Climatic controls on leaf litter decomposition across European forests and grasslands revealed by reciprocal litter transplantation experiments

Miguel Portillo-Estrada, Mari Pihlatie, Janne F.J. Korhonen, Janne Levula, Arnoud K.F. Frumau, Andreas Ibrom, Jonas J. Lembrechts, Lourdes Morillas, László Horváth, Stephanie K. Jones, Ülo Niinemets

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Carbon (C) and nitrogen (N) cycling under future climate change is associated with large uncertainties in litter decomposition and the turnover of soil C and N. In addition, future conditions (especially altered precipitation regimes and warming) are expected to result in changes in vegetation composition, and accordingly in litter species and chemical composition, but it is unclear how such changes could potentially alter litter decomposition. Litter transplantation experiments were carried out across six European sites (four forests and two grasslands) spanning a large geographical and climatic gradient (5.6-11.4 °C in annual temperature 511-878 mm in precipitation) to gain insight into the climatic controls on litter decomposition as well as the effect of litter origin and species. The decomposition k rates were overall higher in warmer and wetter sites than in colder and drier sites, and positively correlated with the litter total specific leaf area. Also, litter N content increased as less litter mass remained and decay went further. Surprisingly, this study demonstrates that climatic controls on litter decomposition are quantitatively more important than species or site of origin. Cumulative climatic variables, precipitation, soil water content and air temperature (ignoring days with air temperatures below zero degrees Celsius), were appropriate to predict the litter remaining mass during decomposition (Mr). Mr and cumulative air temperature were found to be the best predictors for litter carbon and nitrogen remaining during the decomposition. Using mean annual air temperature, precipitation, soil water content and litter total specific leaf area as parameters we were able to predict the annual decomposition rate (k) accurately.

Original languageEnglish
Pages (from-to)1621-1633
Number of pages13
JournalBiogeosciences
Volume13
Issue number5
DOIs
Publication statusPublished - Mar 16 2016

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Earth-Surface Processes

Fingerprint Dive into the research topics of 'Climatic controls on leaf litter decomposition across European forests and grasslands revealed by reciprocal litter transplantation experiments'. Together they form a unique fingerprint.

  • Cite this

    Portillo-Estrada, M., Pihlatie, M., Korhonen, J. F. J., Levula, J., Frumau, A. K. F., Ibrom, A., Lembrechts, J. J., Morillas, L., Horváth, L., Jones, S. K., & Niinemets, Ü. (2016). Climatic controls on leaf litter decomposition across European forests and grasslands revealed by reciprocal litter transplantation experiments. Biogeosciences, 13(5), 1621-1633. https://doi.org/10.5194/bg-13-1621-2016