Most people have heard of the hemlock woolly
adelgid that is attacking the hemlock forests of the Eastern U.S. You may not, however, realize how destructive this tiny alien insect has become or how imminent that destruction is for our area. It could, in fact, kill every single hemlock on the Cumberland Plateau, from Kentucky to Alabama. The
adelgid is ravaging the Smokies and other forests to the east, wiping out whole mountainsides of these ancient trees, along with their ecosystems, and turning them into giant white ghosts. This plague is being compared to the loss of the American chestnut forests a hundred years ago.
In February 2008,
Sewanee’s Jon Evans, professor of biology, organized a symposium that brought together a score of scientists and forest managers to discuss efforts to create methods to fight the hemlock
adelgid. Afterward Jon and one of his students, Erin
Tyrell, along with John
Christof, South Cumberland State Park manager, presented a program on the
adelgid to a group brought together by the Friends of South Cumberland. Using satellite imagery, Erin had conducted a research project that identified 8,000 hemlock trees in the canopy of Savage Gulf Natural Area, meaning that thousands more exist below the canopy and probably that many more exist in Fiery Gizzard Cove. These areas are the western limits of the eastern hemlock. Therefore, saving them here may be crucial to the survival of this wonderful tree.
Viable but expensive treatments, principally a systemic insecticide along with predatory beetles, are showing promise. The Friends of South Cumberland will be considering the creation of hemlock defense fund and may try to protect at least some of the hemlock stands in the natural areas. Individual property owners should also be aware that their hemlocks are in danger.
More information about the hemlock
adelgid may be found in an article at the website of the Friends of South Cumberland State Recreation Area –
www.friendsofscsra.org.
Visit
http://www.friendsofscsra.org/woolly-adelgid-pest-alert-updates.htm for frequent updates.
Sign up for Friends email news on the website so we can keep you informed.
You can also subscribe to the Friends blog feed here
http://www.friendsofscsra.org/atom.xml.
Thank you,
Latham Davis
Labels: Hemlock Adelgid Threat