Erratum: Global nitrogen cycle: Critical enzymes, organisms, and processes for nitrogen budgets and dynamics (Chemical Reviews (2020) 120:12 (5308-5351) DOI: 10.1021/acs.chemrev.9b00613)
(Figure Presented) Figure 4. Cycle of biologically driven N transformations that occur in natural and human-inﬂuenced terrestrial and marine environments. Nitrogen (N2) ﬁxation (step 1) and N assimilation (from ammonium, nitrate, or organic N, step 2) are anabolic processes, whereas mineralization (step 3), nitriﬁcation (steps 4−6), DNRA (steps 7, 15), denitriﬁcation (steps 7−11), and anammox (anaerobic ammonium oxidation, steps 12−14) are (or are a consequence of) catabolic processes. Abiotic sources of ﬁxed N enter the biological N cycle as ammonium and nitrate. Note, the typo “nitrate oxidation” above arrow 7 in the original published version of Figure 4 has been corrected to display “nitrate reduction” in the revised ﬁgure shown here. © 2020 American Chemical Society. All rights reserved.