气候变化领域集成服务门户(CCPortal): Towards an improved understanding of biogeochemical processes across surface-groundwater interactions in intermittent rivers and ephemeral streams

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DOI	10.1016/j.earscirev.2021.103724
	Towards an improved understanding of biogeochemical processes across surface-groundwater interactions in intermittent rivers and ephemeral streams
	Gómez-Gener L.; Siebers A.R.; Arce M.I.; Arnon S.; Bernal S.; Bolpagni R.; Datry T.; Gionchetta G.; Grossart H.-P.; Mendoza-Lera C.; Pohl V.; Risse-Buhl U.; Shumilova O.; Tzoraki O.; von Schiller D.; Weigand A.; Weigelhofer G.; Zak D.; Zoppini A.
发表日期	2021
ISSN	0012-8306
卷号	220
英文摘要	Surface-groundwater interactions in intermittent rivers and ephemeral streams (IRES), waterways which do not flow year-round, are spatially and temporally dynamic because of alternations between flowing, non-flowing and dry hydrological states. Interactions between surface and groundwater often create mixing zones with distinct redox gradients, potentially driving high rates of carbon and nutrient cycling. Yet a complete understanding of how underlying biogeochemical processes across surface-groundwater flowpaths in IRES differ among various hydrological states remains elusive. Here, we present a conceptual framework relating spatial and temporal hydrological variability in surface water-groundwater interactions to biogeochemical processing hotspots in IRES. We combine a review of theIRES biogeochemistry literature with concepts of IRES hydrogeomorphology to: (i) outline common distinctions among hydrological states in IRES; (ii) use these distinctions, together with considerations of carbon, nitrogen, and phosphorus cycles within IRES, to predict the relative potential for biogeochemical processing across different reach-scale processing zones (flowing water, fragmented pools, hyporheic zones, groundwater, and emerged sediments); and (iii) explore the potential spatial and temporal variability of carbon and nutrient biogeochemical processing across entire IRES networks. Our approach estimates the greatest reach-scale potential for biogeochemical processing when IRES reaches are fragmented into isolated surface water pools, and highlights the potential of relatively understudied processing zones, such as emerged sediments. Furthermore, biogeochemical processing in fluvial networks dominated by IRES is likely more temporally than spatially variable. We conclude that biogeochemical research in IRES would benefit from focusing on interactions between different nutrient cycles, surface-groundwater interactions in non-flowing states, and consideration of fluvial network architecture. Our conceptual framework outlines opportunities to advance studies and expand understanding of biogeochemistry in IRES. © 2021 The Authors
英文关键词	Carbon; Ecosystem ecology; Intermittency; Nitrogen; Non-perennial; Phosphorus; Stream network; Watercourses
语种	英语
scopus关键词	biogeochemistry; carbon cycle; ephemeral stream; groundwater-surface water interaction; nitrogen cycle; nutrient cycling; phosphorus cycle; water chemistry
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/209235
作者单位	Stream Biofilm and Ecosystem Research Laboratory, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Department of Aquatic Ecology, Eawag, Swiss Federal Institute of Aquatic Sciences, Dübendorf, Switzerland; Centre for Freshwater Ecosystems, La Trobe University, Wodonga, VIC, Australia; Department of Ecology and Hydrology, International Excellence Campus for Higher Education and Research of the University of Murcia, Murcia, Spain; Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion, Israel; Integrative Freshwater Ecology Group (IFE), Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Blanes, Girona, Spain; Department of Chemistry, Life Sciences and Environmental Sustainability, Parma University, Parma, Italy; INRAE, UR-RiverLy, Centre de Lyon-Villeurbanne, Villeurbanne Cedex, France; Catalan Institute for Water Research (ICRA), Scientifi...
推荐引用方式 GB/T 7714	Gómez-Gener L.,Siebers A.R.,Arce M.I.,et al. Towards an improved understanding of biogeochemical processes across surface-groundwater interactions in intermittent rivers and ephemeral streams[J],2021,220.
APA	Gómez-Gener L..,Siebers A.R..,Arce M.I..,Arnon S..,Bernal S..,...&Zoppini A..(2021).Towards an improved understanding of biogeochemical processes across surface-groundwater interactions in intermittent rivers and ephemeral streams.EARTH-SCIENCE REVIEWS,220.
MLA	Gómez-Gener L.,et al."Towards an improved understanding of biogeochemical processes across surface-groundwater interactions in intermittent rivers and ephemeral streams".EARTH-SCIENCE REVIEWS 220(2021).