Beetles will have Impact on the Landscape WYOMING (wpr) - Wyoming forests impacted by the bark beetle epidemic are bound to undergo ecological shifts for decades to come. Greg Hayward is the regional wildlife ecologist for the U.S. Forest Service and an adjunct professor at the University of Wyoming. He told Addie Goss those ecological changes include shifting dynamics between animals in the forest. It all starts with which trees are overhead. © Copyright 2009, wpr