Ivan V. Seryodkin, PhD, Leading Researcher of the Pacific Geographical Institute of FEB RAS (690041, Russia, Vladivostok, Radio Street, 7); iD ORCID:; e-mail:
John Paczkowski, Park Ecologist of the Alberta Environment and Parks (Canada, Canmore, Suite 201, Railway Avenue, 800); e-mail:
John M. Goodrich, PhD, Chief Scientist of the Panthera Foundation (USA, 10018, New York, West 40 th Street, 8); e-mail:
Yuri K. Petrunenko, Researcher of the Pacific Geographical Institute of FEB RAS (690041, Russia, Vladivostok, Radio Street, 7); iD ORCID: ; e-mail:

Reference to article

Seryodkin I.V., Paczkowski J., Goodrich J.M., Petrunenko Yu.K. 2021. Locations of dens with respect to space use, pre- and post-denning movements of brown bears in the Russian Far East. Nature Conservation Research 6(3): 97–109.

Electronic Supplement. The version of the paper «Locations of dens with respect to space use, pre- and post-denning movements of brown bears in the Russian Far East» presented in Russian (Link).

Section Research articles

Space use and the use of a den during the winter period as an adaptation of the brown bear (Ursus arctos) to increase survival during a period of food shortage, are important aspects of the ecology in the practice of the population management. Despite this, the subject of the den locations in relation to space use of brown bears and movements associated with a den entry and exit were practically not considered by researchers. Using radio-telemetry methods between 1993–2012, we studied the space use of 15 brown bears in Sikhote-Alin, three in Kamchatka and two on Sakhalin. The location of 25 dens of tagged animals was determined. The majority of brown bears, mostly males, used space further from the den than from the average of all locations, and the overwhelming majority of dens were outside the core area of their home ranges. So, for brown bears, the spatial location of dens was away from preferred locations in the non-denning period. The same brown bears selected den sites in different denning seasons, both at relatively small distance from each other (1.3 km) and at a considerable distance (20.2 km). Females on Sakhalin moved to dens 7–9 days before the den entry. After leaving their dens, two females in Kamchatka moved 1.7 and 5.0 km on the first day, while on Sakhalin, two females did not move more than 0.1 km from their dens for the first 4 and 10 days. Female that gave birth to cubs in the denning period lingered the longest at the den. The distance of females from their dens and their movement activity decreased in the pre-denning period (10 days before denning, the variations in movement stabilised at a low level) and increased in the post-denning period (specifically after 10 days from the moment of emergence).


daily movements, denning location, home range, population management, spatial ecology, Ursus arctos

Artice information

Received: 12.12.2020. Revised: 18.02.2021. Accepted: 30.03.2021.

