David Slawson
Imperial College London – visiting researcher and former Director of OPAL
Coordinator of THSCN and Observatree volunteer. Current priorities: to expand the tree health surveillance network, to make data more openly accessible to researchers, land managers and the public, and to increase collaboration between the biosecurity and biodiversity communities.
Recent scientific publications:
Jane Barbrook
Animal & Plant […]
Not present in United KingdomNotifiable – See ‘Report a sighting’ belowScientific name of causal agent – Candidatus Phytoplasma ulmi (C. Phytoplasma ulmi)
‘Yellows’ is a plant disease caused by a group of organisms called phytoplasmas, which are specialised forms of bacteria. One of these phytoplasmas, Candidatus Phytoplasma ulmi, can infect elm trees (trees in the Ulmus […]
The annual reports of Forest Research for the year 1923-1924 which includes:– Nursery and plantation experiments (Scotland, England and Wales).– Permanent sample plots.(i) Growth of Scots and Corsican pine seedlings.(ii) Germination of seed.– Comparative growth of Norway and Sitka spruce seedlings in ordinary and peaty soils.– Peat Investigations(chemical and physical effect on growth of trees)– […]
Bronze birch borer (Agrilus anxius) is a wood-boring beetle pest of birch trees (Betula genus) which could do significant damage to the United Kingdom's birch trees if it became established here.
Diversity in forests is essential to conserve biodiversity and expand habitats, and to contribute towards enhancing landscape quality and recreation opportunities. In addition, introducing species and age diversity throughout a forest can increase their resilience to pests, diseases and fire, and extend economic opportunities.
This Practice Guide offers advice and ideas from which a forest manager […]
Present in United KingdomNotifiable – See ‘Report a sighting’ belowScientific name of causal agent – Fomitiporia punctata (F. punctata)
Picture: Lucien Rommelaars – Saxifraga
Elbow-patch crust is a disease of London plane trees (Platanus x acerifolia, also known as Platanus x hispanica). It is caused by the basidiomycete fungus Fomitiporia punctata (F. punctata).
The fungus was known before 2016 as Phellinus […]
Not present in United KingdomNotifiable – see ‘Report a sighting’ belowScientific name of causal agent – Ceratocystis platani
Canker stain of plane is a disease which can affect several species of plane trees (trees in the Platanus genus).
It is caused by the ascomycete fungus Ceratocystis platani (C. platani), which was formerly known as Ceratocystis platani f. […]
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