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  • Staff

    Sonja Steinke

    Research Entomologist
    Tree health
  • Service

    Who we are

    Forest Research (FR) is the research agency of the Forestry Commission (FC) and Great Britain’s principal organisation for forestry and tree-related research. Forest Research is internationally renowned for the provision of science, research, evidence, data and services in support of sustainable forestry. Our vision To be a world leader in applied forest science and a trusted and […]
  • Publications

    Welsh Plant Health Surveillance Network Programme: 2023 review

    Lead Author: Racheal Lee
    This document is an Annex to the Welsh Plant Health Surveillance Network Programme 2022 Review, and reports on the second year of the WPHSN activities undertaken on behalf of the Welsh Government. It describes a network of insect and spore traps placed at strategic woodland sites across Wales to monitor and record the presence/absence of invasive pests and pathogens which may negatively affect our trees, woodlands, and forests.
  • Publications

    Welsh Plant Health Surveillance Network Programme: 2022 review

    Lead Author: Racheal Lee
    This document describes and reports on the first year of activities undertaken for the Welsh Plant Health Surveillance Network (WPHSN), a ground-breaking Welsh Government funded project to monitor native and invasive pests and pathogens that may pose a threat to health of plants and trees across Wales.
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  • Climate Change Hub
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  • Trees

    Ash (AH)

    A native broadleaved tree with excellent timber properties that is an important host for many species of flora and fauna and consequently of high ecological value. There are currently approximately 151,000 ha of ash in Britain accounting for 11% of all broadleaved woodland (IFOS). Ash is under severe threat from the disease Chalara ash dieback (Hymenoscyphus fraxineus), and its abundance in the British landscape is likely to decrease.  The ability to plant ash is now severely restricted due to concerns over tree health. Ash is a native tree and categorised as a principal tree species. These are tree species where silvicultural knowledge provides confidence to enable successful deployment across Britain. The species are either already widely used or are increasing in usage. They will continue to be important unless affected by a new pest or disease or become adversely affected by climate change.
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