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Overlooked runaway feedback in the marine nitrogen cycle: the vicious cycle

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Academic year: 2017

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Fig. 1. Feedbacks in the marine nitrogen cycle. Negative feedbacks (black) reduce the initial perturbation
Fig. 2. N 2 fixation rates (mmol N m −2 yr −1 ) calculated for the (a) BASELINE, (b) NOFIX, (c) IRON and (d) DOM simulation
Fig. 4. NO − 3 uptake of diazotrophs (mmol N m −2 yr −1 ) in the (a) BASELINE (b) IRON and (c) DOM simulations
Fig. 5. Temporal evolution of (a) simulated oceanic N inventory (changes in %), (b) global denitrification rates (Tmol N yr −1 ), (c) ratio of global denitrification to global N 2 fixation (mol : mol)
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