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The molar ratio of (a) POC:PON, (b) POC:POP and (c) PON:POP under different combinations of salinity (0, 5, 12 and 24 psu), light (circle = 10, triangle = 130 μmol photons m−2 s−1), and nutrient supply (N:P molar ratio = 16, 80, 2 and 10, left to right panel) conditions. The lines are predicted values from the GLMs with 95% confidence intervals.
