Ecosystems

, Volume 11, Issue 8, pp 1352–1367

Soil Respiration in European Grasslands in Relation to Climate and Assimilate Supply

  • Michael Bahn
  • Mirco Rodeghiero
  • Margaret Anderson-Dunn
  • Sabina Dore
  • Cristina Gimeno
  • Matthias Drösler
  • Michael Williams
  • Christof Ammann
  • Frank Berninger
  • Chris Flechard
  • Stephanie Jones
  • Manuela Balzarolo
  • Suresh Kumar
  • Christian Newesely
  • Tibor Priwitzer
  • Antonio Raschi
  • Rolf Siegwolf
  • Sanna Susiluoto
  • John Tenhunen
  • Georg Wohlfahrt
  • Alexander Cernusca
Article

DOI: 10.1007/s10021-008-9198-0

Cite this article as:
Bahn, M., Rodeghiero, M., Anderson-Dunn, M. et al. Ecosystems (2008) 11: 1352. doi:10.1007/s10021-008-9198-0

Abstract

Soil respiration constitutes the second largest flux of carbon (C) between terrestrial ecosystems and the atmosphere. This study provides a synthesis of soil respiration (Rs) in 20 European grasslands across a climatic transect, including ten meadows, eight pastures and two unmanaged grasslands. Maximum rates of Rs ( \( R_{{{\text{s}}_{{{\text{max}}}} }} \)), Rs at a reference soil temperature (10°C; \( R_{{{\text{s}}_{{{\text{10}}}} }} \)) and annual Rs (estimated for 13 sites) ranged from 1.9 to 15.9 μmol CO2 m−2 s−1, 0.3 to 5.5 μmol CO2 m−2 s−1 and 58 to 1988 g C m−2 y−1, respectively. Values obtained for Central European mountain meadows are amongst the highest so far reported for any type of ecosystem. Across all sites \( R_{{{\text{s}}_{{{\text{max}}}} }} \) was closely related to \( R_{{{\text{s}}_{{{\text{10}}}} }} \). Assimilate supply affected Rs at timescales from daily (but not necessarily diurnal) to annual. Reductions of assimilate supply by removal of aboveground biomass through grazing and cutting resulted in a rapid and a significant decrease of Rs. Temperature-independent seasonal fluctuations of Rs of an intensively managed pasture were closely related to changes in leaf area index (LAI). Across sites \( R_{{{\text{s}}_{{{\text{10}}}} }} \) increased with mean annual soil temperature (MAT), LAI and gross primary productivity (GPP), indicating that assimilate supply overrides potential acclimation to prevailing temperatures. Also annual Rs was closely related to LAI and GPP. Because the latter two parameters were coupled to MAT, temperature was a suitable surrogate for deriving estimates of annual Rs across the grasslands studied. These findings contribute to our understanding of regional patterns of soil C fluxes and highlight the importance of assimilate supply for soil CO2 emissions at various timescales.

Keywords

soil CO2 effluxtemperaturemoisturegross primary productivityleaf area indexsoil carbonland use

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Michael Bahn
    • 1
  • Mirco Rodeghiero
    • 2
  • Margaret Anderson-Dunn
    • 3
  • Sabina Dore
    • 4
  • Cristina Gimeno
    • 5
  • Matthias Drösler
    • 6
  • Michael Williams
    • 7
  • Christof Ammann
    • 8
  • Frank Berninger
    • 9
  • Chris Flechard
    • 8
  • Stephanie Jones
    • 3
  • Manuela Balzarolo
    • 4
  • Suresh Kumar
    • 7
  • Christian Newesely
    • 1
  • Tibor Priwitzer
    • 10
  • Antonio Raschi
    • 11
  • Rolf Siegwolf
    • 12
  • Sanna Susiluoto
    • 10
  • John Tenhunen
    • 6
  • Georg Wohlfahrt
    • 1
  • Alexander Cernusca
    • 1
  1. 1.Institute of EcologyUniversity of InnsbruckInnsbruckAustria
  2. 2.Centro di Ecologia Alpina-Fondazione Edmund MachTrentoItaly
  3. 3.Centre for Ecology and Hydrology EdinburghPenicuik, MidlothianUnited Kingdom
  4. 4.Department of Forest Science and EnvironmentUniversity of TusciaViterboItaly
  5. 5.Fundación Centro de Estudios Ambientales del MediterráneoPaternaSpain
  6. 6.Department of Plant EcologyUniversity of BayreuthBayreuthGermany
  7. 7.Department of Botany, School of Natural ScienceTrinity College, University of DublinDublin 2Ireland
  8. 8.Federal Research Station for Agroecology and AgricultureZürichSwitzerland
  9. 9.Department of Forest EcologyUniversity of HelsinkiHelsinkiFinland
  10. 10.National Forest Centre-Forest Research InstituteZvolenSlovakia
  11. 11.Consiglio Nazionale delle RicercheFirenzeItaly
  12. 12.Paul-Scherrer-InstituteVilligen PSISwitzerland