Skip to Main Content
Effects of variable-density thinning on understory diversity and heterogeneity in young Douglas-fir forests.Author(s): Juliann E. Aukema; Andrew B. Carey
Source: Res. Pap. PNW-RP-575. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 20 p.
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
Download Publication (897 KB)
DescriptionNine years after variable-density thinning (VDT) on the Forest Ecosystem Study, we examined low understory vegetation in 60 plots of eight stands (four pairs of VDT and control). We compared native, exotic, ruderal, and nonforest species richness among the stands. We used clustering, ordination, and indicator species analysis to look for distinctive patches of plant associations. Native, exotic, ruderal, and nonforest plant species diversity were higher in VDT stands compared to control stands for both forests. Differentiation of the understory into multiple distinct vegetation patches was not definitive, but there were trends toward greater heterogeneity in VDT stands.
- Visit PNW's Publication Request Page to request a hard copy of this publication.
- 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.
CitationAukema, Juliann E.; Carey, Andrew B. 2008. Effects of variable-density thinning on understory diversity and heterogeneity in young Douglas-fir forests. Res. Pap. PNW-RP-575. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 20 p.
KeywordsBiodiversity, forest management, indicator species, ordination, plant communities.
- Diversity and productivity of hypogeous fungal sporocarps in a variably thinned Douglas-fir forest.
- Manipulation of density of Pseudotsuga menziesii canopies: preliminary effects on understory vegetation.
- Six years of plant community development after clearcut harvesting in western Washington
XML: View XML