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Beaver foraging behaviour: Seasonal foraging specialization by a choosy generalist herbivore

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Abstract

Classical theory states that generalist foragers should specialise to maximise their net energy intake on a temporal basis. Within broad distributions, generalists select optimal food sources; however, the availability and representation of selected food items in the diets of generalist consumers vary geographically. Conversely, specialists, within their entire range, concentrate on specific food resources, and their diets remain constant in varying environments. The distributions of highly palatable food resources might influence the foraging patterns of species with opportunistic foraging behaviours. We used the Eurasian beaver (Castor fiber) as a model for what is considered an opportunistic generalist herbivore. We analysed whether the beavers’ foraging pattern could show specialisation. Five beaver populations living in diverse environments were evaluated, and their diet choices for overwintering were examined. Our data indicated low proportions of generality with regard to the beavers’ foraging behaviours. Within 110 territories, we observed that beavers did pursue choosy opportunistic strategies, though only to a small extent. Although we confirmed the established knowledge that beavers prefer to browse mainly poplars and willows, we also found that, contrary to many published studies, their preferences occurred regardless of riparian vegetation composition. While the beavers examined in this study preferred six genera of woody vegetation, we argue that they may have been inclined primarily to use two genera with regard to both food choice and spatial territory placement. Thus, the opportunistic feeding behaviours of generalists observed in this study may be influenced by evaluation under varying conditions.

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References

  • Aleksiuk M (1970) The seasonal food regime of arctic beavers. Ecology 51:264–270

    Article  Google Scholar 

  • Aleksiuk M, Cowan IMT (1969) The winter metabolic depression in arctic beavers (castor canadensis kuhl) with comparisons to California beavers. Can J Zool 47:965–979

    Article  Google Scholar 

  • Barták V, Vorel A, Šímová P, Puš V (2013) Spatial spread of Eurasian beavers in river networks: a comparison of range expansion rates. J Anim Ecol 82:587–597

    Article  PubMed  Google Scholar 

  • Basey JM, Jenkin SH, Busher PE (1988) Optimal central-place foraging by beavers: tree-size selection in relation to defensive chemicals of quaking aspen. Oecologia 76:278–282

    Article  Google Scholar 

  • Basey JM, Jenkins SH, Miller GC (1990) Food selection by beaver in relation to inducible defenses of Populus tremuloides. Oikos 59:57–62

    Article  Google Scholar 

  • Belovsky GE (1978) Diet optimization in a generalist herbivore: the moose. Theor Popul Biol 14:105–134

    Article  CAS  PubMed  Google Scholar 

  • Belovsky GE (1984) Summer diet optimization by beaver. Am Midl Nat 111:209–221

    Article  Google Scholar 

  • Belovsky GE (1986) Generalist herbivore foraging and its role in competitive interactions. Am Zool 25:51–69

    Google Scholar 

  • Boege K, Marquis RJ (2005) Facing herbivory as you grow up: the ontogeny of resistance in plants. Trends Ecol Evol 20:441–448

    Article  PubMed  Google Scholar 

  • Bolnick DI, Svanbäck R, Fordyce JA, Yang LH, Davis JM, Hulsey CD, Forister ML (2003) The ecology of individuals: Incidence and implications of individual specialization. Am Nat 161:1–28

    Article  PubMed  Google Scholar 

  • Brenner FJ (1967) Spatial and energy requirements of beavers. Ohio J Sci 67:242–246

    Google Scholar 

  • Bryant JP, Danell K, Provenza F, Reichardt PB, Clausen TA, Werner RA (1991) Effects of mammal browsing upon the chemistry of deciduous woody plants. In: Tallamy DW, Raup MJ (eds) Phytochemical induction by herbivores. Wiley, New York, pp 134–154

    Google Scholar 

  • 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

    Article  Google Scholar 

  • Calenge C, Dufour AB (2006) Eigenanalysis of selection ratios from animal radio-tracking data. Ecology 87:2349–2355

    Article  Google Scholar 

  • 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

    Article  Google Scholar 

  • Crawley MJ (1983) Herbivory: the dynamics of animal-plant interactions, 1st edn. Blackwell Scientific Publications, Oxford

    Google Scholar 

  • Danilov PI, Kan’shiev VY (1983) The state of populations and ecological characteristics of european (castor fiber L.) and Canadian (castor canadensis kuhl.) beavers in the northwestern USSR. Acta Zool Fenn 174:95–97

    Google Scholar 

  • R Development Core Team (2009) R: A language and environment for statistical computing, URL: http://www.R-project.org

  • Doucet CM, Fryxell JM (1993) The effect of nutritional quality on forage preference by beavers. Oikos 67:201–208

    Article  Google Scholar 

  • Egas M, Sabelis MW, Dieckmann U (2005) Evolution of specialization and ecological character displacement of herbivores along a gradient of plant quality. Evolution 59:507–520

    Article  PubMed  Google Scholar 

  • Erome G, Broyer J (1984) Analyse des relations castor-vegetation. Bièvre 6:15–63

