Skip to Main Content
A glimpse at future forests: predicting the effects of Phytophthora ramorum on oak forests of southern AppalachiaAuthor(s): H.L. Spaulding; L.K. Rieske
Source: Biol Invasions 13:1367–1375
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
PDF: View PDF (282.58 KB)
DescriptionThe highly pathogenic Phytophthora ramorum, causal organism of sudden oak death (SOD), is established in forests of the Pacific Northwest (USA) and is threatening invasion of other regions. Given the breadth of its host range, with dozens of asymptomatic ornamental hosts and with oaks, Quercus spp., in the red oak (Erythrobalanus) subgenus particularly susceptible, we investigated the consequences of its invasion and establishment in oak-dominated deciduous forests of the eastern USA. We evaluated the nature and extent of pathogen invasion using vegetation assessments coupled with growth simulations. The woody plant community was assessed in three strata (upper, mid- and lower) and was used to characterize forest composition and structure. Using the Forest Vegetation Simulator (FVS), we then projected woody vegetation growth 50 years into the future with and without the effects of SOD. In forest simulations lacking pathogen invasion, little change in composition or structure is forecasted. Both red oaks and white oaks (subgenus Leucobalanus) increase slightly but significantly over the length of the simulation. In contrast, in SOD affected forests our projections predict a significant loss of red oaks within 10 years of pathogen invasion. Basal area of white oaks and non-oaks is expected to increase more so in the absence of red oaks. The loss of red oaks to pathogen infection will result in greater increases in red maple, Acer rubrum, and yellow poplar, Liriodendron tulipifera, than in forests free of SOD. Loss of red oak represents a significant loss of hard mast, with potentially devastating consequences for wildlife. Red oak loss will also affect decomposition rates, nutrient cycling, forest structure, and timber values, with consequences for forest health and sustainability.
- 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.
CitationSpaulding, H.L.; Rieske, L.K. 2011. A glimpse at future forests: predicting the effects of Phytophthora ramorum on oak forests of southern Appalachia. Biol Invasions 13:1367–1375.
KeywordsSudden oak death, Quercus, Invasive species, Forest vegetation simulator, Modeling
- Changes in forest structure associated with oak decline in severely impacted areas of northern Arkansas
- Repeated burning alters the structure and composition of hardwood regeneration in oak-dominated forests of eastern Kentucky, USA
- Long-term effects of single prescribed fires on hardwood regeneration in oak shelterwood stands
XML: View XML