Fig 7
Results of the regular GAMs for the seasonal data during summer (June and August) assuming a Gaussian error distribution; East Sea in 1985 (a), 1995 (b), 2002 (c), and West Sea in 1985 (d), 1995 (e), 2002 (f), South Sea in 1985 (g), and 1995 (h); temperature (Temp10, °C), salinity (Sal10, psu), and DO (DO10, ml/L) at the 10-m depth layer and zooplankton biomass (Zoop, Log10 mg/m3). The difference between 10 m and 50 m depth layer on the temperature (Temp1050, °C), salinity (Sal1050, psu), DO (DO1050, ml/L) are represented as the mixing index in the ocean. The solid lines represent the main effects of the independent variables. The dotted lines represent the 95 % confidence intervals