{"refrec":{"BRefID":8436,"RR":"<b>Middelburg, J.J.; Soetaert, K.; Herman, P.M.J.</b> (1996). Evaluation of the nitrogen isotope-pairing method for measuring benthic denitrification: A simulation analysis. <i>Limnol. Oceanogr. 41(8)</i>: 1839-1844","BEntID":8436,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Limnol. Oceanogr. 41(8)</i>: 1839-1844","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Middelburg, J.J.; Soetaert, K.; Herman, P.M.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Middelburg, J.J. <i>et al.</i>","Englishabstract":"The nitrogen isotope-pairing method to measure sedimentary denitrification is evaluated by means of a general diagenetic model that describes the depth distribution of 0<sub>2</sub>, NH<sub>4</sub><sup>+</sup>, <sup>14</sup>NO<sub>3</sub><sup>-</sup>, and <sup>15</sup>NO<sub>3</sub><sup>-</sup>, among others. The model simulations demonstrate that isotope fractionation effects during denitrification can be neglected, but that nonuniform mixing of added <sup>15</sup>NO<sub>3</sub><sup>-</sup> with locally produced <sup>14</sup>NO<sub>3</sub><sup>-</sup> causes underestimation of <i>in situ</i> rates of denitrification. Enrichment of bottom water with sup>15</sup>NO<sub>3</sub><sup>-</sup> concentrations above ambient levels not only results in enhanced rates of denitrification, but may also change <i>in situ</i> rates of coupled nitrification-denitrification. However, the resulting rates usually deviate <10% from <i>in situ</i> values, and the nitrogen isotope-pairing method therefore remains a powerful technique to determine rates of denitrification in sediments. We argue that one should not partition denitrification into bottom-water-supported and nitrification-coupled components. This partitioning causes confusion, is not required to understand sedimentary nitrogen cycling, and does not reflect a physically realizable situation.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Evaluation of the nitrogen isotope-pairing method for measuring benthic denitrification: A simulation analysis","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1996,"MonPub":null,"DateUpdate":"2019-07-12","DateCreate":"2001-05-08","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1996WR06100023","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":8436,"PubliDate":1996,"Pagination":"1839-1844","XtraPublOfAnaID":null,"ISBN":null,"Volume":"41","Issue":"8","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43511,"SerRR":"Limnology and Oceanography. 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