Why are aspen dying?
Monday, July 1, 2013 - 07:00
in Biology & Nature
(Phys.org) —If Utah's quaking aspen appear to be quaking more than usual this summer, the trees have reason to tremble, says a Brigham Young University biologist. In dappled forests across the West, aspen trees are battling deadly killers from heat stroke to bud-nipping predators to tree "heart attacks."