Global patterns of the isotopic composition of soil and plant nitrogen

Ronald Amundson, A. T. Austin, E. A.G. Schuur, K. Yoo, V. Matzek, C. Kendall, A. Uebersax, D. Brenner, W. T. Baisden

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Abstract

We compiled new and published data on the natural abundance N isotope composition (δ15N values) of soil and plant organic matter from around the world. Across a broad range of climate and ecosystem types, we found that soil and plant δ15N values systematically decreased with increasing mean annual precipitation (MAP) and decreasing mean annual temperature (MAT). Because most undisturbed soils are near N steady state, the observations suggest that an increasing fraction of ecosystem N losses are 15N-depleted forms (NO3, N2O, etc.) with decreasing MAP and increasing MAT. Wetter and colder ecosystems appear to be more efficient in conserving and recycling mineral N. Globally, plant δ15N values are more negative than soils, but the difference Nitrogen isotopes reflect time integrated measures of the controls on N storage that are critical for predictions of how these ecosystems will respond to human-mediated disturbances of the global N cycle.

Original languageEnglish (US)
Pages (from-to)31-1 - 31-10
JournalGlobal Biogeochemical Cycles
Volume17
Issue number1
DOIs
StatePublished - Mar 2003

Fingerprint

Ecosystems
isotopic composition
Nitrogen
Soils
nitrogen
Chemical analysis
ecosystem
Nitrogen Isotopes
soil
nitrogen isotope
Isotopes
Biological materials
Minerals
Recycling
recycling
temperature
isotope
disturbance
organic matter
Temperature

Keywords

  • Nitrogen isotopes
  • Plant nitrogen
  • Soil nitrogen

Cite this

Amundson, R., Austin, A. T., Schuur, E. A. G., Yoo, K., Matzek, V., Kendall, C., ... Baisden, W. T. (2003). Global patterns of the isotopic composition of soil and plant nitrogen. Global Biogeochemical Cycles, 17(1), 31-1 - 31-10. https://doi.org/10.1029/2002GB001903

Global patterns of the isotopic composition of soil and plant nitrogen. / Amundson, Ronald; Austin, A. T.; Schuur, E. A.G.; Yoo, K.; Matzek, V.; Kendall, C.; Uebersax, A.; Brenner, D.; Baisden, W. T.

In: Global Biogeochemical Cycles, Vol. 17, No. 1, 03.2003, p. 31-1 - 31-10.

Research output: Contribution to journalArticle

Amundson, R, Austin, AT, Schuur, EAG, Yoo, K, Matzek, V, Kendall, C, Uebersax, A, Brenner, D & Baisden, WT 2003, 'Global patterns of the isotopic composition of soil and plant nitrogen', Global Biogeochemical Cycles, vol. 17, no. 1, pp. 31-1 - 31-10. https://doi.org/10.1029/2002GB001903
Amundson R, Austin AT, Schuur EAG, Yoo K, Matzek V, Kendall C et al. Global patterns of the isotopic composition of soil and plant nitrogen. Global Biogeochemical Cycles. 2003 Mar;17(1):31-1 - 31-10. https://doi.org/10.1029/2002GB001903
Amundson, Ronald ; Austin, A. T. ; Schuur, E. A.G. ; Yoo, K. ; Matzek, V. ; Kendall, C. ; Uebersax, A. ; Brenner, D. ; Baisden, W. T. / Global patterns of the isotopic composition of soil and plant nitrogen. In: Global Biogeochemical Cycles. 2003 ; Vol. 17, No. 1. pp. 31-1 - 31-10.
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