In the northeast lies the typical steppe grassland zone of the Dobrudja, merging into the wooded steppe of the Danubian tableland. Most trees in this area have been cut down to make room for cultivated land. The Balkan Mountains are covered by broadleaf forests at lower altitudes and by needle-leaf conifers at higher elevations. The vegetation of the Thracian Plain is a mixture of the middle-latitude forest of the north and Mediterranean flora. Deforestation has reduced the amount of wildlife, which includes bears, foxes, squirrels, elks, wildcats, and rodents of various types. Fish resources in the Black Sea are not extensive.