Extended Data Fig. 2: Trends in the planktonic concentrations (a) and stoichiometries (b) of carbon (C), nitrogen (N) and phosphorus (P) at different seawater depths.
From: Global-scale shifts in marine ecological stoichiometry over the past 50 years
Δ represents the amount of change in the planktonic C, N, and P concentrations at different seawater depths relative to that of the surface water. Predictor variables (C, N, P) plus lowercase 0 represent the mean value of the predictor variable at the seawater surface. Predictor variables (C:N, C:P, N:P) plus lowercase 0 represent the median value of the predictor variable at the seawater surface. The solid lines and shading area represent the mean for ΔC, ΔN, and ΔP or median for ΔC:N, ΔC:P, and ΔN:P and 95% confidence intervals of the predictor variables, respectively. Predictor variables divided by depth represent the change coefficient of the predictor variables with increasing seawater depth in the epipelagic and mesopelagic zones. ***, p < 0.001.
