1. Departamento de Botânica; Universidade Federal de Pernambuco; Recife Brazil
2. Instituto de Investigaciones en Ecosistemas y Sustentabilidad; Universidad Nacional Autónoma de México; Morelia Mexico
3. Department of Agricultural and Environmental Sciences (DiSAA); University of Milan; Milan Italy
4. Forest Ecology and Forest Management group; Wageningen University; Wageningen The Netherlands
5. World Agroforestry Centre (ICRAF); Nairobi Kenya