학술논문

WAR BELOW THE CANOPY.
Document Type
Article
Author
Source
National Parks. Winter2007, Vol. 81 Issue 1, p28-33. 6p.
Subject
*NATIONAL parks & reserves
*FORESTS & forestry
*FOREST health
*INSECTS as biological pest control agents
*ADELGIDAE
Language
ISSN
0276-8186
Abstract
The article reports on the struggle to preserve the hemlocks of the Appalachian forests from the wooly adelgid, an insect that's already destroyed some of the oldest stands of the tree. Introduced from Japan, the pest was first discovered in the U.S. in Richmond, Virginia in 1951. It has destroyed hemlock stands from Maine to Georgia. Workers in national parks and forests hope the introduction of an Asian beetle, the pest's natural predator, will preserve the remaining hemlocks. [ABSTRACT FROM PUBLISHER]