Funding for this research was provided by:
Fakultu Agrobiologie, Potravinových a Prírodních Zdrojů, Česká Zemědělská Univerzita v Praze (MSM 6046070901)
Česká Zemědělská Univerzita v Praze (20172002, 20152004)
Narodowe Centrum Nauki (UMO-2019/33/B/NZ9/00590, UMO-2019/33/N/NZ8/02848)
Received: 14 August 2020
Accepted: 19 November 2020
First Online: 14 December 2020
Ethics approval and consent to participate
: Experiments comply with current laws of the Czech Republic where they were performed. The fieldwork was conducted with the proper permission based on the conditions of granted exemptions (Administration of PLA Labské pískovce) No. J. 00297/LP/2008 of 31 March 2008 and No. 10131/LP/2012/AOPK of 13 August 2013.
: Not applicable.
: The authors declare that they have no competing interests.