ForWarn Provides New Insight into Duration and Impacts of Forest Disturbances
Quantifying the magnitude of a disturbance to forest vegetation is of primary importance in forest health monitoring; however, the duration, or how long that disturbance lasts, is equally important for determining the full impact to vegetation health. Determining how much of a threat disturbances pose to forest plants is critical, but knowing how long a particular disturbance lasts is equally important. To provide insight into disturbance duration, ForWarn researchers have developed a new seasonal forest monitoring product that distinguishes ephemeral (short-lived) disturbances from lasting disturbances. For example, storms, insect defoliations, and light fires are common in the early growing season, but sometimes trees can quickly grow new leaves, causing even the most extreme damage to diminish by mid-summer. Where damage involves more than the leaves, effects can be more lasting. The new ForWarn disturbance duration products are designed to measure those nuances, as well as help forest managers see past lingering obstacles to satellite imagery, such as persistent cloud cover. ForWarn researchers currently produce disturbance duration products three times during each growing season.
Forest Service Partners