Funding for this research was provided by:
Narodowym Centrum Nauki (DEC-2016/21/D/NZ9/01333)
Text and Data Mining valid from 2019-10-29
Received: 9 August 2019
Accepted: 26 September 2019
First Online: 29 October 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The authors confirm obtaining the permission to conduct the study in Czarna Rózga Reserve. The permission was issued by Regional Directorate for Environmental Protection in Łódź (Poland) (WPN-I.6205.78.2016.DB).