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Anoxia pp 17-38 | Cite as

Biogeochemical Reactions in Marine Sediments Underlying Anoxic Water Bodies

  • Tina Treude
Chapter
Part of the Cellular Origin, Life in Extreme Habitats and Astrobiology book series (COLE, volume 21)

Abstract

This chapter provides an overview of biogeochemical reactions in marine sediments underlying temporal or permanent hypoxic and anoxic water bodies in modern and past oceans. The aim of this review is to describe the chemical environment that organisms inhabiting surface sediments encounter during oxygen depletion or deficiency. It also introduces important metabolic processes that govern or are governed by different redox settings. In Sect. 2, biogeochemical processes in sediments underlying fully oxygenated water bodies are elucidated. Section 3 explains differences in biogeochemical reactions in hypoxic and anoxic environments as opposed to oxygenated environments. Modern oxygen minimum zones and permanent anoxic environments are introduced. In Sect. 4 biogeochemical processes during past anoxic events and during the era before the first rise of oxygen are reviewed.

Keywords

Sulfate Reduction Biogeochemical Process Aerobic Respiration Oxygenic Photosynthesis Organic Matter Degradation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer Science+Business Media B.V.  2012

Authors and Affiliations

  1. 1.Department of Marine BiogeochemistryLeibniz Institute of Marine Sciences (IFM-GEOMAR)KielGermany

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