UNGE School of Forestry
With a focus on botany and the medicinal and endemic plants of Bioko Island, Posa was a vital force in BBPP's field work and conservation research projects. He accompanied every Caldera expedition from 2001 to 2010, and assisted with the study abroad program's tropical field biology course. His death in January 2010 represents a great loss to UNGE and to BBPP.