Authors

gaiac-Research Institute for Ecosystem Analysis and Assessment e.V., RWTH Aachen University, c/o Institute of Environmental Research - Biolology V, Wo, Aachen, Germany

Helmholtz-Zentrum für Umweltforschung GmbH, Leipzig, Germany

Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria

IBER, BAS, Sofia, Bulgaria

Finnish Environment Institute, Helsinki, Finland

University of forestry, Sofia, Bulgaria

University of Plovdiv, Bulgaria