Portugal's forests are home to a diverse array of tree species that vary based on location. In the north, deciduous trees like oak and chestnut are common, while evergreen oaks dominate the south. Common species include Portuguese oak, cork oak, black oak, and holm oak. However, deforestation threatens biodiversity as trees are cut down for urban development, agriculture, and raw materials. Loss of forest cover endangers some species and could cause others to disappear from Portugal entirely.