Abstract
Habitat selectivity by European beaver (Castor fiber L., 1758) was studied in 226 km of river channels during their colonization of the Morava River basin (the Czech Republic), which had not been occupied by beavers for hundreds of years. The colonization started after initial reintroductions in 1991 and 1992. Annual increases in colonization of the river system from 1995 to 2007 were 15.5 ± 9.4 SD km year−1 and varied greatly between these years (min 0 km, max 33 km). Beavers appeared to be following a dispersal pattern, in which distant sites are often colonized before close-by sites. The selection of habitat variables during the colonization process varied. In the early phase of colonization, there were many areas with optimal habitat that were not occupied by beavers, and habitat selection appeared chaotic. After this early phase, the most significant habitat variable related to beaver occupation was shown to be the presence of willow (Salix spp.) species. In the later phases, the beaver population expanded into suboptimal habitat. Settlement distance from roads, railways, and urbanized areas became less. When comparing the generalized linear models, a model from the winter of 2003/2004 had the best overall accuracy and showed excellent agreement among observed and fitted values (Cohen’s κ = 0.75). The model suggests that beavers established their home ranges at first in optimal habitat, which had not been occupied before and then subsequently in suboptimal/marginal areas.
Similar content being viewed by others
References
Aleksiuk M (1968) Scent-mound communication, territoriality, and population regulation in beaver (Castor canadensis Kuhl). J Mammal 49:759–762
Baker S, Fraser D, Kostkan V (2006) A modified method for appraising the suitability of urban sites in Great Britain, for use by the Eurasian (European) beaver (Castor fiber). J Practical Ecol Conservat 5:22–37
Barnes DM, Mallik AU (1997) Habitat factors influencing beaver dam establishment in a northern Ontario watershed. J Wildl Manage 61:1371–1377
Beer JR (1955) Movements of tagged beaver. J Wildl Manage 19:492–493
Beier P, Barrett RH (1987) Beaver habitat use and impact in the Truckee Basin, California. J Wildl Manage 51:794–799
Broschart MR, Johnston CA, Naiman RJ (1989) Predicting beaver colony density in boreal landscapes. J Wildl Manage 53:929–934
Calenge C (2006) The package “adehabitat” for the R software: a tool for the analysis of space and habitat use by animals. Ecol Model 197:516–519
Calenge C, Dufour A, Maillard D (2005) K-select analysis: a new method to analyse habitat selection in radio-tracking studies. Ecol Model 186:143–153
Campbell RD, Rosell F, Nolet BA, Dijkstra VAA (2005) Territory and group sizes in Eurasian beavers (Castor fiber): echoes of settlement and reproduction? Behav Ecol Sociobiol 58:597–607
Cohen J (1960) A coefficient of agreement for nominal scales. Educ Psychol Meas 20:37–46
Dieter CD, McCabe TP (1989) Factors influencing beaver lodge-site selection on a Prairie River. Am Mid Nat 122:408–411
Fryxell JM (2001) Habitat suitability and source–sink dynamics of beavers. J Anim Ecol 70:310–316
Fustec J, Lode T, Le Jacques D, Cormier JP (2001) Colonization, riparian habitat selection and home range size in a reintroduced population of European beavers in the Loire. Freshwat Biol 46:1361–1371
Fustec J, Cormier JP, Lodé T (2003) Beaver lodge location on the upstream Loire River. CR Biol 326:192–199
Harrell FE (2007) Design: design package. R package version 2.1-1. Available via http://www.R-project.org
Hartman G (1994) Long-term population development of a reintroduced beaver (Castor fiber) population in Sweden. Conserv Biol 8:713–717
Hartman G (1995) Patterns of spread of a reintroduced beaver Castor fiber population in Sweden. Wildl Biol 1:97–103
Hartman G (1996) Habitat selection by European beaver (Castor fiber) colonizing a boreal landscape. J Zool 240:317–325
Hartman G (1997) Notes on age and dispersal of beaver (Castor fiber) in an expanding population. Can J Zool 75:959–962
Hartman G, Tornlov S (2006) Influence of watercourse depth and width on dam-building behaviour by Eurasian beaver (Castor fiber). J Zool 268:127–131
