Department of Biosciences and Landscape Architecture, University College Ghent, Voskenslaan 270, Ghent University, Coupure links 653, B-9000 Gent, Belgium. steven.maenhout@hogent.be|Department of Biosciences and Landscape Architecture, University College Ghent, Voskenslaan 270, Ghent University, Coupure links 653, B-9000 Gent, Belgium. steven.maenhout@hogent.be|Department of Biosciences and Landscape Architecture, University College Ghent, Voskenslaan 270, Ghent University, Coupure links 653, B-9000 Gent, Belgium. steven.maenhout@hogent.be