1. School of Agriculture Food and Wine, The University of Adelaide, Waite Campus, Urrbrae, Australia
2. Agroforestry Research Programme, National Forestry Resources Research Institute (NaFORRI), Kampala, Uganda
3. Systems Science Theme, World Agroforestry Centre (ICRAF), Nairobi, Kenya
4. Plant Science Applications and Research, ICT International, Armidale, Australia