期刊
ENVIRONMENTAL CHEMISTRY
卷 7, 期 5, 页码 399-405出版社
CSIRO PUBLISHING
DOI: 10.1071/EN10040
关键词
bioenergetics; biogeochemistry; micro-ecology
资金
- German Research Foundation (DFG) [KA 1736/16-1]
- European Marie Curie Reintegration Grant (MC-ERG) [PERG04-GA-2008-239252]
- Stifterverband der Wissenschaft
Our knowledge on how microbial ecosystems function profits from the support of biogeochemical concepts which describe the cycling of elements through various geochemical gradients. Using the example of the iron cycle in freshwater sediments, we propose a theoretical framework that describes the dynamic interactions between chemical and microbial Fe-II oxidation and Fe-III reduction, their spatial location and how they are affected by changing environmental conditions. This contribution emphasises the complexity ecological research faces when dealing with heterogeneous and dynamic natural systems. Our concept aims to provide further insights into how flows of energy and matter are controlled during microbial and chemical Fe redox transformations and how various key variables, such as substrate availability and competition as well as thermodynamic and kinetic parameters, affect flow directions.
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