Is new spread of the European beaver in Pannonian basin an evidence of the species recovery?

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Alexander Čanády
Peter Krišovský
Bálint Bajomi
Attila Huber
David Czaban
Milan Olekšák


Abstract: During fieldwork from 6 June to 20 July 2016, the first records of the European beaver (Castor fiber) in south-eastern Slovakia were made. Beavers are mainly nocturnal animals, and as such, they are rarely observed; therefore, our observations were based on searching for beaver presence signs: damaged trees, dams, signs of food consumption (chewed/felled trees) and footprints in the mud. The southern part of the Košická kotlina basin, from the city of Košice down to the state border and the surrounding villages in Hungary, was checked. We found two beaver locations via feeding signs in the vicinity of the Slovakia–Hungary state border, at the villages of Milhosť (Miglécnémeti) and Buzica (Buzita), in Slovakia. According to our calculations, the present total beaver population in Hungary is between 4,000 and 5,000 and 14,600–18,300 beavers with potential support. For Slovakia, we estimated the potential population size to be 7,700–9,600. Our findings in northern Pannonian lowland (Slovakia–Hungary border) are an important evidence of beaver expansion. Although we don’t know the exact origin of investigated population, these new records indicate the possibility of merging the populations of different origin, which could enable gene flow and increase the genetic diversity. This could lead to improved recovery of species and its stabilisation in nature. However, it is necessary to carry out a detailed investigation of the presence of beaver in these regions in future.

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Čanády, A., Krišovský, P., Bajomi, B., Huber, A., Czaban, D., & Olekšák, M. (2016). Is new spread of the European beaver in Pannonian basin an evidence of the species recovery?. European Journal of Ecology, 2(2), 44–63.


