Tree species diversity is no protection against bark beetle infestation
Date Time Tree species diversity is no protection against bark beetle infestation Ecologist from Freiburg investigates pest infestation in forests with mixed and monoculture tree stands. Their findings are published in Journal of Ecology. The Sixtoothed spruce bark beetle mainly attacked native species such as European spruce. Source: Flickr, Peter O’Connor In recent years, foresters have been able to observe it up close: First, prolonged drought weakens the trees, then bark beetles and other pests attack. While healthy trees keep the invaders away with resin, stressed ones are virtually d...