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Convergence of soil nitrogen isotopes across global climate gradients

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dc.citation.doi10.1038/srep08280
dc.citation.issn2045-2322
dc.citation.jtitleScientific Reports
dc.citation.spage8
dc.citation.volume5
dc.contributor.authorCraine, J. M.
dc.contributor.authorElmore, A. J.
dc.contributor.authorWang, L. X.
dc.contributor.authorAugusto, L.
dc.contributor.authorBaisden, W. T.
dc.contributor.authorBrookshire, E. N. J.
dc.contributor.authorCramer, M. D.
dc.contributor.authorHasselquist, N. J.
dc.contributor.authorHobbie, E. A.
dc.contributor.authorKahmen, A.
dc.contributor.authorKoba, K.
dc.contributor.authorKranabetter, J. M.
dc.contributor.authorMack, M. C.
dc.contributor.authorMarin-Spiotta, E.
dc.contributor.authorMayor, J. R.
dc.contributor.authorMcLauchlan, Kendra K.
dc.contributor.authoreidmclauch
dc.date.accessioned2016-04-04T22:46:14Z
dc.date.available2016-04-04T22:46:14Z
dc.date.issued2015-02-06
dc.date.issued2014-11-01
dc.date.published2015
dc.descriptionCitation: Craine, J. M., Elmore, A. J., Wang, L. X., Augusto, L., Baisden, W. T., Brookshire, E. N. J., . . . Zeller, B. (2015). Convergence of soil nitrogen isotopes across global climate gradients. Scientific Reports, 5, 8. doi:10.1038/srep08280
dc.descriptionQuantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems, and climate forcing. With limited direct measures of soil N cycling at the global scale, syntheses of the N-15 : N-14 ratio of soil organic matter across climate gradients provide key insights into understanding global patterns of N cycling. In synthesizing data from over 6000 soil samples, we show strong global relationships among soil N isotopes, mean annual temperature (MAT), mean annual precipitation (MAP), and the concentrations of organic carbon and clay in soil. In both hot ecosystems and dry ecosystems, soil organic matter was more enriched in N-15 than in corresponding cold ecosystems or wet ecosystems. Below a MAT of 9.8 degrees C, soil delta N-15 was invariant with MAT. At the global scale, soil organic C concentrations also declined with increasing MAT and decreasing MAP. After standardizing for variation among mineral soils in soil C and clay concentrations, soil delta N-15 showed no consistent trends across global climate and latitudinal gradients. Our analyses could place new constraints on interpretations of patterns of ecosystem N cycling and global budgets of gaseous N loss.
dc.descriptionAdditional Authors: Michelsen, A.;Nardoto, G. B.;Oliveira, R. S.;Perakis, S. S.;Peri, P. L.;Quesada, C. A.;Richter, A.;Schipper, L. A.;Stevenson, B. A.;Tumer, B. L.;Viani, R. A. G.;Wanek, W.;Zeller, B.
dc.identifier.urihttp://hdl.handle.net/2097/32310
dc.relation.urihttps://doi.org/10.1038/srep08280
dc.rightsAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectN-15 Natural-Abundance
dc.subjectOrganic-Matter
dc.subjectLitter Decomposition
dc.subjectInorganic
dc.subjectNitrogen
dc.subjectTropical Forests
dc.titleConvergence of soil nitrogen isotopes across global climate gradients
dc.typeArticle

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