title: Geography. Tree line shifts.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Pennisi
mesh_terms: D001130:Arizona; D029421:Cactaceae; D057231:Climate Change; D049672:History, 19th Century; D010781:Photography / Q000266:history; D036226:Seedlings; D013548:Sweden; D014197:Trees