Invasive, non-indigenous, phytophagous insects have caused widespread declines in several dominant tree species. The decline in dominant tree species may lead to cascading effects on other tree and microbial species and their interactions, affecting forest recovery following the decline. In the eastern USA, eastern hemlock (Tsuga canadensis (L.) Carr) is declining because of infestation by the ...

The distribution of the Middle Spotted Woodpecker (Leiopicus medius) is restricted to mature deciduous forests with large trees, mainly oaks (Quercus spp.). Intensive forest management resulted in loss many suitable habitats, thus resulting a decline population this species. This study aimed identify parameters foraging sites breeding season (April June) and non-breeding (other months). researc...

Oak decline is a general term used for the progressive dieback and eventual mortality of oak trees due to many compounding stressors, typically combination predisposing, inciting, contributing factors. While pinpointing individual causes in challenge, past studies have identified site stand characteristics associated with decline. In this study, we developed risk map Daniel Boone National Fores...

Oak regeneration problems have been noted in the Missouri Ozarks and elsewhere in the eastern United States. Alteration of disturbance regimes, competition from nonoak species, and high overstory stocking are believed to be major barriers that impede oak regeneration. We studied regeneration in upland oak forests that were harvested by both even-aged (clearcutting) and uneven-aged (single-tree ...

Bacterial leaf scorch is caused by Xylella fastidiosa Wells et al. The pathogen causes chronic leaf scorch and decline in elm, oak, sycamore, and maple. X. fastidiosa has a wide host range and is responsible for many other serious diseases including Pierce's disease of grape, phony disease of peach, and citrus variegated chlorosis. Its role in shade tree disorders has only recently been recogni...

The first requirement—competitive oak regeneration sources —is a restatement of the First Law of Oak Silviculture; i.e., successful oak regeneration after harvest will come from advance reproduction that exists in the current stand and stump sprouts from trees that are harvested from the current stand. I will discuss progress that has been made in assessing (1) the competitiveness of oak regene...