The data which form the basis of the biomass tables and the research described here are from an international trial of Central American dry zone hardwood species, initiated by the Oxford Forestry Institute (OFI) in 1984 and funded by the Overseas Development Administration of the United Kingdom (ODA). The objective of the international trial was the preliminary testing and comparison of these species over a range of sites and climatic conditions throughout the semi-arid tropics. This region can be broadly defined as lying in the rainfall range 500-1500 mm, with a pronounced dry season of up to eight months (less than 50 mm/month rainfall during the dry season).
Stewart, J.L.; Dundson, A.J.; Hellin, J.J.; Hughes, C.E. Wood biomass estimation of Central American dry zone species. (1992) 83 pp. ISBN 0 85074 124 6