    Google Scholar 

  • Fryxell JM, Doucet CM (1993) Diet choice and the functional response of beavers. Ecology 74:1298–1306

    Article  Google Scholar 

  • Fryxell JM, Vamosi SM, Walton RA, Doucet CM (1994) Retention time and the functional response of beavers. Oikos 71:207–214

    Article  Google Scholar 

  • Ganzhorn JU, Harthun M (2000) Food selection by beavers (castor fiber albicus) in relation to plant chemicals and possible effects of flooding on food quality. J Zool 251:391–398

    Article  Google Scholar 

  • Green JS, Flinders JT (1980) Habitat and dietary relationships of the pygmy rabbit. J Range Manag 33:136–142

    Article  Google Scholar 

  • Gross JE, Shipley LA, Thompson Hobbs N, Spalinger DE, Wunder BA (1993) Functional response of herbivores in food-concentrated patches: Tests of a mechanistic model. Ecology 74:778–791

    Article  Google Scholar 

  • Haarberg O, Rosell F (2006) Selective foraging on woody plant species by the Eurasian beaver (castor fiber) in telemark, Norway. J Zool 270:201–208

    Article  Google Scholar 

  • Hall JG (1960) Willow and aspen in the ecology of beaver on sagehen creek, California. Ecology 41:484–494

    Article  Google Scholar 

  • Halley DJ, Rosell F (2002) The beaver’s reconquest of Eurasia: Status, population development and management of a conservation success. Mammal Rev 32:153–178

    Article  Google Scholar 

  • Heidecke D (1989) Ökologische bewertung von biberhabitaten. Saugetierkd Inf 3:13–28

    Google Scholar 

  • Herrera CM, Pellmyr O (2002) Plant-animal interactions. Wiley, Blackwell, Totnes Devon

    Google Scholar 

  • Holt RD, Kimberell T (2007) Foraging and population dynamics. In: Stephens DW, Brown J, Ydenberg R (eds) Foraging, behavior and ecology. The University of Chicago Press, Chicago, pp 365–396

    Google Scholar 

  • Hutchinson GE (1957) Concluding remarks. Cold Spring Harb Sym 22:415–427

    Article  Google Scholar 

  • Jacobs J (1974) Quantitative measurement of food selection. A modification of the forage ratio and Ivlev’s electivity index. Oecologica 14:413–417

    Article  Google Scholar 

  • Jenkins SH (1975) Food selection by beavers. A multidimensional contingency table analysis. Oecologia 21:157–173

    Article  Google Scholar 

  • Jenkins SH (1979) Seasonal and year-to-year differences in food selection by beavers. Oecologia 44:112–116

    Article  Google Scholar 

  • Jenkins SH (1980) A size-distance relation in food selection by beavers. Ecology 61:740–746

    Article  Google Scholar 

  • Jenkins JC, Chojnacky DC, Heath LS, Birdsey RA (2004) Comprehensive database of diameter-based biomass regressions for North American tree species. U.S. Department of Agriculture, Forest Service, Northeastern Research Station,Newtown Square, PA

  • Kollar HP, Seiter M (1990) Biber in den Donau-Auen östlich vor Wien. Eine erfolgreiche Wiederansiedlung. Verein für Ökologie und Umweltforschung, Wien

  • Krojerová-Prokešová J, Barančeková M, Hamšíková L, Vorel A (2010) Feeding habits of reintroduced Eurasian beaver: Spatial and seasonal variation in the use of food resources. J Zool 281:183–193

    Google Scholar 

  • Law A, Bunnefeld N, Willby NJ (2014) Beavers and lilies: Selective herbivory and adaptive foraging behaviour. Freshw Biol 59:224–232

    Article  Google Scholar 

  • Manly BFJ, McDonald LL, Thomas DL, McDonald TL, Erickson WP (2002) Resource selection by animals: Statistical design and analysis for field studies, 2nd edn. Kluwer Academic Publisher, Dordrecht

    Google Scholar 

  • Milligan HE, Humphries MM (2010) The importance of aquatic vegetation in beaver diets and the seasonal and habitat specificity of aquatic-terrestrial ecosystem linkages in a subarctic environment. Oikos 119:1877–1886

    Article  Google Scholar 

  • Müller-Schwarze D, Schulte BA (1999) Behavioral and ecological characteristics of a “climax” beaver population. In: Busher PE, Dziecilowski RM (eds) Beaver protection, management, and utilization in Europe and North America. Plenum Press, New York, pp 109–127

    Google Scholar 

  • Müller-Schwarze D, Schulte BA, Sun L, Müller-Schwarze A, Müller-Schwarze C (1994) Red maple (acer rubrum) inhibits feeding by beaver (castor canadensis). J Chem Ecol 20:2021–2034

    Article  PubMed  Google Scholar 

  • Muukkonen P (2007) Generalized allometric volume and biomass equations for some tree species in Europe. Eur J For Res 126:157–166

