The structure of Microtus gregalis colonies was studied in different parts of the species range in Western Siberia, both in the south (Omsk oblast) and in the north (Yamalo-Nenets Autonomous Area), in 1999 and 2000. The colonies studied in the steppe zone of Omsk oblast, southern tundras of the Yamal Peninsula, and mountain tundras on the northern slopes of the Polar Urals prove to have some common structural features. In Omsk oblast, seasonal variation in the area of colonies and the number of entrances to the burrows was revealed, although the general structure of colonies (the pattern of tunnels and location of the nest and storage chambers) was largely the same in spring and autumn.
Russian Journal of Ecology – Springer Journals
Published: Oct 7, 2004
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