Denisov Anton Alexandrovich RussiaSaratov State University , 83, Astrakhanskaya str., Saratov, 410012, Russia лаборант отдела биологии и экологии растений УНЦ «Ботанический сад»boss.nhg@gmail.com Author's articles Ecological features of plant communities containing Globularia bisnagarica L. in the Middle and Lower Volga Region Dynamics of the demographic structure and variability of some morphological parameters of Calophaca wolgarica (Fabaceae) during reintroduction to the Saratov region