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DOI	10.1038/s41561-021-00742-z
	A biogeochemical–hydrological framework for the role of redox-active compounds in aquatic systems
	Peiffer S.; Kappler A.; Haderlein S.B.; Schmidt C.; Byrne J.M.; Kleindienst S.; Vogt C.; Richnow H.H.; Obst M.; Angenent L.T.; Bryce C.; McCammon C.; Planer-Friedrich B.
发表日期	2021
ISSN	17520894
起始页码	264
结束页码	272
卷号	14 期号:5
英文摘要	Redox-driven biogeochemical element cycles play a central role in converting organic matter in aquatic ecosystems. They also perform key functions such as removing nitrate, mitigating the formation of greenhouse gases and weakening the effects of contaminants. Recent research has revealed the presence of redox-active compounds in these ecosystems with hitherto unknown redox properties. These substances are metastable (that is, non-equilibrium solid phases), which can both donate and accept electrons. They are highly redox reactive and recyclable and may act as biogeobatteries by temporarily storing electrons. Their lifetime, however, is limited, and with time they become more crystalline and less reactive. In this Review, we argue that these redox-active metastable phases require activation by fluctuating redox conditions to maintain their high reactivity. In aquatic ecosystems, switching between oxidizing and reducing conditions can be achieved only through hydrological perturbations at hydrological interfaces (for example, water level fluctuations). We present a novel framework that links microscale biogeochemical processes to large-scale hydrological processes, and discuss implications and future research directions for biogeochemical element cycles in aquatic systems exposed to frequent hydrological disturbances. © 2021, Springer Nature Limited.
英文关键词	aquatic ecosystem; aquatic environment; biogeochemical cycle; biogeochemistry; organic matter; pollutant source; redox conditions
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206947
作者单位	Department of Hydrology, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany; Geomicrobiology, Center for Applied Geoscience, University of Tübingen, Tübingen, Germany; Environmental Mineralogy, Center for Applied Geoscience, University of Tübingen, Tübingen, Germany; Microbial Ecology, Center for Applied Geoscience, University of Tübingen, Tübingen, Germany; Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany; Experimental Biogeochemistry, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany; Environmental Biotechnology Group, Center for Applied Geoscience, University of Tübingen, Tübingen, Germany; Bayerisches Geoinstitut, University of Bayreuth, Bayreuth, Germany; Environmental Geochemistry, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
推荐引用方式 GB/T 7714	Peiffer S.,Kappler A.,Haderlein S.B.,等. A biogeochemical–hydrological framework for the role of redox-active compounds in aquatic systems[J],2021,14(5).
APA	Peiffer S..,Kappler A..,Haderlein S.B..,Schmidt C..,Byrne J.M..,...&Planer-Friedrich B..(2021).A biogeochemical–hydrological framework for the role of redox-active compounds in aquatic systems.Nature Geoscience,14(5).
MLA	Peiffer S.,et al."A biogeochemical–hydrological framework for the role of redox-active compounds in aquatic systems".Nature Geoscience 14.5(2021).