Closer to Understanding Enigmatic Mussel Declines

Just by existing and eating, mussels improve water quality. They are filter feeders, which means they eat small pieces of organic matter that float past them. But mussels are dying, often in streams that otherwise seem healthy. Many streams that formerly supported diverse mussel communities now are essentially defaunated. These events are enigmatic because other…  More 

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 

Timing Prescribed Fire to Maximize Longleaf Pine Growth

Longleaf pine (Pinus palustris) needs fire to thrive. But if seedlings burn too late in the growing season, they may not have enough energy to re-grow their scorched leaves and replenish their starch reserves before spring of the next year. “When seedlings are so short that a prescribed fire is likely to scorch all of…  More 

Black Locust & Drought

With its symbiotic bacteria, black locust (Robinia pseudoacacia) makes its own nitrogen fertilizer – and can share it with other tree species. “In early successional temperate forests, symbiotic nitrogen fixation is often the main source of new nitrogen,” says USDA Forest Service scientist Chelcy Miniat. But drought could slow the rate of symbiotic nitrogen fixation,…  More 

Genetics of Shortleaf and Longleaf Pine in Seed Orchards

Shortleaf pine (Pinus echinata) and longleaf pine (Pinus palustris) ecosystems have been dwindling for decades. Restoration is a huge priority for the USDA Forest Service, the Longleaf Pine Alliance, the Shortleaf Pine Initiative, and many others. Restoration requires seed, and on National Forest System lands the seed comes from USDA Forest Service seed orchards. The…  More 

Workshop on Shortleaf Pine in the Southern Appalachians

On March 3 and 4, 2020, about 25 silviculturists, foresters, fire management officers, timber specialists, and other USDA Forest Service experts gathered for a two-day workshop on shortleaf pine (Pinus echinata). In the southern Appalachians, shortleaf pine restoration is a major priority for national forests and others. The species has an extensive range but its…  More 

Silviculture to Restore Southern Fire-Adapted Pines

Native, mature southern pine ecosystems are dwindling on the landscape, and the plants and animals that depend upon them are in trouble as well. “Living and working in Arkansas, I sometimes forget that shortleaf pine as far as the eye can see is uncommon outside of this area,” says USDA Forest Service scientist Jim Guldin.…  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 

Green Line Meeting in Arkansas Promotes Collaboration

On September 10, a Green Line meeting brought USDA Forest Service researchers and managers together, along with state partners. Participants represented the Southern Research Station, the Ouachita National Forest, the Ozark National Forest, and the Arkansas Forestry Commission. Twenty-eight people attended the meeting, including leadership from SRS, the Southern Region and Arkansas state forester Joe…  More