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- W1971886245 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 236:31-35 (2002) - doi:10.3354/meps236031 Evidence for suboxic nitrification in recent marine sediments Robert J. G. Mortimer1,*, Michael D. Krom1, Sansha J. Harris1, Peter J. Hayes2, Ian M. Davies2 , William Davison3, Hao Zhang3 1School of Earth Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom 2Fisheries Research Services, Marine Laboratory, PO Box 101, Victoria Road, Aberdeen AB11 9DB, United Kingdom 3Environmental Science Department, Institute of Environmental and Natural Sciences (IENS), Lancaster University, Lancaster LA1 4YQ, United Kingdom *E-mail: r.mortimer@earth.leeds.ac.uk ABSTRACT: The classical scheme of biogeochemical zones (BGZ) is known to be an oversimplification of the microbial processes that occur in organic-rich marine sediments. Results from a coupled deployment of pore-water gel probes in Loch Duich, Scotland, provide direct evidence for rapid recycling within the iron reduction (FeR) and sulphate reduction (SR) zones. High resolution pore-water profiles obtained using diffusive equilibrium in thin films (DET) gel probes found a nitrate peak at the boundary between the FeR and SR zones. This non-steady state feature is consistent with recycling of reduced N occurring throughout the FeR zone. Both conventional pore-water iron profiles and results from diffusive gradient in thin films (DGT) probes indicate that iron is solubilised and precipitated in rapid Fe/S recycling reactions throughout the SR zone. The presence of such complex recycling reactions confirms the oversimplification of the classical BGZ scheme. KEY WORDS: Biogeochemical recycling · Suboxic nitrification · DET · DGT Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 236. Online publication date: July 03, 2002 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2002 Inter-Research." @default.
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- W1971886245 title "Evidence for suboxic nitrification in recent marine sediments" @default.
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