Highlights • Fixed nutrient ratio not appropriate to simulate the chemical conditions in the Mediterranean Sea.• A simple approach allows to apply the ‘line of frugality’ to biogeochemical models.• Nutrient… Click to show full abstract
Highlights • Fixed nutrient ratio not appropriate to simulate the chemical conditions in the Mediterranean Sea.• A simple approach allows to apply the ‘line of frugality’ to biogeochemical models.• Nutrient and plankton simulations improve with the variable internal nutrient ratio.
               
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