Green Fescue Grassland: 50 Years of Secondary Succession Under Sheep Grazing

摘要

The 50-year succession of a depleted green fescue (Festuca viridula) subalpinegrassland in the Wallowa Mountains of northeastern Oregon was greatly influenced by historic soil erosion. The ecologic status of the grassland, grazed by domestic sheep prior to 1938, improved greatly between that time and 1988, with most of the improvement occurring between the 30th and 40th years of observation. Photography was retaken from fixed camera points to illustrate the changes.