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Plant and Soil

, Volume 356, Issue 1–2, pp 395–403 | Cite as

Community traitscape of foliar nitrogen isotopes reveals N availability patterns in a tallgrass prairie

  • Joseph M. CraineEmail author
  • E. Gene Towne
  • Troy W. Ocheltree
  • Jesse B. Nippert
Regular Article

Abstract

Background and aims

Nutrients are important determinants of community assembly, yet the roles they play in structuring plant communities are still poorly understood. One inferential approach to understanding how environmental factors structure plant communities is examining the distribution of key functional traits among species of a community—a community traitscape.

Methods

To better understand how nitrogen (N) and water availability structure grasslands, we measured N concentrations and isotope ratios for 366 herbaceous species in a mesic N-limited temperate grassland, Konza Prairie. We also compared foliar N concentrations and N isotopes between Konza species and a global dataset.

Results

Species that had either high foliar N concentrations or high δ15NL were not necessarily more or less abundant on the landscape nor more or less likely to be found in uplands, grazed areas, or burned areas. Apparently there are unique hot spots of high N availability at Konza and the typical non-Fabaceae Konza species occupies sites with greater N availability than found globally.

Conclusions

Although nascent, the Konza traitscapes suggest that plant diversity in nutrient-limited communities might be strongly dependent on high-nutrient availability sites that enable high-fertility species to persist in a matrix of low nutrient availability.

Keywords

Konza Prairie Grasslands Isotopes Community assembly Resource limitation Disturbance 

Abbreviations

MAT

Mean annual precipitation

[NL]

Foliar nitrogen concentrations

Notes

Acknowledgements

JMC was supported by NSF grant DEB-0816629. The Konza Prairie LTER dataset analyzed is the plant cover dataset (PVC02). Data collection and archival was supported by National Science Foundation grants to the Konza Prairie LTER program. We thank John Blair, Kendra McLauchlan, Ian Wright, and two anonymous reviewers for comments and Ian for coining the word “traitscape”.

Supplementary material

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11104_2012_1141_MOESM2_ESM.docx (73 kb)
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11104_2012_1141_MOESM3_ESM.docx (3.7 mb)
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11104_2012_1141_MOESM4_ESM.docx (202 kb)
Online Resource 4 (DOCX 201 kb)

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Joseph M. Craine
    • 1
    Email author
  • E. Gene Towne
    • 1
  • Troy W. Ocheltree
    • 1
  • Jesse B. Nippert
    • 1
  1. 1.Division of BiologyKansas State UniversityManhattanUSA

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