The full text of the article

Abramov V.K. 1972. Migrations of bears in the south of the Far East of the USSR. In: Ecology, morphology, protection and use of bears. Moscow: Nauka. P. 6–8. [In Russian]
Brown G. 1993. The Great Bear Almanac. New York: Lyons and Burford. 325 p.
Camarra J.J. 1997. Caractéristiques et utilisation de tanières hivernales d'ours brun (Ursus arctos) dans les Pyrénées. Gibier Faune Sauvage 4: 391–405.
Chernyavskiy F.B., Krechmar A.V., Krechmar M.A. 1993. The brown bear. The North of the Far East. In: Bears: brown bear, polar bear, Asian black bear. Moscow: Nauka. P. 318–348. [In Russian]
Craighead F.C. 1976. Grizzly bear ranges and movement as determined by radiotracking. International Conference on Bear Research and Management 3: 97–109. DOI: 10.2307/3872759
Craighead F.C., Craighead J.J. 1972a. Data on grizzly bear denning activities and behavior obtained by using wildlife telemetry. International Conference on Bear Research and Management 2: 84–106. DOI: 10.2307/3872573
Craighead F.C., Craighead J.J. 1972b. Grizzly bear prehibernation and denning activities as determined by radiotracking. Wildlife Mongraphs 32: 3–35.
Dahle B., Swenson J.E. 2003. Home ranges in adult Scandinavian brown bears (Ursus arctos): effect of mass, sex, reproductive category, population density and habitat type. Journal of Zoology 260(4): 329–335. DOI: 10.1017/S0952836903003753
Danilov P.I. 1991. Brown bear dens in the USSR. In: Bears of the USSR, State of Populations. Rzhev: Rzhev Press. P. 56–70. [In Russian]
Elfström M., Swenson J.E. 2009. Effects of sex and age on den site use by Scandinavian brown bears. Ursus 20(2): 85–93.
Elfström M., Swenson J.E., Ball J.P. 2008. Selection of denning habitats by Scandinavian brown bears Ursus arctos. Wildlife Biology 14(2): 176–187. DOI: 10.2981/0909-6396(2008)14[176:SODHBS]2.0.CO;2
Evans A.L., Singh N.J., Friebe A., Arnemo J.M., Laske T.G., Fröbert O., Swenson J.E., Blanc S. 2016. Drivers of hibernation in the brown bear. Frontiers in Zoology 13: 7. DOI: 10.1186/s12983-016-0140-6
Friebe A., Swenson J.E., Sandegren F. 2001. Denning chronology of female brown bears in central Sweden. Ursus 12: 37–45.
Goldstein M.I., Poe A.J., Suring L.H., Nielson R.M., McDonald T.L. 2010. Brown bear den habitat and winter recreation in South-Central Alaska. Journal of Wildlife Management 74(1): 35–42. DOI: 10.2193/2008-490
Haroldson M.A., Ternent M.A., Gunther K.A., Schwartz C.C. 2002. Grizzly bear denning chronology and movements in the Greater Yellowstone Ecosystem. Ursus 13: 29–37.
Hissa R. 1997. Physiology of the European brown bear (Ursus arctos arctos). Annales Zoologici Fennici 34(4): 267–287.
Huber D., Roth H.U. 1997. Denning of brown bears in Croatia. International Conference on Bear Research and Management 9(2): 79–83. DOI: 10.2307/3872664
Iosif R., Pop M.I., Chiriac S., Sandu R.M., Berde L., Szabó S., Rozylowicz L., Popescu V.D. 2020. Den structure and selection of denning habitat by brown bears in the Romanian Carpathians. Ursus 31e5: 1–13. DOI: 10.2192/URSUS-D-18-00010.1
Jonkel J.J. 1993. A manual for handling bears for managers and researchers. Bozeman, USA: U.S. Fish and Wildlife Service. 175 p.
Klevezal G.A. 1988. The recording structures of mammals in zoological studies. Moscow: Nauka. 288 p. [In Russian]
Kostoglod V.E. 1979. Surveys of bears at movements to wintering places in the Middle Sikhote-Alin. In: Ecological basis for conservation and sustainable use of carnivorous mammals. Moscow: Nauka. P. 224–225. [In Russian]
