1Department of Environment, Hygiene and Animal Welfare, Wrocław University of Environmental and Life Sciences,
51-630 Wrocław, Poland
2Institute of Biology, Wrocław University of Environmental and Life Sciences,
51-630 Wrocław, Poland
Submission date: 2017-03-02
Final revision date: 2017-04-06
Acceptance date: 2017-05-28
Online publication date: 2018-01-10
Publication date: 2018-01-26
Pol. J. Environ. Stud. 2018;27(2):787–792