1. MTA-DE Lendület Seed Ecology Research Group , Egyetem sqr. 1, H-4032 , Debrecen , Hungary .
2. Association Centro Studi de Romita , Via G. Postiglione 9, c/o Filippo D’Erasmo, 70126 Bari , Italy .
3. Institute of Biodiversity and Ecosystem Research , Bulgarian Academy of Sciences , Sofia , 1113 , Bulgaria .
4. Department of Environmental Biology , Sapienza University of Rome , Piazzale Aldo Moro 5, 00185 Rome , Italy .
5. Graduate School of Human Development and Environment , Kobe University , Tsurukabuto, Nada-ku 3-11, Kobe City , Hyogo, 657-8501 , Japan .
6. Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences , University of Helsinki , P.O. Box 65 (Viikinkaari 2a), 00014 , Finland .
7. Department of Architecture , Aalto University , P. O. Box 16500 (Miestentie 3), 00076 Aalto , Finland