Kreeger T.J. 1996. Handbook of wildlife chemical immobilization. Wyoming: International Wildlife Veterinary Sciences, Inc. 342 p.
Krofel M., Špacapan M., Jerina K. 2017. Winter sleep with room service: denning behaviour of brown bears with access to anthropogenic food. Journal of Zoology 302(1): 8–14. DOI: 10.1111/jzo.12421
Kruskal W.H., Wallis W.A. 1952. Use of ranks in one-criterion variance analysis. Journal of the American Statistical Association 47(260): 583–621. DOI: 10.1080/01621459.1952.10483441
Kucherenko S.P. 1983. Ecology and hunting of the brown bear in the Far East. In: Ecology and Hunting Game. Moscow: Nauka. P. 123–131. [In Russian]
Lindzey F.G., Meslow E.C. 1976. Winter dormancy in black bears in southwestern Washington. Journal of Wildlife Management 40(3): 408–415. DOI: 10.2307/3799942
Manchi S., Swenson J.E. 2005. Denning behaviour of Scandinavian brown bears Ursus arctos. Wildlife Biology 11(2): 123–132. DOI: 10.2981/0909-6396(2005)11[123:DBOSBB]2.0.CO;2
Mangipane L.S., Belant J.L., Gustine D.D., Hilderbrand G.V., Mangipane B.A. 2018. Sex-specific variation in denning by brown bears. Mammalian Biology 93: 38–44. DOI: 10.1016/j.mambio.2018.08.001
Mano T. 1994. Home range and habitat use of brown bears in the southwestern Oshima Peninsula, Hokkaido. International Conference on Bear Research and Management 9(1): 319–325. DOI: 10.2307/3872717
McLoughlin P.D., Case R.L., Gau R.J., Ferguson S.H., Messier F. 1999. Annual and Seasonal Movement Patterns of Barren-Ground Grizzly Bears in the Central Northwest Territories. Ursus 11: 79–86.
Petram W., Knauer F., Kaczensky P. 2004. Human influence on the choice of winter dens by European brown bears in Slovenia. Biological Conservation 119(1): 129–136. DOI: 10.1016/j.biocon.2003.07.021
Pimenova E.A. (Ed.). 2016. Plants, fungi and lichens of the Sikhote-Alin State Nature Reserve. Vladivostok: Dalnauka. 557 p. [In Russian]
Popescu V.D., Iosif R., Pop M.I., Chiriac S., Bouroș G., Furnas B.J. 2017. Integrating sign surveys and telemetry data for estimating brown bear (Ursus arctos) density in the Romanian Carpathians. Ecology and Evolution 7(18): 7134–7144. DOI: 10.1002/ece3.3177
Powell R.A. 2000. Animal home ranges and territories and home range estimators. In: Research techniques in animal ecology: controversies and consequences. Irvington, New York: Columbia University Press. P. 65–110.
R Core Team. 2020. R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing. Available from:
Revenko I.A. 1993. The brown bear. Kamchatka. In: Bears: brown bear, polar bear, Asian black bear. Moscow: Nauka. P. 380–403. [In Russian]
Rigg R. 2005. A review of studies on brown bear (Ursus arctos) ecology in relation to home range, habitat selection, activity patterns, social organization, life histories and population dynamics. Oecologia Montana 14(1–2): 47–59.
Sahlén E., Støen O.G., Swenson J.E. 2011. Brown bear den site concealment in relation to human activity in Sweden. Ursus 22(2): 152–158. DOI: 10.2192/URSUS-D-10-00007.1
Servheen C., Klaver R. 1983. Grizzly bear dens and denning activity in the Mission and Rattlesnake Mountains, Montana. International Conference on Bear Research and Management 5: 201–207. DOI: 10.2307/3872539
Seryodkin I.V., Paczkowski J. 2006. Capture, immobilization and marking of brown bears in Kamchatka. In: Conservation of biodiversity of Kamchatka and coastal waters. Petropavlovsk-Kamchatsky: Kamchatpress. P. 203–206. [In Russian]
Seryodkin I.V., Paczkowski J. 2009. Program to study brown bears on Kamchatka with the goal of conservation. Proceedings of Samara Scientific Centre of RAS 11(1–2): 158–161. [In Russian]
