This volume quantifies carbon storage in managed forest ecosystems not only in biomass, but also in all soil compartments. It investigates the interactions between the carbon and nitrogen cycles by working along a north-south transect through Europe which starts in northern Sweden, passes through a N-deposition maximum in central Europe and ends in Italy. Surprisingly, C storage in soils increase with N deposition; in addition, not only reforestations, but old growth forests have the highest rate of carbon sequestration. For the first time biogeochemical processes are linked to biodiversity on a large geographic scale and with special focus on soil organisms. The included CD-ROM provides a complete database of all flux, storage and species observations for modelers.