| Marcus Schaub | Swiss Federal Research Institute WSL, Switzerland |
| Lars Vesterdal | University of Copenhagen, Denmark |
| Bruno De Vos | Research Institute for Nature and Forest INBO, Belgium |
| Liisa Ukonmaanaho | Natural Resources Institute Finland LUKE, Finland |
| Stefan Fleck | Northwest German Forest Research Station, Germany |
| Kai Schwärzel | Thünen Institute of Forest Ecosystems, Germany |
| Marco Ferretti | Swiss Federal Research Institute WSL, Switzerland |