Inventaire des arbres-hôtes de la processionnaire du pin à l'interface ville-forêt-champs

AN INVENTORY OF HOST TREE SPECIES OF THE PINE PROCESSIONARY MOTH AT THE INTERFACE BETWEEN URBAN, FOREST AND ARABLE AREAS An inventory of host tree species of the pine processionnary moth was carried out in an urban area embedded within both forest andarable areas in order to assess the impact of trees outside forest (TOF) upon landscape connectivity for this forest insect.In comparison with the neighbouring forests, the number of pines, cedars and douglas firs found in thestudy site was low but tree density was high enough to generate a high level of connectivity of the potential host tree species of the moth. Moreover, the most attacked trees are the most planted ones. The highest proportion of trees in this inventory was found in private gardens. Public policies aiming to manage this pest species by modifying ornamental planting practices need to take in account the private part of the urban tree patrimony.