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 

The Climate Is Changing—What’s a Silviculturist To Do?

Climate change is here. In southern forests, it takes the form of novel disturbances – different frequency and severity of drought, fire, wind storms, insect outbreaks, even ice storms – or a combination of these stressors. “How will managers respond to the threats posed by changing climate conditions?” asks USDA Forest Service scientist James Guldin.…  More 

Dry Tropical Forests in the Caribbean and Latin America under Threat

The climate and fertile soils of the dry tropical forests of Latin America and the Caribbean have been important to humans as areas to grow crops since pre-Columbian times. Because of this and more recent use for intensive cultivation and cattle grazing, many of these forests have been cleared, with less than 10 percent of…  More