Tree health has come into focus more sharply over the past decade as the detrimental impacts of pest and disease outbreaks on native and commercial forest tree species are being seen first-hand across the UK landscape. Two main mechanisms are causingan increase to pest and disease threats: the arrival of alien species facilitated by the global plant trade (Brasier, 2005, 2008; Santini et al., 2018); and climate change, which alters the environment, impacting tree growth as well as the suitability for pest and pathogen development and dispersal (Choat et al., 2018; Seidl et al., 2017). In the coming years we expect to see changes to the distribution, occurrence and severity of many arboreal pests and diseases. Acute oak decline (AOD) is one of the diseases that we expect will be aggravated by climate change. Here we give an update on current research on AOD and its management that should contribute to reducing the expected impacts of climate change on the disease.
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