Funding for this research was provided by:
Deutsche Bundesstiftung Umwelt
Text and Data Mining valid from 2019-01-04
Received: 28 August 2018
Accepted: 14 December 2018
First Online: 4 January 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: No dragon- and damselflies were harmed during the course of the study.