Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (INST 162/490-1 FUGG)
Deutsche Bundesstiftung Umwelt (31812-01)
Article History
Received: 9 May 2018
Revised: 4 July 2018
Accepted: 5 July 2018
First Online: 21 July 2018
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: This article does not contain any studies with human participants or animals performed by any of the authors.