tClimate change has serious impacts on ecosystems, e.g. species diversity and abundance. It is well knownthat changes in temperature may have a pronounced influence on the reproductive output, growth andsurvival of various terrestrial species. However, much less is known on to how changes in temperature combined with exposure to pollution will influence biodiversity, the interaction between species, and the resulting change in species composition. In order to understand the effects of changes in temperature andcopper pollution (individually and in combination) on soil communities and processes, a factorial mul-tispecies experiment was performed