Funding for this research was provided by:
Estonian Ministry of Education and Research (IUT20-33)
Internal Grant Agency of the Faculty of Environmental Sciences, Czech University of Life Sciences Prague (42900/1312/3166)
Article History
Received: 28 June 2018
Accepted: 23 November 2018
First Online: 5 December 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.