|Tuesday, Jun 12, 2012|
The presence of invasive emerald ash borer beetles has been confirmed in the park.
Last week, beetles were discovered near Sugarlands Visitor Center and in the Greenbrier area, on the Tennessee side of the park. The insects were recovered during routine inspection of traps and sent to a Department of Agriculture entomologist for confirmation.
The emerald ash borer was first discovered in the U.S. in Michigan in 2002 and has steadily spread from there, damaging millions of ash trees across the country. The half-inch-long beetle lays eggs in bark crevices on all species of ash. Upon hatching, larvae burrow under the bark, creating feeding tunnels that interfere with the tree’s ability to translocate nutrients and fluids. The tree gradually starves and eventually dies.
The park began trapping the beetles in 2008 as part of a broader effort coordinated by the Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS). Under APHIS guidance, traps were placed in a 100-mile-wide band outside the previously known infested area. At the time, the park was considered to be at high risk for new infestation because of the sizable number of visitors who reside in already infested counties.
The spread of emerald ash borer beetles primarily results from transport of infested logs and firewood. A park-wide ban remains in effect for any firewood originating from a location for which a federal or state quarantine is in effect. A list of all quarantined areas may be found at this link.
Park managers are evaluating a range of options in regard to addressing the emerald ash borer’s presence in the park.