Seryodkin I.V., Kostyria A.V., Goodrich J.M., Miquelle D.G., Smirnov E.N., Kerley L.L., Quigley H.B., Hornocker M.G. 2003. Denning ecology of brown bears and Asiatic black bears in the Russian Far East. Ursus 14(2): 153–161. DOI: 10.2307/3873015
Seryodkin I.V., Kostyrya A.V., Goodrich J.M., Schleyer B.O., Miquelle D.G., Kerley L.L., Quigley K.S., Quigley H.B. 2005. Capture and immobilization of Asiatic black and brown bears for radio marking. Zoologicheskii Zhurnal 84(12): 1508–1515. [In Russian]
Seryodkin I.V., Lisitsyn D.V., Borisov M.Yu. 2012. Study of brown bear at Sakhalin. Proceedings of Samara Scientific Centre of RAS 14(1–8): 1925–1928. [In Russian]
Seryodkin I.V., Kostyria A.V., Goodrich J.M., Miquelle D.G. 2013. Daily activity patterns of brown bear (Ursus arctos) of the Sikhote-Alin Mountain Range (Primorskiy Krai, Russia). Russian Journal of Ecology 44(1): 50–55. DOI: 10.1134/S1067413613010104
Seryodkin I.V., Kostyria A.V., Goodrich J.M. 2014. Daily and seasonal movements of brown bear in the Sikhote-Alin. Herald of Tver State University. Series: Biology and Ecology 4: 233–240. [In Russian]
Seryodkin I.V., Paczkowski J., Borisov M.Y., Petrunenko Y.K. 2017. Home ranges of brown bears on the Kamchatka peninsula and Sakhalin Island. Contemporary Problems of Ecology 10(6): 599–611. DOI: 10.1134/S1995425517060129
Seryodkin I.V., Miquelle D.G., Goodrich J.M., Kostyria A.V., Petrunenko Y.K. 2018a. Interspecific relationships between the Amur tiger (Panthera tigris altaica) and brown (Ursus arctos) and Asiatic black (Ursus thibetanus) bears. Biology Bulletin 45(8): 853–864. DOI: 10.1134/S1062359018080149
Seryodkin I.V., Zhakov V.V., Paczkowski J. 2018b. Brown bear (Ursus arctos) (Carnivora, Mammalia) dens of the Kronotsky Nature Reserve. Povolzhskiy Journal of Ecology 1: 101–105. DOI: 10.18500/1684-7318-2018-1-101-105
Seryodkin I.V., Kostyria A.V., Goodrich J.M., Petrunenko Y.K. 2019. Space use by brown bears (Ursus arctos) in the Sikhote-Alin. Journal of Siberian Federal University. Biology 12(4): 366–384. DOI: 10.17516/1997-1389-0308 [In Russian]
Tietje W.D., Ruff R.L. 1980. Denning behavior of black bears in boreal forest of Alberta. Journal of Wildlife Management 44(4): 858–870. DOI: 10.2307/3808314
Todorov V.R., Zlatanova D.P., Valchinkova K.V. 2020. Home range, mobility and hibernation of brown bears (Ursus arctos, Ursidae) in areas with supplementary feeding. Nature Conservation Research 5(4): 1–15. DOI: 10.24189/ncr.2020.050
Tolmachev A.I. 1955. Geobotanical zoning of Sakhalin Island. Moscow, St. Petersburg: AS USSR. 78 p. [In Russian]
Van Daele L.J., Barnes V.G., Smith R.B. 1990. Denning characteristics of brown bears on Kodiak Island, Alaska. International Conference on Bear Research and Management 8: 257–267.
Van Winkle W. 1975. Comparison of Several Probabilistic Home-Range Models. Journal of Wildlife Management 39(1): 118–123. DOI: 10.2307/3800474
Vroom G.W., Herrero S., Ogilvie R.T. 1980. The ecology of winter den sites of grizzly bears in Banff National Park, Alberta. International Conference on Bear Research and Management 4: 321–330. DOI: 10.2307/3872887
Worton B.J. 1989. Kernel methods for estimating the utilization distribution in home-range studies. Ecology 70(1): 164–168. DOI: 10.2307/1938423
Yudin V.G. 1993. The brown bear. The South of the Far East. In: Bears: brown bear, polar bear, Asian black bear. Moscow: Nauka. P. 348–380. [In Russian]
Zavatskiy B.P. 1987. Den entry dates and bear den types in the Yenisei taiga. In: Bear Ecology. Novosibirsk: Nauka. P. 84–91. [In Russian]