How shrub encroachment under climate change could threaten pollination services for alpine wildflowers: A case study using the alpine skypilot, .

Unlabelled: Under climate change, shrubs encroaching into high altitude plant communities disrupt ecosystem processes. Yet effects of encroachment on pollination mutualisms are poorly understood. Here, we probe potential fitness impacts of interference from encroaching (willows) on pollination quality of the alpine skypilot, .