| bibliography |  Zagorodniuk, I. 2023. Oleksandr Vikyrchak, a  zoologist, traveller, and expert in the nature of Podillia and Transnistria. Novitates Theriologicae, 
                          16: 240–242. http://doi.org/10.53452/nt1650
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                          | abstract | An essay about a  colleague whose scientific activity is primarily related to the study of  mammals of Central Podillia and the Dnister Canyon. The researcher’s attention  is focused on studying different groups: troglophilic bats and rodents,  hydrophilic animals (beavers, water shrews), steppe fauna (wild rabbits, hillok  mice). In addition to mammalogical research, he pays considerable attention to  the study and protection of the caves of Podillia and the Dnister Canyon, the  creation of new protected areas and objects, and the organisation of regional  conferences. As the head of the scientific department of the Dnister Canyon  National Park, he is a key author of the Chronicle of Nature of the park. | 
                         
                          | references | Vikyrchak, O. K., I. V. Zagorodniuk. 2010.  New records of rare mammal  species in the territory of Chernivtsi region. In: Skilsky, I. V., Smirnov, N. A. (eds). Problems  of Studying and Protection of Natural and Transformed Ecosystems. Proceedings of International  Scientific Conference (Chernivtsi,  13 November 2009). DrukArt Press, Chernivtsi, 152–156. [In Ukrainian]Vikyrchak, O. K., P. M.  Ploshchansky. 2017. European beaver (Castor fiber) in the Dnister Canyon National  Nature Park. In: Scientific principles of  nature protection management of ecosystems of Canyon Transnistria.  Proceedings of the II International Conf. Druk Art, Chernivtsi, 103–105.
 Vikyrchak,  O. 2018.Results of censuses of  troglophyle bat species in the Middle Dnister Region (Ukraine) in 1984–2000. Theriologia Ukrainica, 16: 17–24. [In Ukrainian] https://doi.org/10.15407/pts2018.16.017
 Vikyrchak, A., A. Bachynskyi. 2019.  Experience and results of acclimatization of the European rabbit (Oryctolagus  cuniculus) in Ternopil region in 1976–1980. Theriologia  Ukrainica, 17: 88–91. http://doi.org/10.15407/pts2019.17.088
 Vikyrchak, O. 2020. The mound-building  mouse (Mus spicilegus) in Western Podillia: expansion on the left bank of the  Dnister. Theriologia Ukrainica, 20: 73–78. http://doi.org/10.15407/TU2010
 Vikyrchak, O., P. Ploshchansky.  2020. Finds of the fat dormouse (Glis glis) in cave-type shelters in the Middle  Dnister Region. Theriologia Ukrainica, 19: 96–102. http://doi.org/10.15407/TU1910
 Vikyrchak,  O., P. Ploschansky, A.Bachynsky.  2020. Results of bat censuses (Chiroptera) in winter (2019) in key underground  shelters of the south of Ternopil region (Ukraine). Scientific Principles of Environmental Management of Transdnistrian Canyon  Ecosystems. Proceedings of the Third International Conference.  VIC "City, Chernivtsi, 168–172. [In Ukrainian]
 Vikyrchak, O., P. Ploschansky, A. Bachynsky,  T. Mykytiuk. 2021. Composition of winter aggregations of bats (Chiroptera)  in cave-type shelters in the Middle Dnister region (census of 2021). Theriologia Ukrainica, 22: 111–124. [In Ukrainian] http://doi.org/10.15407/TU2212
 Vikyrchak, O. 2022. The Eurasian water shrew (Neomys fodiens) in the  Dnister Canyon National Nature Park. Novitates Theriologicae, 13: 37–42. http://doi.org/10.53452/nt1321
 Vikyrchak, O. 2023. The modern mammal fauna of the  left bank of Canyon Transnistria. Theriologia Ukrainica, 26: 3–28. http://doi.org/10.53452/TU2603
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