We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Developing a Stand Hazard Index For Oak Decline in Upland Oak Forests of the Ozark Highlands, Missouri.
- Authors
Zhaofei Fan; Xiuli Fan; Spetich, Martin A.; Shifley, Stephen R.; Moser, W. Keith; Jensen, Randy G.; Kabrick, John M.
- Abstract
Black oak (Quercus velutina Lam.) and scarlet oak (Quercus coccinea Muenchh.)—two major components (44% of total stand basal area) of upland oak forests-ore suffering severe decline and mortality in the Ozark Highlands, Missouri. However, factors influencing their survival (mortality) are not well understood. In this study we quantified how stand and tree-level predisposing factors are associated with survival of black and scarlet oaks. Sixteen-year monitoring data from the Missouri Ozark Forest Ecosystem Project (MOFEP) indicated that overall annual mortality of black and scarlet oaks averaged 2.2 and 1.7%, respectively, three to five limes higher than expected (around 0.5%) for while oak, a common associate. For the first 8 years of the study (1990-1 998), survival roles of block and scarlet oaks were similar. Thereafter, the survival role of black oak declined relative to scarlet oak. Using the classification and regression tree (CART) method we classified black oak and scarlet oak trees into seven and nine risk groups, respectively, that differed significantly in rates of tree mortality. Groups were distinguished based on tree diameter, crown class, and size relative to competitors. An oak decline and mortality hazard index was thus developed as the weighted means of risk group mortality, which can help managers prescribe species-specific silvicultural treatments to help mitigate oak decline and associated mortality.
- Subjects
MISSOURI; QUERCUS velutina; MORTALITY; TREE hazard evaluation; SILVICULTURAL systems; FORESTS &; forestry
- Publication
Northern Journal of Applied Forestry, 2011, Vol 28, Issue 1, p19
- ISSN
0742-6348
- Publication type
Article
- DOI
10.1093/njaf/28.1.19