White Oak Regeneration in Canopy Gaps

In February 2020, USDA Forest Service scientist Stacy Clark planted 720 white oak (Quercus alba) seedlings on the Pisgah National Forest in western North Carolina. “White oak is declining in abundance across the eastern U.S., and we are concerned that wildlife species and industries around cooperages, distilleries, and flooring will be negatively affected without proactive…  More 

New Seed Orchards Installed with Camcore

Andy Whittier has collected hundreds of thousands of seeds during his 17 years with Camcore and the USDA Forest Service. Whittier regularly tests seed germination rates in order to evaluate their quality. That’s how he ended up with 1,200 Eastern hemlocks (Tsuga canadensis) in a greenhouse in Waynesville, North Carolina. The hemlocks were healthy three-year-old…  More 

Experimental Forest Network is Expanding

USDA Forest Service scientists, technicians, and professional support will soon be devoting more time, energy, and expertise to the Southern Experimental Forest Network. Beginning in 2015, Stephanie Laseter was tasked with initiating and developing the network, along with Jim Vose and Jim Guldin. “When we put out the call for detailers, we got an awesome…  More 

A Snapshot in Time of Threats to U.S. Forests

Hemlock woolly adelgid, gypsy moth, emerald ash borer: ask any USDA Forest Service scientist which insects and diseases pose a threat to our forests, and they could probably name a baker’s dozen. A huge number of insects and diseases have the potential to negatively affect tree species in the United States. However, the danger is…  More 

How Tree Diversity Affects Invasive Forest Pests

“Invasive insects and diseases pose both ecological and economic threats to our forest ecosystems,” says Qinfeng Guo, USDA Forest Service research ecologist. Guo is the lead author of a broad-scale study of U.S. forest data that examines the relationship between the number of native tree species and the number of nonnative forest pests. Across their…  More 

Hemlock Seedlings Released from Shade

Eastern hemlock typically grows in shady environments, but its world is now infested by hemlock woolly adelgids (HWA). The miniscule sap-sucking insects can kill mature trees in less than five years. “Eastern hemlock is a shade-tolerant species,” says USDA Forest Service research entomologist Bud Mayfield. “But extra sunlight may help it survive HWA infestation.” Extra…  More 

A Hemlock in the Town Square

This summer, I joined USDA Forest Service scientist Andy Whittier for a day of field work as a part of my internship with SRS Public Affairs and Science Communications. We traveled to Green Mountain, NC to check up on an experiment led by research entomologist Bud Mayfield on hemlock trees. Throughout the eastern U.S., the invasive…  More 

The Thorny Economics of Preventing Exotic Species Introductions

What if we lose tree species we know, love, and need? It has happened before. “Look at what happened to the American chestnut,” says U.S. Forest Service research forester Thomas Holmes. “Look at what’s happening right now to hemlock, redbay, and ash trees.” All three species, as well as many more, are threatened by non-native…  More 

SRS Shares Science at BugFest

On September 17, more than 35,000 insect enthusiasts gathered at the North Carolina Museum of Natural Sciences in Raleigh, NC. U.S. Forest Service employees were among them. As in years past, the Southern Research Station had a table at BugFest. Hundreds of children and adults stopped by to learn about SRS research and to see…  More 

Conserving Eastern Hemlock

Where can you go to find an eastern hemlock tree? Although threatened by the hemlock woolly adelgid, eastern hemlock has an extensive range. “Eastern hemlock grows throughout the southern Appalachians,” says U.S. Forest Service collaborator and ecologist Kevin Potter. Potter is also a forestry faculty member at North Carolina State University. “Hemlock grows in the…  More