Arndt, E. & Domdei, J. (2011) Influence of beaver ponds on the macroinvertebrate
benthic community in lowland brooks. Pol. J. Ecol.,
59(4), 799–811.
Bajomi, B. (2011a) Reintroduction of the Eurasian beaver (Castor fiber)
in Hungary. Danube Parks Network of Protected Areas, Directorate
of Duna-Dráva National Park, Budapest, Hungary, 24 pp.
Bajomi, B. (2011b) Az eurázsiai hód (Castor fiber) visszatelepítésének
tapasztalatai Magyarországon. 54 pp. (in Hungarian)
Bajomi, B., Bera, M., Czabán, D. & Gruber, T. (2016) Eurasian beaver
re-introduction in Hungary. Pp. 211–215. In: Soorae PS, editor.
Global re-introduction perspectives: 2016. Case-studies from
around the globe, Publisher: IUCN/SSC Re-introduction Specialist
Group, Gland, Switzerland & Environment Agency-Abu
Dhabi, Abu-Dhabi, UAE.
Balčiauskas, L. & Ulevičius, A. (1995) Semi-aquatic mammal environment
correlates in South Lithuanian river valleys. Ekologija, 2,
Bera, M. (2007) Eurázsiaihód (Castor fiber Linnaeus, 1758). In: Bihari,
Z., Csorba, G. & Heltai, M.(eds.) Magyarország emlőseinek atlasza.
Kossuth Kiadó, Budapest, pp. 152–154. (in Hungarian)
Bera, M. & Gruber, T. (2007) Amit a hódról tudni érdemes. Az eurázsiai
hód Magyarországon – visszatelepítés, védelem és állományszabályozás.
WWF füzetek 26. Budapest. pp. 30. (in Hungarian)
Boczoń, A., Wróbel, M. & Syniaiev, V. (2009) The impact of beaver
ponds on tree stand in a river valley. J. Water Land Dev., 13,
Bozsér, O. (2001) Hódok az Óvilágban. WWF füzetek 19. WWF Magyarország,
Budapest. pp. 22. (in Hungarian)
Brehm, A. (1929) A közönséges hód (C. fiber L.), Pp. 261–270. In: Az állatok
világa. Emlősök: rágcsálók. Publisher: Gutenberg Könyvkiadóvállalat,
Budapest. (In Hungarian.)
Ciechanowski, M., Kubic, W., Rynkiewicz, A. & Zwolicki, A. (2011) Reintroduction
of beavers Castor fiber may improve habitat quality
for vespertilionid bats foraging in small river valleys. Eur. J.
Wildl. Res., 57(4), 737–747.
Cywicka, D. & Brzuski, P. (2008) Changes made in the retention of
wateron mountain rivers and streams by beavers. Studia i
Materiały Centrum Edukacji Przyrodniczo-Leśnej, 2(18), 184–
192. (in Polish)
Czech, A. (2010) Bóbr – budowniczy i inżynier. Fundacja Wspierania Inicjatyw
Ekologicznych, Kraków. (in Polish)
Dalbeck, L., Lüscher, B. & Ohlhoff, D. (2007) Beaver ponds as habitat
of amphibian communities in a central European highland. Amphibia-
Reptilia, 28(4), 493–501.
Dyakov, J.V. (1975) Beavers of the European Part of the Soviet Union
(Morphology, Ecology, Ways and Methods of Economic Use).
Moscow. Moskovskii Rabochii. 480 pp. (in Russian).
Dzięciołowski, R. & Gozdziewski, J. (1999) The Reintroduction of European
Beaver, Castor fiber, in Poland. In: Busher & R. Dzieciolowski
(Eds.), Beaver Protection, Management, and Utilization in Europe
and North America. Kluwer Academic/Plenum Publishers,
New York, pp. 31–35.
Fustec, J., Lodé, T., LeJacques, D. & Cormier, J. P. (2001) Colonization,
riparian habitat selection and home range size in a reintroduced
population of European beavers in the Loire. Freshwater Biol.,
46(10), 1361–1371.
Giriat, D., Gorczyca, E. & Sobucki, M. (2016) Beaver ponds’ impact on
fluvial processes (Beskid Niski Mts., SE Poland). Sci. Total. Environ.,
544, 339–353.
Halley, D.J. & Rossel, F. (2002) The beaver’s reconquest of Eurasia: status,
population development and management of a conservation
success. Mammal Rev., 32, 153–178.
Halley, D.J. & Rossel, F. (2003) Population and distribution of European
beavers (Castor fiber). Lutra, 46(2), 91–101.
Halley, D.J., Rosell, F. & Saveljev, A. (2012) Population and distribution of
Eurasian beaver (Castor fiber). Balt. For., 18(1), 168–175.
Kobojek, E. (2013) The influence of beaver activity on local fluvial processes
in selected rivers on the Łowicz-Błonie Plain. Acta Universitatis
Lodziensis, Folia Geographica Physica, 12, 17–32. (in
Kukuła, K. & Bylak, A. (2010) Ichthyofauna of a mountain stream
dammed by beaver. Arch. Pol. Fish.,18(1), 33–43.
Kurstjens, G. & Bekhuis J. (2003) Adaptation of beavers (Castor fiber)
to extreme water level fluctuations and ecological implications.
Lutra, 46(2), 147-151
Manikowska-Ślepowrońska, B., Szydzik, B. & Jakubas, D. (2016) Determinants
of the presence of conflict bird and mammal species
at pond fisheries in western Poland. Aquat. Ecol., 50(1), 87–95.
Nolet, B.A. & Rosell, F. (1998) Comeback of the beaver Castor fiber: An
overview of old and new conservation problems. Biol. Conserv.
83, 165–173.
Obidziński, A., Orczewska, A. & Cieloszczyk, P. (2011) The impact of
beaversʼ (Castor fiber L.) lodges on vascular plant species diversity
in forest landscape. Pol. J. Ecol., 59(1), 63–73.
Rurek, M. (2013) Lokalne zmiany środowiska przyrodniczego wywołane
działalnością Bobra Europejskiego (Castor fiber L. w okolicy Trzebcin
(powiat tucholski). J. Health Sci., 3(15), 119–127. (in Polish)
Rurek, M., Krupa, A., Hojan, M. & Giętkowski, T. (2013) Wpływ
działalności bobrów na rzeźbę małych dolin na przykładzie
doliny Gajdówki, południowe Bory Tucholskie, Polska. J. Health-
Sci., 3(15), 257–266. (in Polish)
Saveljev, A. P., Stubbe, M., Stubbe, A., Unzhakov, V. V. & Kononov, S. V.
(2002) Natural movements of tagged beavers in Tyva. Russ. J.
Ecol., 33(6), 434–439.
Schwab G. & Schmidbauer M. (2003) Beaver (Castorfiber L, Castoridae)
management in Bavaria. Denisia 9, zugleich Kataloge der OÖ.
Landesmuseen Neue Serie 2, 99–106
Ståhlberg, S., Bassi, E., Viviani, V. & Apollonio, M. (2017). Quantifying
prey selection of Northern and Southern European wolves (Canis
lupus). Mamm. Biol., 83, 34–43.
Stringer A.P. & Gaywood M.J. (2016). The impacts of beavers Castor
spp. on biodiversity and the ecological basis for their reintroduction
to Scotland, UK. Mammal Rew., 46(4), 270–283.
Świȩcicka, N., Bernacka, H., Durawa, B. & Misrzak, M. (2014) The impact
of the European beaver (Castor fiber) on the environment and
economy. Acta Sci. Pol., Zootechnica, 13(2), 51–62.
Ulevičius, A. & Balčiauskas, L. (1995) Ecology of semi–aquatic mammals
in some landscapes of Lithuania: abundance, community structure
and distribution. Ekologija, 2, 77–83.
Ulevičius, A. & Balčiauskas, L. (1999) Spatial relations among semiaquatic
mammals on the riverside. Acta Zool. Lit., 9(1), 42–48.
Valachovič, D. (2012) European beaver (Castor fiber). In: Krištofík, J. &
Danko, Š. (Eds.), Mammals of Slovakia: Distribution, Bionomy
and Protection. Veda–Slovak Academy of Sciences (SAS) Publishing
House, Bratislava, pp. 81–85.
Vorel, A., Šafář J. & Šimůnková, K. (2012) Recent expansion of Castorfiber
in the Czech Republic during 2002–2012 (Rodentia: Castoridae).
Lynx, n. s. (Praha), 43(1–2), 149–179 (in Czech)
Wachsmann, F. (1905) Az utolsó hód Magyarországon. Állattani Közlemények,
(4-5), 235–236. (in Hungarian)
Żurowski, W. (1992) Building activity of beavers. ActaTheriol., 37(4),