Oak forests of the class Quercetea pubescentis in Central-Eastern Ukraine

The article is devoted to the phytosociological study and vegetation classification of the dry-mesic oak forests in the central and eastern regions of Ukraine. We showed that oak for­ests of the Quercetea pubescentis class have specific northern features in the region and their syntaxonomic position at the level of alliances was not assigned. Syntaxa formed three dis­tinct geographical groups eastward from the Dnieper lowland to the Middle Russian Upland. Ordination, phytoindication, and comparative floristic analysis with other syntaxa from adjacent regions were performed. New associations (Digitali grandiflo­rae-Quercetum roboris ass. nova and Carici praecocis-Querce­tum roboris ass. nova) were reported. Two edaphic subtypes of dry-mesic oak forests (terrace and ravine oak forests) were distin­guished and their floristic features were discussed.

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