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dc.contributor.authorStueeken, Eva E.
dc.contributor.authorKipp, Michael A.
dc.contributor.authorKoehler, Matthew C.
dc.contributor.authorBuick, Roger
dc.identifier.citationStueeken , E E , Kipp , M A , Koehler , M C & Buick , R 2016 , ' The evolution of Earth’s biogeochemical nitrogen cycle ' , Earth Science Reviews , vol. 160 , pp. 220-239 .
dc.identifier.otherPURE: 244544481
dc.identifier.otherPURE UUID: c5bf3245-0e28-4f30-ad16-08b1ca3aceae
dc.identifier.otherRIS: urn:CAEA70007423477812339BFB9FC973CF
dc.identifier.otherScopus: 84979609069
dc.identifier.otherWOS: 000383295900009
dc.identifier.otherORCID: /0000-0001-6861-2490/work/65014394
dc.descriptionFinancial support during the compilation of this manuscript was provided by the NASA postdoctoral program (EES), the NSF Graduate Research Fellowship Program (MAK), the Agouron Institute (MCK, RB) and the NSF FESD program (grant number 1338810, subcontract to RB).en
dc.description.abstractNitrogen is an essential nutrient for all life on Earth and it acts as a major control on biological productivity in the modern ocean. Accurate reconstructions of the evolution of life over the course of the last four billion years therefore demand a better understanding of nitrogen bioavailability and speciation through time. The biogeochemical nitrogen cycle has evidently been closely tied to the redox state of the ocean and atmosphere. Multiple lines of evidence indicate that the Earth’s surface has passed in a non-linear fashion from an anoxic state in the Hadean to an oxic state in the later Phanerozoic. It is therefore likely that the nitrogen cycle has changed markedly over time, with potentially severe implications for the productivity and evolution of the biosphere. Here we compile nitrogen isotope data from the literature and review our current understanding of the evolution of the nitrogen cycle, with particular emphasis on the Precambrian. Combined with recent work on redox conditions, trace metal availability, sulfur and iron cycling on the early Earth, we then use the nitrogen isotope record as a platform to test existing and new hypotheses about biogeochemical pathways that may have controlled nitrogen availability through time. Among other things, we conclude that (a) abiotic nitrogen sources were likely insufficient to sustain a large biosphere, thus favoring an early origin of biological N2 fixation, (b) evidence of nitrate in the Neoarchean and Paleoproterozoic confirm current views of increasing surface oxygen levels at those times, (c) abundant ferrous iron and sulfide in the mid-Precambrian ocean may have affected the speciation and size of the fixed nitrogen reservoir, and (d) nitrate availability alone was not a major driver of eukaryotic evolution.
dc.relation.ispartofEarth Science Reviewsen
dc.rights© 2016 Elsevier B.V. All rights reserved. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectNitrogen cycleen
dc.subjectNitrogen isotopesen
dc.subjectG Geography (General)en
dc.subjectGE Environmental Sciencesen
dc.titleThe evolution of Earth’s biogeochemical nitrogen cycleen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Geography and Geosciencesen
dc.contributor.institutionUniversity of St Andrews.Earth and Environmental Sciencesen
dc.description.statusPeer revieweden

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