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 

Carolina Hemlock Populations: Isolated and Imperiled

Hemlocks are under attack. U.S. Forest Service scientists and their partners are working to save the native conifers from the hemlock wooly adelgid (HWA), an invasive insect from Japan. Carolina hemlock (Tsuga caroliniana) trees can survive HWA infestation for a decade or more but often die within four years. Carolina hemlocks grow in tiny, isolated…  More 

Eucalyptus or Loblolly: Which Uses More Water?

When asked which tree uses more water, the native, industry favorite loblolly pine or the ultra-fast growing immigrant from Australia, Eucalyptus, U.S. Forest Service biological scientist Chris Maier had a quick answer: both. “Growing wood requires water,” says Maier. Loblolly and slash pines currently serve as the main sources of wood fiber in the South,…  More 

Giant Stag Beetles

Up to 30 percent of all forest insect species depend on wood that is dead or dying. “Such species are among the most threatened insects in Europe,” says U.S. Forest Service scientist Michael Ulyshen. “However, very little is known about their diversity or conservation status in North America.” In the U.S., the giant stag beetle…  More 

Hybrids in the Seed Orchards

Shortleaf pine is under siege, and one of the threats has emerged in seed orchards. “In some shortleaf seed orchards, 10 percent of trees are hybrids,” says U.S. Forest Service research geneticist Dana Nelson. “Although the majority we’d consider shortleaf pine, even a few hybrids is enough to raise concern.” To some extent, shortleaf and…  More 

Shortleaf Pine: What’s in the Genes?

Despite shortleaf pine’s importance, relatively little is known about its genetics. “The lack of knowledge is especially apparent in this era of molecular genetics and genomics,” says U.S. Forest Service research geneticist Dana Nelson. Nelson and his colleagues recently reviewed shortleaf pine genetics, and their implications for restoration and management. The research team included Oklahoma…  More 

Diagnosing and Managing for Root Disease in Southern Pines

Southern Regional Extension Forestry (SREF) recently published a new technology bulletin on the biology, diagnosis, and management of Heterobasidion root disease in southern pines. U.S. Forest Service plant pathologists Tyler Dreaden, Southern Research Station (SRS), and Michelle Cram, Forest Health Protection, co-authored the publication with Jason Smith from the University of Florida and SREF’s David…  More 

Forest Health Research and Education Center Shares $3 Million NSF Grant

The Forest Health Research and Education Center (Forest Health Center), a collaborative project among the Forest Service Southern Research Station (SRS), the University of Kentucky, and the Kentucky Division of Forestry, will share a $3 million grant from the National Science Foundation with researchers from Washington State University (serving as lead), the University of Tennessee,…  More 

American Chestnut, Past and Present

The Silvics of American Chestnut , a general technical report (GTR) available from the U.S. Forest Service Southern Research Station (SRS), describes the habitat, life history, special uses, genetics, and restoration of the American chestnut (Castanea dentata). The publication is the result of collaboration between G. Geoff Wang, the lead author, his colleagues at Clemson…  More 

Years After Apollo 14, Moon Pines Continue to Travel Around the World

Apollo 14 landed on the moon in 1971, the third manned mission to land on Earth’s only natural satellite. The spacecraft carried an unusual cargo – tree seeds. Astronaut Stuart Roosa — previously a smoke jumper for the U.S. Forest Service — carried several hundred seeds from loblolly pine and four other tree species with him on the…  More