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. 2016 Jul 27;11(7):e0158487. doi: 10.1371/journal.pone.0158487

Fig 2. Birth-year NAO effect on cod biomass.

Fig 2

Panels (A) and (B) show regression coefficients representing the effect of a 1-unit increase in birth-year NAO on a cod cohort as it matures from age 1 to 6 for the Gulf of Maine and Georges Bank stocks, respectively. Each coefficient comes from a separate multiple regression model (see Eq 1). 90% confidence interval shown. Panels (C) and (D) show observed surveyed log adult biomass (ages 2–6) (black line), predicted log adult biomass using only secular time trends (orange line), and predicted log adult biomass using both secular time trends and observed NAO (green line). Decomposition follows Eqs 2 and 3. Panel (E) shows observed NAO variation.