The cork oak is grown for the production of cork in several Mediterranean countries. The centers of cork production are in southern Portugal (accounting for 50% of the total production) and southern Spain, where low trees with large crowns and strong branches are grown in large areas, which provide the highest yield of cork. These mostly extensively managed habitats are called "montados" in Portugal and "dehesas" in Spain. They are considered to be extremely valuable from the point of view of biodiversity and cultural heritage.