Article Dans Une Revue Arboricultural Journal Année : 2025

Chronicles of an announced landscape disaster and lessons for the future: spatial modelling of the plane tree Canker stain

Résumé

Plane tree Canker stain which is caused by the fungus Ceratocystis platani is the most harmful disease of plane trees in the world. Despite a large corpus of scientific literature, there are no case studies of the biogeographical distribution and historical expansion of the tree and this harmful associated organism at the landscape scale. The connection between landscape ecology tools and concepts and the changes in composition or loss of major elements like remarkable trees of landscape heritage is neither established. Based on previous research into the detection and dispersal of Dutch Elm Disease in Western Europe and after the large felling of thousands of plane trees alongside the UNESCO World Heritage site “Canal du Midi” since 2006, representing a true landscape disruption which leads to local conflicts, the aim of this study was to evaluate and assess the effectiveness of the spatial dispersal of plane tree Canker stain in the city of Toulouse and its connections with the two waterways using open-access georeferenced data on dendrometrical characterics. It indicates how spatial modelling of ecological anti-corridors can help to slow down the spread of the disease and provide for gradual replacement of trees to restrain its spread along the “Canal Latéral à la Garonne”. Our contribution is also questioning how the landscape structures and connectivity can facilitate or impede the disease spread among host patches.

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Dates et versions

hal-05328506 , version 1 (23-10-2025)

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Guy Lemperiere, Damien Marage, Nicolas Robinet, Amadou Mbodji, Mansour Mbodji. Chronicles of an announced landscape disaster and lessons for the future: spatial modelling of the plane tree Canker stain. Arboricultural Journal, 2025, ⟨10.1080/03071375.2025.2555749⟩. ⟨hal-05328506⟩
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