You are here: Home
/ Publication Information
Title: Response of native and invasive plant species to selective logging in an Acaia koa-Metrosideros polymorpha forest in Hawai'i
Author: Friday, James B.; Scowcroft, Paul G.; Ares, Adrian.;
Source: Applied Vegetation Science 11: 471-482
Publication Series: Scientific Journal (JRNL)
Description: Questions: Is the introduced timber species Fraxinus uhdei invasive in Hawai‘i? Has logging disturbance facilitated the spread of Fraxinus and other alien species?
Location: Windward Mauna Kea, island of Hawai‘i.
Methods: We surveyed 29 plots which were established before selective logging of the native tree Acacia koa in 1971 to determine if Fraxinus spread beyond the borders of an existing plantation and if other alien species increased. We created gaps in the canopy of the Fraxinus plantation and measured seed rain and regeneration, and we sampled foliar and soil nutrients inside and around the plantation.
Results: Basal area of Fraxinus increased from 0.7 m2.ha-1 in 1971 to 10.8 m2.ha–1 in 2000. Fraxinus was not found in plots that were located more than 500 m from those where it occurred in 1971 except along a road. Basal area of Acacia koa decreased after logging but subsequently recovered. Occurrence of the alien vine Passiflora tarminiana and alien grass Ehrharta stipoides decreased. Seedling regeneration of Fraxinus was prolific in gaps but did not occur under the canopy. Basal area of Fraxinus did not correlate with soil nutrient concentrations.
Conclusions: Fraxinus was able to regenerate following logging more rapidly than native tree species. Basal area growth of Fraxinus was great enough to offset a decline in native trees and cause an increase in forest productivity. If the Fraxinus plantation is harvested, managers should plan ways of favoring regeneration of the native Acacia which is more valuable both for timber and for conservation.
Keywords: Cibotium, Disturbance, Ehrharta stipoides, Fraxinus uhdei, Passiflora tarminiana, Tropical ash, Tree fern, Tropical island.
- 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.
XML: View XML
Friday, James B.; Scowcroft, Paul G.; Ares, Adrian. 2008. Response of native and invasive plant species to selective logging in an Acaia koa-Metrosideros polymorpha forest in Hawai'i. Applied Vegetation Science 11: 471-482
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility