000864357 001__ 864357 000864357 005__ 20210130002529.0 000864357 0247_ $$2doi$$a10.1002/rcm.8374 000864357 0247_ $$2ISSN$$a0951-4198 000864357 0247_ $$2ISSN$$a1097-0231 000864357 0247_ $$2Handle$$a2128/22581 000864357 0247_ $$2altmetric$$aaltmetric:52862751 000864357 0247_ $$2pmid$$apmid:30561863 000864357 0247_ $$2WOS$$aWOS:000459797600007 000864357 037__ $$aFZJ-2019-04153 000864357 082__ $$a530 000864357 1001_ $$00000-0002-5785-7625$$aCastellano-Hinojosa, Antonio$$b0 000864357 245__ $$aImproved isotopic model based on 15 N tracing and Rayleigh-type isotope fractionation for simulating differential sources of N 2 O emissions in a clay grassland soil 000864357 260__ $$aNew York, NY$$bWiley Interscience$$c2019 000864357 3367_ $$2DRIVER$$aarticle 000864357 3367_ $$2DataCite$$aOutput Types/Journal article 000864357 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1565341772_28465 000864357 3367_ $$2BibTeX$$aARTICLE 000864357 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000864357 3367_ $$00$$2EndNote$$aJournal Article 000864357 520__ $$aRationaleIsotopic signatures of N2O can help distinguish between two sources (fertiliser N or endogenous soil N) of N2O emissions. The contribution of each source to N2O emissions after N‐application is difficult to determine. Here, isotopologue signatures of emitted N2O are used in an improved isotopic model based on Rayleigh‐type equations.MethodsThe effects of a partial (33% of surface area, treatment 1c) or total (100% of surface area, treatment 3c) dispersal of N and C on gaseous emissions from denitrification were measured in a laboratory incubation system (DENIS) allowing simultaneous measurements of NO, N2O, N2 and CO2 over a 12‐day incubation period. To determine the source of N2O emissions those results were combined with both the isotope ratio mass spectrometry analysis of the isotopocules of emitted N2O and those from the 15N‐tracing technique.ResultsThe spatial dispersal of N and C significantly affected the quantity, but not the timing, of gas fluxes. Cumulative emissions are larger for treatment 3c than treatment 1c. The 15N‐enrichment analysis shows that initially ~70% of the emitted N2O derived from the applied amendment followed by a constant decrease. The decrease in contribution of the fertiliser N‐pool after an initial increase is sooner and larger for treatment 1c. The Rayleigh‐type model applied to N2O isotopocules data (δ15Nbulk‐N2O values) shows poor agreement with the measurements for the original one‐pool model for treatment 1c; the two‐pool models gives better results when using a third‐order polynomial equation. In contrast, in treatment 3c little difference is observed between the two modelling approaches.ConclusionsThe importance of N2O emissions from different N‐pools in soil for the interpretation of N2O isotopocules data was demonstrated using a Rayleigh‐type model. Earlier statements concerning exponential increase in native soil nitrate pool activity highlighted in previous studies should be replaced with a polynomial increase with dependency on both N‐pool sizes. 000864357 536__ $$0G:(DE-HGF)POF3-255$$a255 - Terrestrial Systems: From Observation to Prediction (POF3-255)$$cPOF3-255$$fPOF III$$x0 000864357 588__ $$aDataset connected to CrossRef 000864357 7001_ $$00000-0001-5316-5552$$aLoick, Nadine$$b1$$eCorresponding author 000864357 7001_ $$0P:(DE-HGF)0$$aDixon, Elizabeth$$b2 000864357 7001_ $$0P:(DE-HGF)0$$aMatthews, G. Peter$$b3 000864357 7001_ $$0P:(DE-HGF)0$$aLewicka-Szczebak, Dominika$$b4 000864357 7001_ $$00000-0003-4746-4972$$aWell, Reinhard$$b5 000864357 7001_ $$0P:(DE-Juel1)145865$$aBol, Roland$$b6 000864357 7001_ $$0P:(DE-HGF)0$$aCharteris, Alice$$b7 000864357 7001_ $$0P:(DE-HGF)0$$aCardenas, Laura$$b8 000864357 773__ $$0PERI:(DE-600)2002158-6$$a10.1002/rcm.8374$$gVol. 33, no. 5, p. 449 - 460$$n5$$p449 - 460$$tRapid communications in mass spectrometry$$v33$$x0951-4198$$y2019 000864357 8564_ $$uhttps://juser.fz-juelich.de/record/864357/files/Castellano-Hinojosa_et_al-2019-Rapid_Communications_in_Mass_Spectrometry.pdf$$yOpenAccess 000864357 8564_ $$uhttps://juser.fz-juelich.de/record/864357/files/Castellano-Hinojosa_et_al-2019-Rapid_Communications_in_Mass_Spectrometry.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000864357 909CO $$ooai:juser.fz-juelich.de:864357$$pdnbdelivery$$pVDB$$pVDB:Earth_Environment$$pdriver$$popen_access$$popenaire 000864357 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)145865$$aForschungszentrum Jülich$$b6$$kFZJ 000864357 9131_ $$0G:(DE-HGF)POF3-255$$1G:(DE-HGF)POF3-250$$2G:(DE-HGF)POF3-200$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bErde und Umwelt$$lTerrestrische Umwelt$$vTerrestrial Systems: From Observation to Prediction$$x0 000864357 9141_ $$y2019 000864357 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000864357 915__ $$0StatID:(DE-HGF)1050$$2StatID$$aDBCoverage$$bBIOSIS Previews 000864357 915__ $$0LIC:(DE-HGF)CCBY4$$2HGFVOC$$aCreative Commons Attribution CC BY 4.0 000864357 915__ $$0StatID:(DE-HGF)0600$$2StatID$$aDBCoverage$$bEbsco Academic Search 000864357 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bRAPID COMMUN MASS SP : 2017 000864357 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000864357 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index 000864357 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000864357 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5 000864357 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000864357 915__ $$0StatID:(DE-HGF)0030$$2StatID$$aPeer Review$$bASC 000864357 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000864357 915__ $$0StatID:(DE-HGF)0310$$2StatID$$aDBCoverage$$bNCBI Molecular Biology Database 000864357 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000864357 915__ $$0StatID:(DE-HGF)0420$$2StatID$$aNationallizenz 000864357 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bClarivate Analytics Master Journal List 000864357 9201_ $$0I:(DE-Juel1)IBG-3-20101118$$kIBG-3$$lAgrosphäre$$x0 000864357 980__ $$ajournal 000864357 980__ $$aVDB 000864357 980__ $$aUNRESTRICTED 000864357 980__ $$aI:(DE-Juel1)IBG-3-20101118 000864357 9801_ $$aFullTexts