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Atlantic cod

Gadus morhua

What to check for

Location

West Greenland: Offshore: All areas

Technical location

21 - Atlantic, Northwest, NAFO 1

Caught by

Bottom trawl (otter)

Rating summary

West Greenland offshore cod is being overfished and is depleted. Few appropriate management measures are in place. There is no management plan and catch limits have substantially exceeded scientific advice. Most offshore west Greenland cod is caught by trawling, which is likely to cause some damage to the seabed.Rating last updated July 2023.

How we worked out this Rating

References

Blicher, ME and Hammeken, Arboe N, 2021. Atlas of Vulnerable Marine Ecosystem (VME) indicators observed on Bottom Trawl Surveys in Greenland waters during 2015-2019. Technical Report nr. 113, Greenland Institute of Natural Resources, Greenland. ISBN 87-91214-91-2. https://natur.gl/wp-content/uploads/2021/01/113-Atlas-of-Vulnerable-Marine-Ecosystem-VME-indicators-observed-on-Bottom-Trawl-Surveys-in-Greenland-waters-during-2015-2019.pdf

Eigaard, O. R., Bastardie, F., Breen, M., Dinesen, G. E., Hintzen, N. T., Laffargue, P., Mortensen, L. O., Nielsen, J. R., Nilsson, H. C., O- Neill, F. G., Polet, H., Reid, D. G., Sala, A., Skold, M., Smith, C., Sorensen, T. K., Tully, O., Zengin, M. and Rijnsdorp, A. D., 2016. Estimating seabed pressure from demersal trawls, seines, and dredges based on gear design and dimensions. ICES Journal of Marine Science, 73:1, pp. i27- i43. https://doi.org/10.1093/icesjms/fsv099.

Froese, R., N. Demirel, G. Coro, K.M. Kleisner and H. Winker, 2017. Estimating fisheries reference points from catch and resilience. Fish and Fisheries 18(3):506-526. Available at https://onlinelibrary.wiley.com/doi/abs/10.1111/faf.12190.

Government of Greenland, 2023. Reporting: Bycatch. Available at https://gflk.gl/en/reporting/bycatch/ [Accessed on 28.07.2023].

Hiddink, J., Jennings, S., Sciberras, M., Szostek, C.L., Hughes, K.M., Ellis, N., Rijnsdorp, A.D., McConnaughey, R.A., Mazor, T., Hilborn, R., Collie, J.S., Pitcher, C.R., Amoroso, R.O., Parma, A.M., Suuronen, P. and Kaiser, M.J. 2017. Global analysis of depletion and recovery of seabed biota after bottom trawling disturbance. PNAS. 114:31, pp. 8301-8306. https://doi.org/10.1073/pnas.1618858114.

ICES, 2016. Stock Annex: Cod (Gadus morhua) in NAFO Subdivisions 1A–E, off-shore (West Greenland). https://ices-library.figshare.com/articles/report/Stock_Annex_Cod_Gadus_morhua_in_NAFO_Subdivisions_1A_E_offshore_West_Greenland_/18622265.

ICES, 2021. Cod (Gadus morhua) in NAFO divisions 1.A-E, offshore (West Greenland). In Report of the ICES Advisory Committee, 2021. ICES Advice 2021, cod.21.1a-e, https://doi.org/10.17895/ices.advice.7739.

ICES, 2022. Northwestern Working Group (NWWG). ICES Scientific Reports. 4:42. 755pp. http://doi.org/10.17895/ices.pub.19771381.

ICES, 2023. Cod (Gadus morhua) in NAFO Subarea 1 (offshore) (West Greenland offshore spawning cod). In Report of the ICES Advisory Committee, 2023. ICES Advice 2023, cod.21.1.osc, https://doi.org/10.17895/ices.advice.23266232.

Kennelly, S. J. & Broadhurst, M. K., 2021. A review of bycatch reduction in demersal fish trawls. Rev Fish Biol Fisheries 31, 289–318. https://doi.org/10.1007/s11160-021-09644-0.

Kynoch, R., Fryer, R. & Neat, F., 2015. A simple technical measure to reduce bycatch and discard of skates and sharks in mixed-species bottom-trawl fisheries. ICES J Mar Sci,72(6):1861.

Merkel, F.R. 2010. Light-induced bird strikes on vessels in Southwest Greenland. Technical Report No. 84, Pinngortitaleriffik, Greenland Institute of Natural Resources. Available at https://natur.gl/wp-content/uploads/2010/01/84-Light-induced-bird-strikes-on-vessels-in-Southwest-Greenland.pdf.

Silva, F., Ellis, J. & Catchpole, T., 2012. Species composition of skates (Rajidae) in commercial fisheries around the British Isles and their discarding patterns. J Fish Biol., 80:1678–1703.

van Denderen, P. et al., 2015. Similar effects of bottom trawling and natural disturbance on composition and function of benthic communities across habitats. Mar Ecol Prog Ser. 2015;541:31–43.

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