The Conference is organized by the Faculty of Biology of Ivan Franko National University of Lviv, Institute of Biology and Earth Sciences, Pomeranian University in Slupsk (Poland), M.G. Kholodny Institute of Botany of the National Academy of Sciences of Ukraine, Institute of Biological Sciences and Botanical Garden of the Maria Curie-Skłodowska University in Lublin (Poland), and Faculty of Environmental Biology of the University of Life Sciences in Lublin (Poland).