Every summer, the precious dehesas are threatened by bushfires; but this is not the only threat: a disease called “seca” causes big losses of cork and holm oaks. Due to the climate change, the region is becoming hotter and dryer – which means more stress for the trees. This in turn leads to less vitality of the tree and makes it more vulnerable for diseases. In addition to that, many of the cork and holm oaks are quite aged and die gradually. To avoid the death of the dehesa, it needs to be continually reforested. On the foundation owned farm, several reforestation projects have been and are being realized to assure the continuity of the dehesa. Apart from the traditional reforestation by planting saplings, the foundation also applies the technique of natural regeneration using the Eurasian jay as a “planter”. In order to mitigate the advancing erosion, alternative species of trees and bushes are planted.