... tostudy the temporal changes in CO2 efflux in response to soilwater availability and temperature. Several data are available on the respiration of Mediterra-nean ecosystems. Most of them were ... respiration of 5.7% and an increase of ecosystem respiration of 8.6%. For nonlimiting soil water conditions, at RWC = 1, the increases of respiration caused by a 1 °C temperature increase are of ... INTRODUCTION The efflux of CO2 from the soil, also referred to as soil res-piration, is a major component of the global carbon balance[33, 44]. Its importance is equal or greater than the estimatedterrestrial...