In the case of mackerel, the last strong year class we saw was in 1999, which was the basis of my thesis. Since that time, we have had moderate cohorts. Since the beginning of 2010, there have been only small cohorts. For at least 10 or 12 years, recruitment has been very low and the number of adults has been declining.
In the case of spring herring in the southern gulf, it's been longer. We've seen a decline since the early 2000s. Herring is a species with two spawning stocks, one in the spring and one in the fall. Often warm periods are unfavourable for spring herring, not surprisingly.