Skip to Main Content
Poor stem form as a potential limitation to private investment in koa plantation forestry in HawaiiAuthor(s): Paul G. Scowcroft; James B. Friday; Janis Haraguchi; Travis Idol; Nicklos S. Dudley
Source: Small-scale Forestry 9: 243-262
Publication Series: Scientific Journal (JRNL)
Station: Pacific Southwest Research Station
View PDF (471.21 KB)
DescriptionProviding economic incentives to landholders is an effective way of promoting sustainable forest management, conservation and restoration. In Hawaii, the main native hardwood species with commercial value is Acacia koa (koa), but lack of successful examples of koa plantation forestry hinders private investment. Financial models, which have been offered to encourage investment, assume that a particular minimum volume of merchantable wood will be harvested at rotation age. No studies have been done to determine the appropriateness of the assumed volumes for koa plantations. Three 18- to 28-year-old koa plantations were studied to determine butt-log size, crown class and crop tree potential. Estimates of present and future merchantable sawtimber volume were made for each plantation. Results indicate that most existing plantation koa trees fork so close to the ground that they will produce little to no merchantable wood. Projected sawtimber yields from crop trees in these plantations at age 45 years are 10, 15 and 90 m3/ha, which are below the 135 m3/ha yield used in the most recent financial analysis of returns on investment in koa forestry. Relaxing the crop tree criteria gives higher volume yields, but two plantations still fall short of the assumed target yield by 43 and 52%.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationScowcroft, Paul G.; Friday, James B.; Haraguchi , Janis; Idol , Travis ; Dudley, Nicklos S. 2010. Poor stem form as a potential limitation to private investment in koa plantation forestry in Hawaii. Small-scale Forestry 9:243-262.
- Koa (Acacia koa) ecology and silviculture
- Applied genetic conservation of Hawaiian Acacia koa: an eco-regional approach
- Molecular genetic characterization of the koa-wilt pathogen (Fusarium oxysporum): Application of molecular genetic tools toward improving koa restoration in Hawai'i
XML: View XML