title: Defensive effects of extrafloral nectaries in quaking aspen differ with scale.
authors.affiliation: Department of Biology and Wildlife, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775-7000, USA.
authors.forename: Brent
authors.initials: B
authors.lastname: Mortensen
authors.forename: Diane
authors.initials: D
authors.lastname: Wagner
authors.forename: Patricia
authors.initials: P
authors.lastname: Doak