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The Aspen Project

Quaking aspen (Populus tremuloides) is the most widely distributed tree species in North America. Despite its ability to adapt to disturbance, quaking aspen is declining throughout much of its native range. The Aspen Project is a continuing research project at Oregon State University for the study of quaking aspen and its decline in the western United States.

View Dr. Ripple's video on aspen, elk and wolves in Yellowstone (28 MB).

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Aspen, wolf, and wildlife photos

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News articles about wolves and aspen

hits since May 1998.

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