stock are not good. Assess Models Analytical assessment Results A virtual population analysis model was used, and the results were consistent with the previous assessment. Input data comes from research surveys and commercial removals. The next assessment is planned for 2024. Fishing MortalityBiomassRecruitmentHuman impactMainly bycatch related fishery mortality has been documented. Other sources (e.g. pollution, shipping, oil-industry) are undocumented. Biological and environmental interactionsProductivity of this stock was above average during the warm 1960s. During the cold 1990s, productivity was very low and surplus production was near zero. The Grand Bank (3LNO) EPU is currently experiencing low productivity conditions and biomass has declined across multiple trophic levels and stocks since 2014. Sci Advice Special commentsThe assessment model was accepted for stock status purposes, but a decision was made to not project the stock forward because of the limited age range (ages 2-12) considered in the model, as well as potential diagnostic issues (including directional retrospective patterns, trends in residuals in recent years). Limitations of the current assessment model suggest a need to explore more flexible models capable of dealing with uncertainty in model inputs (e.g., catch-at-age) and that do not impose assumptions about stationary natural mortality. Management Management unit: Yes Advice Recommendation for 2022 – 2024No directed fishing in 2022 to 2024 to allow for stock rebuilding. Bycatch of cod in fisheries targeting other species should be kept at the lowest possible level. Projections of the stock were not performed but given the poor strength of all year-classes subsequent to 2006, the stock will not reach Blim in the next three years. Objectives General convention objectives are applied in conjunction with an Interim Conservation Plan and Rebuilding Strategy adopted in 2011 (NAFO/FC Doc. 11/22). The long-term objective of this plan is to achieve and to maintain the spawning stock biomass in the “safe zone” of the NAFO PA framework (FC Doc. 04/18), and at or near Bmsy. Stock definition for management purposesThe stock occurs in Divs. 3NO, with fish occupying shallow parts of the bank, particularly the southeast shoal area (Div. 3N) in summer and on the slopes of the bank in winter. Sources Northwest Atlantic Fisheries Organization (NAFO) Scientific Council Documents. SCR Doc. 21/04 and SCS Docs. 21/05, 06, 08, 09, 10, 13. https://www.nafo.int/Library/Science/SC-DocumentsNorthwest Atlantic Fisheries Organization (NAFO). 2021. Report of the Scientific Council Meeting, 27 May -11 June 2021. NAFO SCS Doc. 21/14Rev. https://www.nafo.int/Portals/0/PDFs/sc/2021/scs21-14REV.pdfNorthwest Atlantic Fisheries Organization (NAFO). 2015. Conservation and Enforcement Measures. NAFO/FC Doc. 15/01. http://archive.nafo.int/open/fc/2015/fcdoc15-01.pdfNorthwest Atlantic Fisheries Organization (NAFO). 2011. Interim 3NO Cod Conservation Plan and Rebuilding Strategy (NCEM Article 9). 33rd Annual Meeting, September 2011. NAFO/FC Doc. 11/22. https://www.nafo.int/Portals/0/PDFs/fc/2011/fcdoc11-22.pdfNorthwest Atlantic Fisheries Organization (NAFO). 2008. Resolution on the Interpretation and Implementation of the Convention on the Future Multilateral Cooperation in the Northwest Atlantic Fisheries. 30th Annual Meeting, September 2008. NAFO/GC Doc. 08/3. http://archive.nafo.int/open/gc/2008/gcdoc08-03.pdfNorthwest Atlantic Fisheries Organization (NAFO). 2004. NAFO Precautionary Approach Framework. Annual Meeting, September 2004. NAFO/FC Doc. 04/18. https://archive.nafo.int/open/fc/2004/fcdoc04-18.pdf |
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