Federal Ministry of Agriculture, Food and Regional Identity
Thünen-Institute for Forest Ecosystems
Baden-Württemberg
Bavaria
Berlin and Brandenburg
Mecklenburg-Western Pomerania
Nordwestdeutsche Forstliche Versuchsanstalt (Hesse, Lower Saxony, Saxony-Anhalt, Schleswig-Holstein)
Northrhine-Westfalia
Rhineland-Palatinate
Saarland
Saxony
Thuringia