DISTRIBUTION AND DYNAMIC OF CASTOR FIBER (CASTORIDAE, MAMMALIA) POPULATION IN FOREST-STEPPE RIVERS: A CASE OF THE STATE NATURE RESERVE PRIVOLZHSKAYA LESOSTEP’, PENZA REGION, EUROPEAN RUSSIA
Journal Title: Nature Conservation Research. Заповедная наука - Year 2018, Vol 3, Issue 0
Abstract
The work presents the first results of annual monitoring of a beaver population on the territory of Ostrovtsovskaya Lesostep' (State Nature Reserve Privolzhskaya Lesostep', Penza region). In 2014–2017 all water-courses and water-bodies, including the River Khoper, River Selimutka, River Yuzhnaya and several oxbows of the Khoper were investigated twice a year for assessing the beaver abundance using the method of settlements capacity. The mean density of dams was 7.7 dams/km of watercourse, the maximum was on the River Yuzhnaya – 10.8 dams/km, and the minimum was on the River Selimutka – 5.5 dams/km. During the study period 10 to 13 beaver settlements were observed, the total abundance of beavers tends to decrease (from 42 to 30 animals). The present density of beavers and a lack of food resources limit a further increase of the species abundance.
Authors and Affiliations
Ivan V. Bashinskiy, Vitaly V. Osipov
Keywords
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- EP ID EP493129
- DOI 10.24189/ncr.2018.068
- Views 94
- Downloads 0
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