Growth and Stand Density of Honduran Mahogany on Guam
Bevacqua, R.F. & M.L. Cruz.
A survey of a Honduran or big-leaf mahogany forest (Swietenia macrophylla King) was carried out in 2018-2019 at Piti on Guam. Results indicate the forest includes 516 mature trees that cover an area of 3.4 ha. The oldest trees are 92 years old. The average tree has a diameter at breast height (DBH) of 60.8 cm and a height of 17.7 m. The density is 152 trees/ha and the growth rate is 0.72 cm/year. The forest can be characterized by abundant natural regeneration (77,500 seedlings/ha), vigorous and constant growth and an absence of insect pests and plant diseases. A comparison with an earlier survey in 1992 indicates the forest has rapidly expanded, from 1.3 ha in 1992 to 3.4 ha in 2018.