Reproductive ecology of Aquilaria spp. in Indonesia  Author:
Soehartono, T. & Newton, A. C. Date Published: January 2001
Forest Ecology and Management  152 (1-3)  Aquilaria spp.
(Thymelaeaceae) are the principal source of Gaharu, a valuable
resin, yet information about their reproductive ecology is
almost entirely lacking. Individuals of six species (A.
beccariana, A. crasna, A. filaria, A. hirta, A. malaccensis and
A. microcarpa) in cultivation in Indonesia were investigated to
assess reproductive phenology, pollination, seed production and
germination. Seed production and seedling dispersion were also
assessed in natural populations of A. beccariana, A. malaccensis
and A. microcarpa in Kalimantan.  Most of the selected trees
flowered during the dry season, fruits requiring between 36 and
72 days to develop, depending on the species. Twenty different
species of insect were recorded visiting flowering trees. The
probability of flowers developing into fruit varied between
species from 0.04 to 0.43, although f