Zapovednik Prisursky, in Alatyrsky District of Republic Chuvashia, was established in
1995. Its area is 9,0 thousand ha and it has many lakes.
The plant cover is pine and spruce forests with an admixture of birch, which are well
preserved. There are peat bogs with cranberry. A rare wetland species is the caltrop.
The fauna is typically forest, including the moose, wild boar, blue hare; beaver
colonies occur. The Zapovednik proved habitat to the desman, a species listed in the Red
Data Books of the UICH and the Russian Federation.
The common avian species are the capercaillie and black grouse. There occur some avian
species that are rare in Chuvashia, including the black tern, white-winged black tern,
common tern, little tern, little ringed plover, etc. Seasonal aggregations of waterfowl
are characteristic (lake Chernoye). During the breeding period the osprey and imperial
eagle occur – these species are listed in the Red Book of the Russian Federation.
