1. Agency for Environment, Nature Conservation and Geology Mecklenburg-Vorpommern, Goldberger Str. 12, D-18273 Güstrow, Germany
2. Lewitzweg 23, 19372 Matzlow-Garwitz
3. Aarhus University, Department of Bioscience, Kalø, Grenåvej 14, DK-8410 Rønde, Denmark