Woody semi-natural habitats serve as permanent habitats and hibernation sites for
natural enemies and, through spillover processes, they play an important role in the
biological control of insect pests. However, this service is also dependent on the
amount and configuration of the dominating woody habitat types: linear landscape elements
(hedgerows, shelterbelts), and more evenly extended plantations. Relating natural
enemy action to the landscape context can help to identify the effect of woody habitats
on biological control effectiveness.
