Beaver surveys will be held in Polistovsky Reserve
On the 17th of October, a meeting on beaver surveys planned for 2019 was held in Polistovsky Reserve. In the course of the survey, beavers settlements will be counted, as well as the number of individuals and their territorial distribution within the Reserve and its buffer zone.
The meeting was attended by employees of the department of territory protection, scientific department and zoologist from Velikie Luki Agricultural Academy, PhD, Nikolai Korablev. Earlier, Nikolai was involved in organizing beaver surveys in Central Forest Biosphere Reserve. At the meeting, he spoke about beaver biology, methods of conducting surveys and expected results.
In Polistovsky Reserve it is supposed to apply the statistical method of accounting. Accounting routes are laid in the places of the most probable beaver settlement - near the rivers, streams, canals. Coordinates of residential beaver settlements (burrows and huts), active dams, cut trees, exits, fresh traces are recorded. The boundaries of the settlements are determined by a neutral site with a length of at least 200 m, where there are no beaver buildings, trails, traces. To determine the number of beavers, the number of settlements is multiplied by 4 — the average number of individuals in the settlement.
The collected information will be processed using GIS programs and placed on the Reserve and buffer zone map. As a result, it is planned to get an overall picture of the beaver's distribution in Polistovsky.
photo by Larisa Avdoshina
The best time for carrying out accounting work is October - first decade of November, and the end of April - first decade of May. This fall, a training accountings will be held at Polistovsky Reserve to prepare for more extensive work in 2019.
The beaver is the largest rodent in Eurasia, adapted to semi-aquatic life. Beavers actively transform the landscape: they gnaw trees, shrubs, dig canals, burrows, build huts and dams.
The beaver has been an important commercial animal for thousands of years. They were hunted for meat, skin and castoreum. In Pskov region, it was exterminated in the XVIII century, reintroduced in 1951-1952, the beavers were brought for release from Belarus and the Voronezh region.