Affiliation: | Department of Terrestrial Ecology, National Environmental Research Institute, Vejlsøvej 25, DK-8600 Silkeborg, Denmark,;Department of Ecology, Royal Veterinary and Agricultural University, Rolighedsvej 21, DK-1958 Frederiksberg, Denmark, and;Botanical Garden, The University of Tokyo, 1842 Hanaishi-cho, Nikko, 321–1435 Japan |