Leaf waxes in litter and topsoils along a European transect

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Imke K. Schäfer - , University of Bern (Author)
  • Verena Lanny - , ETH Zurich (Author)
  • Jörg Franke - , University of Bern (Author)
  • Timothy I. Eglinton - , ETH Zurich (Author)
  • Michael Zech - , Chair of Computational Landscape Ecology, Landscape- and Geoecology, TUD Dresden University of Technology, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg (Author)
  • Barbora Vysloužilová - , Czech Academy of Sciences, University of Strasbourg (Author)
  • Roland Zech - , University of Bern (Author)

Abstract

Lipid biomarkers are increasingly used to reconstruct past environmental and climate conditions. Leaf-wax-derived long-chain n-alkanes and n-alkanoic acids may have great potential for reconstructing past changes in vegetation, but the factors that affect the leaf wax distribution in fresh plant material, as well as in soils and sediments, are not yet fully understood and need further research. We systematically investigated the influence of vegetation and soil depth on leaf waxes in litter and topsoils along a European transect. The deciduous forest sites are often dominated by the n-C27 alkane and n-C28 alkanoic acid. Conifers produce few n-alkanes but show high abundances of the C24 n-alkanoic acid. Grasslands are characterized by relatively high amounts of C31 and C33 n-alkanes and C32 and C34 n-alkanoic acids. Chain length ratios thus may allow for distinguishing between different vegetation types, but caution must be exercised given the large species-specific variability in chain length patterns. An updated endmember model with the new n-alkane ratio (n-C31 + n-C33)/(n-C27 + n-C31 + n-C33) is provided to illustrate, and tentatively account for, degradation effects on nalkanes.

Details

Original languageEnglish
Pages (from-to)551-564
Number of pages14
JournalSoil
Volume2
Issue number4
Publication statusPublished - 2016
Peer-reviewedYes

Keywords

ASJC Scopus subject areas