Conservation prospects for threatened Vietnam tree species: results from a demographic study

Given that changes in population size are low, information on future prospects of long-lived tree species is necessarily obtained from demographic models. We stud-ied six threatened tree species in four Vietnamese protected areas: the broad-leaved Annamocarya sinensis, Manglietia fordiana and Parashorea chinensis, and the coniferous Calocedrus macrolepis, Dacrydium elatum and Pinus kwangtunggensis. With data from a 2-year field study on recruitment, growth and survial, we construted matrix models for each species. All species showed continuous regeneration, as indicated by annual seedling recruitment and inverse J-shaped population structures.

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