The suboxic zone lies between the oxic and anoxic zones, where the concentrations of both dissolved oxygen and sulfide are low. Sediment pore waters are generally driven to suboxic conditions via microbial degradation of organic matter, and these intermediate waters commonly host the biogeochemical cycling of nitrogen, manganese, and iron. Suboxic pore waters modify the chemistry and mineralogy of sediments between their deposition and eventual burial and represent an important component of early diagenesis.
KeywordsOxygen Redox Diagenesis Organic carbon Microbes Respiration Pore waters
References and Further Reading
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- Oakley BB, Francis CA, Roberts KJ, Fuchsman CA, Srinivasan S, Staley JT (2007) Analysis of nitrite reductase (nirK and nirS) genes and cultivation reveal depauperate community of denitrifying bacteria in the Black Sea suboxic zone. Environ Microbiol 9:118–130. https://doi.org/10.1111/j.1462-2920.2006.01121.xCrossRefGoogle Scholar