Fig. 12. Multiyear record of oceanographic conditions during spring/summer in the central Labrador Sea basin. (A) mixed layer depth: slope (b) = -0.852 m y^-1, correlation coef. (r) = 0.26, significance (p) = 0.44, (B) ratio of NO₃:SiO₃ at 100 ± 20 m: b = 0.0156 y^-1, r = 0.53, p = 0.06, (C) NO₃ concentration at 100 ± 20 m: b = 0.0897 mmol m^-3 y^-1, r = 0.34, significance (p) = 0.25, (D) SiO₃ concentration at 100 ± 20 m: b = -0.0157 mmol m^-3 y^-1, r = 0.10, p = 0.74.