Creating hyssop phytocenoses in anthropogenically transformed ecosystems Petro Dobrovolskyi, Larysa Andriichenko, Tetiana Kachanova and Tetiana Manushkina E3S Web Conf., 255 (2021) 01009 Published online: 03 May 2021 DOI: 10.1051/e3sconf/202125501009