1. Department of Chemistry and Bioscience, Aalborg University, Aalborg Zoo, Mølleparkvej 63, 9000 Aalborg, Denmark
2. Istituto Superiore per la Protezione e la Ricerca Ambientale ISPRA, Roma, Italy
3. Department of Zoology and Animal Cell Biology, University of the Basque Country, UPV/EHU, Vitoria-Gasteiz, Spain
4. Nature Conservation and Plant Ecology Group, Wageningen University, Wageningen, Netherlands
5. Experimentele Planten Ecologie, IWWR, Radboud Universiteit, Nijmegen, Netherlands