[1] Agr & Agri Food Canada, Fredericton Res & Dev Ctr, 850 Lincoln Rd, Fredericton, NB E3B 4Z7, Canada
[2] Univ Leipzig, Inst Biol, Systemat Bot & Funct Biodivers, Johannisallee 21, D-04103 Leipzig, Germany
[3] German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5e, D-04103 Leipzig, Germany
[4] Univ Rey Juan Carlos, Area Biodiversidad & Conservac, C Tulipan S-N, E-28933 Mostoles, Spain
[5] Agr & Agri Food Canada, Charlottetown Res & Dev Ctr, 440 Univ Ave, Charlottetown, PE C1A 7Z5, Canada
[6] Helmholtz Ctr Environm Res, UFZ, Dept Physiol Divers, Permoserstr 15, D-04318 Leipzig, Germany
[7] Univ Leipzig, Inst Biol, Deutsch Pl 5e, D-04103 Leipzig, Germany
[8] Univ Zurich, Dept Geog, Winterthurerstr 190, CH-8057 Zurich, Switzerland