Atlantic Cod, North Sea, Demersal gill net
- Content last updated
- 11 November 2019
- Cod (Gadus morhua) in Subarea 4, Division 7.d, and Subdivision 20 (North Sea, eastern English Channel, Skagerrak)
- European Union
- Stock Status
Very high risk
North Sea cod has been scored a very high risk. This is because this year’s ICES advice places the stock outside safe biological limits.
Fishing mortality decreased from very high levels in the period from 2003 to 2013 and from 2012 until 2016 it was stable above the at risk level (Fpa). However, since 2016 the fishing mortality has increased and is now assessed as outside safe biological limits (above Flim). Although the spawning stock biomass has been on an upward trajectory since 2006 the most recent assessment indicates that this increase plateaued in 2015-6 and has shown a downward trajectory since to being outside safe biological limits (below Blim) in 2019.
The recruitment of young fish has been low since 1998 and in 2018 is estimated to be very low.
The management of the North Sea cod has been scored a moderate risk. The stock is assessed annually by ICES, and control measures over the past decade seemed to be allowing the stock to recover. However, the recent trend in spawning stock biomass has been downwards resulting in advice for a 61% reduction in Total Allowable Catch (TAC).
There is some uncertainty as to the effect of the implementation of the Landings Obligation has on control and accounting for catches.
This fishery is scored as a moderate risk because of the potential of the gear to cause bycatch. Most demersal static net fisheries have been found to have relatively low discards, less than 15-20% by weight. In many areas static nets have been found to catch an occasional bycatch of small cetaceans, most frequently harbour porpoise.
This fishery is scored as a low risk due to the limited impact on seafloor habitats compared to other gears. Typically, the impact of static demersal gears on the sea floor will largely be limited to the penetration and abrasion from anchors when they are shot and hauled.