1. Educational and Scientific Center ‘Institute of Biology and Medicine’ of Taras Shevchenko National University of Kyiv , Department of Plant Biology , Kyiv , Ukraine
2. National University of Life and Environmental Sciences of Ukraine , Department of Forest Restoration and Meliorations , Kyiv , Ukraine
3. Kyiv State Administration, Department of Ecology and Natural Resources , Kyiv , Ukraine
4. State Agency of Forest Resources of Ukraine , State Enterprise ‘Vyshche-Dubechnia Forestry’ , Pirnovo , Ukraine