While the climate affects vegetation, the reverse is also true. In some parts of the world this effect may be large enough to create positive feedback loops that lead to alternative stable states. Likely examples include the western Sahara and parts of the Amazon. At the same time small scale feedbacks can create local alternative stable states in vegetation.
We work with Victor Brovkin, Max Rietkerk and others on understanding how the interaction of such feedbacks at different scales affect the overall stability properties of the system.