Spatial and temporal distribution of imidacloprid in eastern hemlock
in the Southern Appalachians.
Several potential focus areas with significant eastern hemlock
stands in Pennsylvania are identified for further study," noted Ferretti.
They will continue their breeding efforts, hopefully finding a way to incorporate the aesthetic traits of eastern hemlock
and the HWA resistance of exotic hemlocks into successful hybrids.
Use of Coniferous Species as Nest Lining--Red-shouldered Hawks in both study areas apparently used red pine, white pine, and eastern hemlock
more than expected based on availability.
decline within the core of the species' range has been widely documented by independent studies (e.
This result supports Wilson's (1962) conclusion that ring shake in eastern hemlock
is not strongly linked to site attributes and location.
This exotic adelgid is parthenogenetic, completing two generations annually on eastern hemlock
The area varied in elevation from 200 to 230m and was dominated by mature sugar maple (Acer saccharum), with yellow birch (Betula alleghaniensis), red maple (Acer rubrum), eastern hemlock
(Tsuga canadensis), and white spruce (Picea glauca) occurring at a lower density.
Hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), is an exotic insect species capable of rapidly reducing populations of eastern hemlock
throughout the eastern United States (McClure & Fergione 1977; Buck et al.
His work with a natural enemy of the hemlock woolly adelgid, an invasive insect pest, could improve chances for the survival of the Eastern hemlock
, long a favored tree in New England forests for both economic and ecological benefits.
The species normally selects a territory that contains groups of eastern hemlock
(Tsuga canadensis) and other conifers (e.
writes that western hemlock differs from eastern hemlock
in that "the wood is of very fine texture, light in weight and straight in grain, and it has about the same workability as pine.