Great Smoky Mountains National Park American Holly Monitoring

The data is from a multi-year study of the impact of an unidentified defoliator. Collected data include: diameter, height, crown class, percent live crown ratio, percent crown density, percent foliage transparency, percent dieback, percent defoliation, number of fruit clusters, a vigor rating, visible damage type(s) and new growth measurement (Shoot_Length). Crown ratings follow USDA Forest Service Forest Health rating system.