1. Land Use & Biosafety Unit, Umweltbundesamt–Environment Agency Austria (EAA), Spittelauer Laende 5, 1090 Vienna, Austria
2. Büro Lang, Hoernlehof, Gresgen 108, 79669 Zell im Wiesental, Germany
3. Research Group Environmental Geosciences, Department of Environmental Sciences, University of Basel, Bernoullistr. 30, 4056 Basel, Switzerland
4. Division of Terrestrial Monitoring, Federal Agency for Nature Conservation (BfN), Konstantinstr. 110, 53179 Bonn, Germany