The differing RPS resulted in very different levels of recruitment when applied as α in a hockey stick stock recruit model ( Fig. 4). The much larger RPS for plaice results in much greater recruitment than for cod. The highest levels of recruitment for plaice were during Cold_2 while for cod it is during Warm_1. Maximum recruitment for cod in Warm_1 was 16 times that of the Cold_2 period. For plaice, maximum recruitment during the Cold_2 period was 3.5 times that of Warm_1. For both cod and plaice the second highest level of recruitment was during Cold_1