Brandon Stephens

Jun 30, 2023 | frontiersin.org | Mustafa Yucel |Brandon Stephens |Mustafa Mantikci

1. IntroductionThe oxygen minimum zone (OMZ), first proposed by Cline and Richards (1972), is defined as dissolved oxygen (DO)-deficient mesopelagic waters. Widespread and intensive OMZ has an impact on the biogeochemical cycles. Anammox and denitrification occur in hypoxic conditions, especially under conditions of DO <5 μmol kg−1 (Gruber, 2011; Bristow et al., 2017).