PNAS
doi: 10.1073/pnas.1221278110 PNAS April 8, 2013 Authors Marc Macias-Fauria, Biodiversity Institute and Edward A. Johnson
View Journal Article / Working PaperForests are expected to expand into alpine areas because of climate warming, causing land-cover change and fragmentation of alpine habitats. However, this expansion will only occur if the present upper treeline is limited by low-growing season temperatures that reduce plant growth.