Carbon Pools and Fluxes in Southern Appalachian Forests

An estimated 35 percent of the global terrestrial carbon is stored in soil and biotic carbon pools, such as forests. These pools can store or release carbon. Because forests store immense amounts of carbon, forest management is becoming part of efforts to increase carbon sequestration and mitigate greenhouse gas emissions. Long-term research from the USDA…  More 

Darter Conservation

Increasingly, recovery plans for imperiled fish species include raising them in captivity and releasing them in the wild. Crystal Ruble of Conservation Fisheries, Inc, with SRS researchers Ken Sterling and Melvin Warren published a protocol for captive propagation of the Yazoo Darter (Etheostoma raneyi). The researchers also summarize its early life-history. Compared to other darter…  More 

When Birds Attack Snakes

It’s a bird! It’s a plane! No, it’s … birds attacking a Jamaican boa? In a recent study by USDA Forest Service scientists Richard Schaefer and Craig Rudolph (retired), along with colleagues from Jamaica and Washington, DC, the previously undocumented mobbing of Jamaican boas is brought to scientific light. The act of multiple birds screeching…  More 

Assessing Surface Water Quality in the Mississippi Delta

USDA Forest Service scientists are measuring surface water quality in the Big Sunflower River watershed of the Mississippi Delta to better understand eutrophication of the Gulf of Mexico. Extensive crop production contributes nutrients and suspended solids and leads to concerns about low dissolved oxygen and pathogens. Ying Ouyang, Ted Leininger, and colleagues monitored water quality…  More 

Wood-Boring Beetles Not the Primary Cause of Sugarberry Mortality

In the past decade, sugarberry trees (Celtis laevigata) have been rapidly declining throughout South Carolina and Georgia. Alongside University of Georgia researcher Emilee Poole, USDA Forest Service scientists Scott Horn, Michael Ulyshen, and others studied the distribution and biology of the wood-boring beetle Agrilus macer to determine its role in recent sugarberry mortality. Using sugarberry…  More 

Trees Survive Windstorms in Upland Hardwood Forest

In 1995, Hurricane Opal toppled trees throughout the South, including parts of the southern Appalachians. Wind is a common canopy disturbance in upland oak-hickory forests, but little has been reported on naturally formed large gaps of more than six trees where a partial canopy remains. With Erik Berg, SRS researchers Stanley Zarnoch and Henry McNab…  More 

Temperature Drives Invasive Asian Earthworm’s Hatching Success

Amynthas agrestis is an Asian earthworm that has become increasingly abundant in North American forests. The earthworms consume massive quantities of leaf litter, disrupt established food webs, and outcompete native species. Ideas for control have been limited by the lack of information on their life history traits, such as optimal hatching temperature. With UGA graduate…  More 

Introducing Science Shorts

SRS is adding a new feature to CompassLive: Science Shorts. Science Shorts are 200-word summaries, similar to a news brief, that highlight one or two key findings from a new research paper. They were inspired by The Wildlife Professional’s Science in Short columns. SRS Science Shorts will not replace the longer CompassLive articles, but their…  More 

Modeling Study on Cattle Feed Crops & River Flow Depletion

A new study uses a USDA Forest Service modeling tool – the Water Supply Stress Index, or WaSSI, ecosystem services model – to explore the relationship between water use, river flows, and fish populations across the conterminous U.S. Brian Richter from the University of Virginia led the study. SRS researcher Peter Caldwell’s expertise with WaSSI…  More 

Targeted Deer Removal Can Reduce Deer-Vehicle Collisions

Deer-vehicle collisions are common, dangerous, and costly examples of human-wildlife conflict in the U.S. Targeted removal (sharpshooting) of deer that linger on the side of the road has proven effective in reducing such conflict in urban areas. USDA Forest Service research wildlife biologist John Kilgo, along with collaborators, tested this strategy in a secure, wooded…  More