Growth rate varies widely among cod stocks.
Large changes in growth rate have also been observed within many cod stocks. This variation in growth rate has important consequences for the productivity of these stocks. An understanding of the causes of variation in growth rate among and within cod stocks may lead to improved forecasts of stock biomass and productivity, and is required to assess the likely impacts of climate change on cod populations. Tests of explanatory variables for interannual variation in growth within cod stocks. Ideally the same suite of potential explanatory variables should be tested for all stocks.