Holarctic Marmots as a factor of Biodiversity.
Rumiantsev V.Yu;, Nikol'skii A.A. & Brandler O.V. eds.,
Abstracts, 3d Conference on Marmots (Cheboksary, Russia, 25-30 August 1997),
Moscow ABF 1997, 216p. : 189.


G.A. Savchenko, V.I. Ronkin

Kharkov State University, Kharkov, Ukraine

Observations were carried out on the territory of a stationary site near village Nesterivka, Kharkov region in summer 1996 and in spring 1997. Methods of capture, tagging and observations were described in previous publications (Savchenko, Ronkin, 1996, 1997). The results of the observations were entered into the computer data base and processed using the ELLIPS program (figs. 1, 3, 4), developed by A.T. Teryokhin, V.Yu. Rumyantsev and A.A. Nikolski, as well as the program package CorelCHART 4.0 (fig. 2). A 95% probability was given for all the ellipses.

Fig. 1 illustrates the boundaries of an individual home range of a solitary adult female N1 (August,1996). The activity center is located in a 70x70 m square with a permanent burrow where the animal spends about 50% of its time. This is shown in fig.2 where the height of the prism in the 70x70 m square corresponds to 208 observation minutes, 176 minutes of which the animal spent lying on the ground near its burrow. The area of the individual home range was 0.45 ha.

The one of the observed social groups consisted in August 1996 of an adult female (6f2) and two adult males (6m11 and 6m14). The individual range boundaries of these animals are shown in fig.3. The permanent burrow in figs. 3 and 4 is located in a 150 m x 70 m square. The areas of the individual home ranges are: 6f2=0.70 ha, 6m11=1.00 ha, 6m14=0.83 ha. The activity centers of the adult males are located at a maximum distance between them. The composition of this social group in Mai 1997 was as follows: an adult male (6m14=7m14), two subadult animals and an adult female (6f2=7f2). The individual range boundaries of this female are shown in fig. 4. The activity center marked with a circle is located in a 130 m x 90 m square, the area individual home range within this observation period equalled 1.46 ha.

Figures 1-4

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