title: Trees as environmental sentinels.
abstract: Trees are reliable indicators of the long-term effects of atmospheric pollution. As the botanical big game of the planet they are also standing guard and may be providing a warning signal about our own future.
authors.affiliation: Liverpool John Moores University, Byrom Street, Liverpool L3 3AF. n.m.dickinson@livjm.ac.uk
authors.forename: N M
authors.initials: NM
authors.lastname: Dickinson
mesh_terms: D000397:Air Pollution; D003247:Conservation of Natural Resources / Q000379:methods*; D004784:Environmental Monitoring / Q000379:methods*; D014197:Trees / Q000254:growth & development / Q000502:physiology*; D014329:Tropical Climate