Plant and Soil

, Volume 363, Issue 1–2, pp 215–229 | Cite as

The effects of snowpack properties and plant strategies on litter decomposition during winter in subalpine meadows

  • Patrick Saccone
  • Samuel Morin
  • Florence Baptist
  • Jean-Marc Bonneville
  • Marie-Pascale Colace
  • Florent Domine
  • Mathieu Faure
  • Roberto Geremia
  • Jonathan Lochet
  • Franck Poly
  • Sandra Lavorel
  • Jean-Christophe Clément
Regular Article

Abstract

Aims

Climate-induced changes in snow cover are likely to affect cold arctic and alpine ecosystems functioning and major processes such as wintertime plant litter decomposition. However, it remains poorly studied in subalpine systems where the snowpack may be irregular. In this paper we explored the dynamic of the winter plant litter decomposition process, its magnitude and its relationship with the snowpack properties.

Methods

In subalpine grasslands of the Central French Alps, we performed a litter bag experiment monitoring over a whole winter the litter decomposition from the exploitative Dactylis glomerata and the conservative Festuca paniculata, under two contiguous experimental sites with snowpacks differing in depth and physical properties.

Results

Litter decomposition rates were stable during winter and 3-fold higher under deeper and permanent snowpack with higher thermal resistance. Litter quality appeared only significant under thinner snowpack with higher decomposition rates for the exploitative species. A snowpack with higher thermal resistance created an insulating layer promoting the decomposition process.

Conclusion

These results suggest that the temporal (permanence vs. intermittency) and physical (depth and thermal resistance) characteristics of the snowpack should be considered when studying the response of winter ecosystems functioning to global changes.

Keywords

Plant litter decomposition Snow depth Snowpack permanence Thermal resistance Subalpine meadows 

Supplementary material

11104_2012_1307_MOESM1_ESM.pdf (63 kb)
Esm 1(PDF 62 kb)

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Patrick Saccone
    • 1
  • Samuel Morin
    • 2
  • Florence Baptist
    • 1
  • Jean-Marc Bonneville
    • 1
  • Marie-Pascale Colace
    • 1
  • Florent Domine
    • 3
    • 4
  • Mathieu Faure
    • 1
  • Roberto Geremia
    • 1
  • Jonathan Lochet
    • 1
  • Franck Poly
    • 5
  • Sandra Lavorel
    • 1
  • Jean-Christophe Clément
    • 1
  1. 1.Laboratoire d’Ecologie Alpine CNRS UMR 5553 Université de GrenobleGrenoble Cedex 09France
  2. 2.Météo-France—CNRSGrenobleFrance
  3. 3.CNRS—Université Joseph Fourier Grenoble 1, Laboratoire de Glaciologie et Geophysique de l’EnvironnementGrenobleFrance
  4. 4.Takuvik International LaboratoryCNRS/Université LavalQuébecCanada
  5. 5.Laboratoire d’Ecologie MicrobienneUniversité Lyon 1LyonFrance

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