Silvicultural strategies for introduced tree species in northern Italy

The bio-deterioration of the historical heritage by fast growing and vigorous introduced tree species, and the reduction of native diversity, mostly in riparian, forest, wetland, and coastal habitats are considered amongst particularly relevant impacts for Italy. According to a recent survey of EU Life+ projects, the introduced tree species most often targeted for eradication by conservation projects across Europe are black locust (Robinia pseudoacacia L.), tree of heaven (Ailanthus altissima (Mill.) Swingle), red oak (Quercus rubra L.), and black cherry (Prunus serotina Ehrh.). In this chapter, we report on the few field experiences and success stories of silvicultural control of these introduced tree species in urban and natural habitats in northern Italy.