Hošek E (1966) Bobři v povodí horního toku řeky Moravy a jejích přítoků. Severní Morava 13:65–68
Howard RJ, Larson JS (1985) A stream habitat classification system for beaver. J Wildl Manage 49:19–25
Hutchinson GE (1957) Concluding remarks. Cold Spring Harbour Symp Quant Biol 22:415–427
Ihaka R, Gentleman R (1996) R: a language for data analysis and graphics. J Comput Graph Stat 5:299–314
John F (2006) Kolonizace povodí Moravy nad Olomoucí bobrem evropským (Castor fiber L.). In: Měkotová J, Štěrba O (eds), River Landscape 4. Olomouc, pp 86–95
John F (2009) Habitat selection by beavers: methodological aspects and results for a reintroduced beaver (Castor fiber L.) population in the Morava River basin. Ph.D. thesis, Palacky University, Olomouc
John F, Kostkan V (2009) Compositional analysis and GPS/GIS for study of habitat selection by the European beaver, Castor fiber in the middle reaches of the Morava River. Folia Zool 58:76–86
Kindschy RR (1985) Response of willow to beaver use in southeastern Oregon. J Wildl Manage 49:26–28
Kostkan V (2000) Ekologická nika bobra evropského (Castor fiber L. 1758) v Chráněné krajinné oblasti Litovelské Pomoraví. Ph.D. thesis, Palacky University, Olomouc
Kostkan V, Lehký J (1997) The Litovelské Pomoraví floodplain forest as a habitat for the reintroduction of the European beaver (Castor fiber) into Czech Republic. Global Ecol Biogeogr 6:307–310
Kostkan V, John F, Vávrová P (2002) Kácení dřevin bobrem evropským (Castor fiber L.) na střední Moravě. Přírodovědné studie Muzea Prostějovska 5:87–97
Landis JR, Koch GC (1977) The measurements of observer agreement for categorical data. Biometrics 33:159–174
Leege TA (1968) Natural movements of beavers in southeastern Idaho. J Wildl Manage 32:973–976
McComb WC, Sedell JR, Buchholz TD (1990) Dam-site selection by beavers in an eastern Oregon basin. Great Basin Naturalist 50:273–281
McNew L, Woolf A (2005) Dispersal and survival of juvenile beavers (Castor canadensis) in southern Illinois. The Am Mid Nat 154:217–228
Müller-Schwarze D, Sun L (2003) The beaver: natural history of a wetlands engineer. Cornell University Press, Ithaca
Nolet BA, Rosell F (1994) Territoriality and time budgets in beavers during sequential settlement. Can J Zool 72:1227–1237
Nolet BA, Rosell F (1998) Comeback of the beaver Castor fiber: an overview of old and new conservation problems. Biol Conserv 83:165–173
R Development Core Team (2007) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. http://www.R-project.org
Robel JR, Fox LB, Kemp KE (1993) Relationship between habitat suitability index values and ground counts of beaver colonies in Kansas. Wildl Soc Bul 21:415–421
Schooley RL (1994) Annual variation in habitat selection: patterns concealed by pooled data. J Wildl Manage 58:367–374
Slough BG, Sadleir RMFS (1977) A land capability classification system for beaver (Castor canadensis). Can J Zool 55:1324–1335
Sun L, Müller-Schwarze D, Schulte BA (2000) Dispersal pattern and effective population size of the beaver. Can J Zool 78:393–398
Suzuki N, McComb WC (1998) Habitat classification models for beaver (Castor canadensis) in the streams of the central Oregon coast range. Northwest Sci 72:102–110
Šafář J (2002) Novodobé rozšíření bobra evropského (Castor fiber L., 1758) v České republice. Příroda 13:161–196
Tyurnin BN (1984) Factors determining the numbers of the river beaver Castor fiber in the European north. Soviet Journal of Ecology 14:337–344
Zurowski W, Kasperczyk B (1990) Results of beaver reintroduction in some Carpathian mountain streams. Ochr Przyr 47:201–213
Acknowledgments
This study was supported by the Universities Development Foundation (FRVS G4 53/2004).
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by H. Kierdorf
Rights and permissions
About this article
Cite this article
John, F., Baker, S. & Kostkan, V. Habitat selection of an expanding beaver (Castor fiber) population in central and upper Morava River basin. Eur J Wildl Res 56, 663–671 (2010). https://doi.org/10.1007/s10344-009-0361-5
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10344-009-0361-5