TY JOUR TI THE DISTINCTION OF STRUCTURE OF THE LARCH LICHEN COMMUNITIES IN THE VALLEY LIGHT FORESTS AND FORESTS OF THE WEST SIBERIAN PLAIN KW species diversity KW species frequency KW coverage KW lichen KW West Siberian plain JO Bulletin of KSAU AU Ryabitseva, N.Y. PY 2015 IS PB Krasnoyarsk State Agrarian University