Characteristics of iron cycle and its driving mechanism during the ...
2022年1月1日 · Here, we investigated the key microbial functional genes involved in Fe (II) oxidation and Fe (III) reduction and the associated factors affecting the soil during the development of biological soil crusts (BSCs), which are among the most important landscapes in desert ecosystems.
16.4G: The Iron Cycle - Biology LibreTexts
2024年11月23日 · Iron (Fe) follows a geochemical cycle like many other nutrients. Iron is typically released into the soil or into the ocean through the weathering of rocks or through volcanic eruptions. The Terrestrial Iron Cycle: In terrestrial ecosystems, plants first absorb iron through their roots from the soil.
An evolving view on biogeochemical cycling of iron - Nature
2021年2月1日 · 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...
Iron cycling and isotope fractionation in terrestrial ecosystems
2019年3月1日 · Iron phases and possible transformation processes in soil-plant systems. Square boxes represent solid phases, while oval boxes represent dissolved species. Processes are grouped according to oxic/anoxic conditions, the latter being arranged from top to bottom with the red box encompassing the oxic conditions, the blue box the anoxic conditions ...
Iron cycle - Wikipedia
The cycling of iron between its +2 and +3 oxidation states is referred to as the iron cycle. This process can be entirely abiotic or facilitated by microorganisms , especially iron-oxidizing bacteria .
Biogeochemical cycles of iron: Processes, mechanisms, and …
2024年11月15日 · The iron (Fe) biogeochemical cycle is critical for abiotic and biological environmental processes that overlap spatially and may compete with each other. The development of modern molecular biology technologies promoted the understanding of the electron transport mechanisms of Fe-cycling-related microorganisms.
Earth's Ferrous Wheel | Learn Science at Scitable - Nature
All organisms on Earth ride upon a "ferrous wheel" made of different forms of iron that are essential for life. Biogeochemical cycles describe pathways by which chemical elements move through...
Coupled iron cycling and organic matter transformation across …
2023年8月24日 · Soils and sediments are major reservoirs of organic matter (OM), whose dynamic turnover has a major impact on carbon cycling and global climate. OM in soils and sediments is predominantly...
5.3: Iron cycle - Biology LibreTexts
2024年3月31日 · The iron cycle is relatively simple in some ways, given that it only involves two oxidation states, +2 + 2 and +3 + 3, which we can specifically refer to as ferrous iron and ferric iron, respectively, or Fe (II) Fe (II) and Fe (III) Fe (III) (Fig. 5.4 5.4).
Biogeochemical Iron Cycle - Microbiology Notes
2021年3月21日 · The iron cycle features the interchange of ferrous iron (Fe 2+) to ferric iron (Fe 3+). In environments that are fully aerated with a neutral pH, iron is present primarily as insoluble minerals of either oxidation state.