For more than half a century, scientists have converged on Hubbard Brook Experimental Forest in New Hampshire's White Mountains to explore how forest ecosystems work. The site was established by the U.S. Forest Service to study the relationship between forests and New England's water supply.
Each year, more than 25 million shipping containers enter the U.S. All too often, highly destructive forest pests are lurking among their imported goods. Wood boring insects arrive as stowaways in wood packaging, such as pallets and crates.
In the Adirondacks and the Catskills, beech bark disease is taking out the largest beeches. Emerald ash borer, a little beetle that has killed over 100 million ash trees in the Midwest, is now active throughout the state, including the Capital Region.
Growing reliance on both trees and trade makes imported forest pests the most pressing, and under-appreciated, forest health issue in the US today. Five high-priority policy actions that build on proven prevention measures can reduce the arrival and establishment of new forest pests.
Hemlock is a "foundation" tree species in eastern forests and its presence defines the properties of a unique ecosystem that is presently declining due to the introduction and spread of an invasive insect, the hemlock woolly adelgid.
We measure key aspects of forest productivity, species composition and nutrient cycling in the mixed-oak forest at Cary. This long-term monitoring allows us to track trends in the forest ecosystem resulting from air pollution and other stresses.
In forests dominated by mast-producing trees,consumers are confronted with the sporadic production of abundant resources. Animals, such as the white-footed mouse and eastern chipmunk, rely on these pulsed resources.
Stabilizing a deer population requires a balance between annual recruitment and mortality. For a population reduction, mortality must exceed recruitment. Using hunting as our primary management tool, our hunters are required to focus their efforts on culling females as well as males.
Presently, hunter observations are used as the technique to assess if Cary controlled hunts are stabilizing local deer numbers. Night spotlight counts of deer have been used to index trends in abundance in the past. The observations of deer by bow hunters, has yielded data that have correlated very well with spotlighting numbers with the observation data easier and less expensive to obtain.
Since 1983, Mr. Winchcombe has been monitoring the intensity of deer browsing on the major tree species on the Cary Institute's grounds. Browsing intensity varies annually, with over-winter browsing linked to total winter snowfall amounts. Browsing studies help govern deer management strategies, with heavy browsing highlighting the need to further reduce local deer numbers.