Xeromesophytic broad-leaved forest communities of the Republic of Tatarstan in the hierarchy of syntaxa within the Braun-Blanquet system

Abstract

The paper is devoted to the development of an algorithm for classification of plant communities of the Republic of Tatarstan in the Braun-Blanquet system. The steppe oak forests – the unique ecotone communities, which are the reserves of many protected plant species – have been used as the model object to create the above-mentioned algorithm. The algorithm for initial determination of vegetation syntaxa based on the modified TWINSPAN method has been proposed. A total of 183 relevés from the FLORA Information and Analytical System have served as the initial data. As a result of the research, three associations belonging to two alliances of the class Quercetea pubescentis Doing-Kraft ex Scamoni et Passarge 1959 that are distributed within the territory of the Republic of Tatarstan have been preliminarily identified.

Keywords

• braun-blanquet classification
• steppe oak forests
• twinspan
• flora information and analytical system
• republic of tatarstan
• quercetea pubescentis