Turkey is home to more Quercus species than any other country in the western Palaearctic. To what extent is the taxonomic diversity reflected in compositional diversity of oak woodland vegetation? What are the main compositional gradients, their environmental correlates and associated gradients in species traits? How are the oak woodland types in Turkey distributed? What is their stand structure, ecological range, conservation value and how are they used? Which phytosociological syntaxa are represented? What gaps remain in knowledge of Turkey's oak woodlands that require further study?