1Department of Environmental Sciences, Faculty of Environmental Studies, Universiti Putra Malaysia,
43400 UPM Serdang, Malaysia
2Department of Biology, Faculty of Science, Universiti Putra Malaysia,
43400 UPM Serdang, Malaysia
Submission date: 2016-11-07
Final revision date: 2017-03-09
Acceptance date: 2017-03-12
Online publication date: 2017-12-12
Publication date: 2018-01-02
Pol. J. Environ. Stud. 2018;27(1):79–93