This is a study of the ecology of the timberline and alpine vegetation of the Three Sisters which are located in the
central Oregon Cascades. The Sisters are a close group of three 1O,000-foot volcanic peaks. Volcanic activity within the last few hundred years as well as recent glaciation have...
The Mount Jefferson Primitive Area is one of three High Cascade wilderness areas in Oregon. It is second in size among these, covers approximately 136 square miles, and with the addition of a large roadless area in Warm Springs Indian Reservation represents the only one of these areas in Oregon...