One example of mutualism in the boreal forest?

An example of mutualism in the boreal forest is the relationship between moose and willows. Moose browse on willow twigs and leaves, which helps to keep the willow plants in check and prevents them from becoming too dominant in the ecosystem. In return, the willows provide moose with food and shelter. The moose also disperse the willow seeds through their scat, which helps to ensure that the willow population is maintained.