Dynamics of spatial population structure and coastal stands structure in places of beaver river (Castor fiber L.) settlement on small rivers of Samara area

Dynamics of spatial population structure of beaver (Castor fiber L.) is investigated. On the basis of its analysis state of the species population groupings in the small rivers Samara, Bolshoy Kinel' and Malyy Kinel' in the Samara area is determined. For the beaver settlements sufficiency of wood fodder is evaluated and food preferences are determined. In the investigated area in addition to various species of willow (Salix) beavers eat white poplar (Populus alba L.), black poplar (Populus nigra L.), maple ash (Acer negundo L.), robur oak (Quercus robur L.), black alder (Alnus glutinosa L.), european white elm (Ulmus laevis Pall.), maple tatarian (Acer tataricum L.).