V. F. Sazonov – Ph.D. (Biol.), Associate Professor, Department of Biology and Its Teaching Methods, Ryazan State University named after S.A. Esenin (Ryazan, Russia)

E-mail: kineziolog@mail.ru

I. V. Sazonov – Director, “Tri-W” Ltd. (Ryazan, Russia)

E-mail: mail@3w-site.ru

A. V. Grishaev – Post-graduate Student, Department of Ecology and Resource Using, Ryazan State University named after S.A. Esenin (Ryazan, Russia)

E-mail: ecology.ag@yandex.ru