Is the effect of the NAO on North-east Arctic cod, Gadus morhua, recruitment stock-dependent?
There is considerable interest in understanding the effect of the North Atlantic Oscillation (NAO) on recruitment to North Atlantic cod stocks. An earlier analysis of data for the North-east Arctic cod stock showed that, while there is an empirical relationship between recruitment and the NAO over the period 1973–96, this relationship was absent over the period 1946–72. It has recently been suggested that the effect of the NAO on recruitment depends on the size of the spawning stock. Here, the possibility that this explains the earlier result for North-east Arctic cod is tested and rejected.
Document Type: Short Communication
Publication date: September 1, 2007