An evolving view on biogeochemical cycling of iron

Biogeochemical cycling of iron is crucial to many environmental processes, such as ocean productivity, carbon storage, greenhouse gas emissions and the fate of nutrients, toxic metals and metalloids. Knowledge of the underlying processes involved in iron cycling has accelerated in recent years along...

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Bibliographic Details
Published in:Nature reviews. Microbiology Vol. 19; no. 6; pp. 360 - 374
Main Authors: Kappler, Andreas, Bryce, Casey, Mansor, Muammar, Lueder, Ulf, Byrne, James M, Swanner, Elizabeth D
Format: Journal Article
Language:English
Published: England Nature Publishing Group 01.06.2021
Subjects:
Ammonium
Biogeochemical cycles
Biogeochemistry
Carbon sequestration
Complexity
Contaminants
Cycles
Emissions
Greenhouse gases
Heavy metals
Iron
Metalloids
Microorganisms
Nutrients
Oxidation
Speciation
ISSN:1740-1526, 1740-1534, 1740-1534
Online Access:Get full text
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Summary:Biogeochemical cycling of iron is crucial to many environmental processes, such as ocean productivity, carbon storage, greenhouse gas emissions and the fate of nutrients, toxic metals and metalloids. Knowledge of the underlying processes involved in iron cycling has accelerated in recent years along with appreciation of the complex network of biotic and abiotic reactions dictating the speciation, mobility and reactivity of iron in the environment. Recent studies have provided insights into novel processes in the biogeochemical iron cycle such as microbial ammonium oxidation and methane oxidation coupled to Fe(III) reduction. They have also revealed that processes in the biogeochemical iron cycle spatially overlap and may compete with each other, and that oxidation and reduction of iron occur cyclically or simultaneously in many environments. This Review discusses these advances with particular focus on their environmental consequences, including the formation of greenhouse gases and the fate of nutrients and contaminants.
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ISSN:1740-1526
1740-1534
1740-1534
DOI:10.1038/s41579-020-00502-7