Iron (hydr)oxides are commonly found in soils and sediments in a wide variety of forms ranging from poorly- to highly-ordered oxides. The structure, composition and degree of crystallinity of these minerals vary greatly depending on the physical and chemical conditions of their surroundings. The transformation of Fe (hydr) oxides under microbial Fe(III)-reducing and chemical Fe(II)-oxidizing conditions is well characterized. However, Fe(II) oxidation in anaerobic environments by bacteria that couple Fe(II) oxidation to nitrate reduction remains poorly understood. Linking geochemical processes to changes in microbial community composition and activity is crucial for revealing the fate of nitrogen and carbon in soils and sediments, and elucidating key biogeochemical features that govern nitrate-dependent Fe(II) oxidation.<br/>

Role of microbial communities in linking Fe (hydr)oxide transformation and nutrient cycling

249th National Meeting (2015)

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