1. Environmental Technologies, Alberta Research Council, Vegreville, Alberta, T9C 1T4, Canada
2. BIOtecEMOL, CCBG, University of Madeira, Campus da Penteada, 9000–390 Funchal, Portugal
3. Botanical Institute, University of Coimbra, Arcos do Jardim, 3000 Coimbra, Portugal
4. CEPTA, Instituto de Investigação Científica Tropical, Tapada da Ajuda, Lisboa, Portugal
5. Department of Biological Sciences, University of Alberta, Edmonton, T6G 2E9, Canada