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Article
Silvicultural implications arising from a simple simulation model for Endospermum medullosum in Vanuatu
International Forestry Review
  • John C Grant, Southern Cross University
  • Kevin S Glencross, Southern Cross University
  • J Doland Nichols, Southern Cross University
  • Graeme Palmer, Southern Cross University
  • M Sethy, Department of Forests, Vanuatu
  • Jerome K Vanclay, Southern Cross University
Document Type
Article
Publication Date
1-1-2012
Peer Reviewed
Peer-Reviewed
Abstract
Whitewood (Endospermum medullosum) is a tree species that shows promise for plantation timber production in Vanuatu, but few growth data are available to inform yield forecasts. Three simple relationships summarizing stand dynamics, namely height-age, diameter-height-stocking, and mortality-basal area relationships, were calibrated with data from 15 plots to form the basis of a model for silvicultural and management decisions. Despite the simplicity of the model, it offers predictions consistent with independent data. The model suggests that the optimal silviculture involves planting 635 stems/ha, thinning at 20 and 26 years, and clearfelling at age 36 when trees have a diameter of 55 cm dbh. However, many options offer a net present value within 5% of this nominal optimum. The flexibility to vary the timing and intensity of harvests over a wide range while maintaining good financial returns, coupled with good growth and timber properties, suggests that whitewood warrants further domestication and promotion in Vanuatu.
Citation Information

Grant, JC, Glencross, KS, Nichols, JD, Palmer, G, Sethy, M & Vanclay, JK 2012, 'Silvicultural implications arising from a simple simulation model for Endospermum medullosum in Vanuatu', International Forestry Review, vol. 14, no. 4, pp. 452-462.

Published version available from:

http://dx.doi.org/10.1505/146554812804715874