Bachman’s Warbler

From 1975 to 1979, Paul Hamel and colleagues spent 7,000 hours walking through the Francis Marion National Forest and adjacent lands in South Carolina, playing the song of the Bachman’s Warbler and listening for the response that never came. “Eventually, my adviser said ‘this is a biology department, not a history department!’ So I expanded…  More 

Seminole Bats on the Move

Over the past 48 years, Seminole bats (Lasiurus seminolus) have drastically expanded their range. “The northern edge of their summer range has expanded by 323 miles,” says Roger Perry, a USDA Forest Service research wildlife biologist. “That’s approximately 7 miles a year since 1970.” The western range is also expanding, possibly because forests are replacing…  More 

Ecosystem Resilience in a Changing World

Native forests and grasslands across the world face a range of threats, including climate change, urbanization, and exotic species invasions. Ecosystem restoration is frequently offered as a partial solution to these threats, because less stressed ecosystems seem better equipped to resist invasion. “By aiming to restore ecosystem resilience, plant communities can endure in the face…  More