    Article  Google Scholar 

  • Muukkonen P, Mäkipää R (2006) Biomass equations for European trees: Addendum. Silva Fenn 40:763–773

    Google Scholar 

  • Nolet BA, Hoekstra A, Ottenheim MM (1994) Selective foraging on woody species by the beaver castor fiber, and its impact on a riparian willow forest. Biol Conserv 70:117–128

    Article  Google Scholar 

  • Northcott TH (1971) Feeding habits of beaver in Newfoundland. Oikos 22:407–410

    Article  Google Scholar 

  • Novak M (1987) Beaver. In: Novak M, Baker JA, Obbard ME, Malloch B (eds) Wild furbearer management and conservation in North America. Ministry of Natural Resources, Ontario, pp 284–310

    Google Scholar 

  • Novakowski NS (1966) The winter bioenergetics of a beaver population in northern latitudes. Can J Zool 45:1107–1118

    Article  Google Scholar 

  • Panzacchi M, Linnell JDC, Odden J, Odden M, Andersen R (2008) When a generalist becomes a specialist: Patterns of red fox predation on roe deer fawns under contrasting conditions. Can J Zool 86:116–126

    Article  Google Scholar 

  • Pinheiro J, Bates D, DebRoy S, Sarkar D (2007) nlme: Linear and Nonlinear Mixed Effects Models. R package version 3.1-102, URL: http://www.R-project.org

  • Pulliam HR (1974) On the theory of optimal diets. Am Nat 108:59–74

    Article  Google Scholar 

  • Rosell F, Parker H (1995) Beaver management: present practice and Norway’s future needs. Telemark University College, Bø i Telemark, Norway (in Norwegian with English summary)

  • Severud WJ, Belant JL, Windels SK, Bruggink JG (2013) Seasonal variation in assimilated diets of American beavers. Am Midl Nat 169:30–42

    Article  Google Scholar 

  • Smith DW, Peterson RO, Drummer TD, Sheputis DS (1991) Over-winter activity and body temperature patterns in northern beavers. Can J Zool 69:2178–2182

    Article  Google Scholar 

  • Staddon JER (1983) Adaptive behaviour and learning. Cambridge University Press, Cambridge, UK

    Google Scholar 

  • Stephens DW, Krebs JR (1986) Foraging theory. Princeton University Press, Princeton

    Google Scholar 

  • Svendsen GE (1980) Seasonal change in feeding patterns of beaver in southern Ohio. J Wildl Manag 44:285–290

    Article  Google Scholar 

  • Thomas DL, Taylor EJ (2006) Study designs and tests for comparing resource use and availability II. J Wildl Manag 70:324–336

    Article  Google Scholar 

  • Veraart AJ, Nolet BA, Rosell F, De Vries PP (2006) Simulated winter browsing may lead to induced susceptibility of willows to beavers in spring. Can J Zool 84:1733–1742

    Article  Google Scholar 

  • Wand MP, Ripley BD (2013) Kern Smooth: functions for kernel smoothing for Wand and Jones (1995). R package version 2.23-10, http://CRAN.R-project.org/package=KernSmooth. Accessed 14 March 2014

  • White GC, Garrott RA (1990) Analysis of wildlife radio-tracking data. Academic, London

    Google Scholar 

  • Wilsson L (1971) Observations and experiments on the ethology of the European beaver (Castor fiber L.). Viltrevy 8:115–266

  • Woo KJ, Elliott KH, Davidson M, Gaston AJ, Davoren GK (2008) Individual specialization in diet by a generalist marine predator reflects specialization in foraging behaviour. J Anim Ecol 77:1082–91

    Article  PubMed  Google Scholar 

  • Zurowski W, Kasperczyk B (1986) Characteristics of a European beaver population in the Suwalki Lakeland. Acta Theriol 31:311–325

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Acknowledgment

We would like to thank to our main field colleague J. Korbel. Also, our thanks go to K. Konečná for her English reviews and to J. Douda for his ordination analysis. For assistance in the field, we thank S. Baker, M. Cvoligová, V. Dvořák, K. Fuksová, J. Matrková, M. Mazalová, M. Pihera, V. Spurná, H. Slezáková, J. Šimčík, and K. Šimůnková. This research material has been produced with grant support from the Ministry of Environment of the Czech Republic (SP/2d4/52/07) and support of The Agency for Nature Conservation and Landscape Protection of the Czech Republic.

Ethical standards

All experiments comply with the current laws of the Czech Republic. We did not use to manipulation with animals demanding special issues of Agency for Nature Conservation and Landscape Protection of the Czech Republic (state nature conservation authority of the Czech Republic).

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Authors and Affiliations

  1. Department of Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 21, Prague, Czech Republic

    Aleš Vorel, Lenka Hamšíková & Jana Korbelová

  2. Department of Ecology, Faculty of Science, Palacký University, tř. Svobody 26, 771 46, Olomouc, Czech Republic

    Lenka Válková & Jaroslav Maloň

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  1. Aleš Vorel
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  2. Lenka Válková
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  3. Lenka Hamšíková
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  4. Jaroslav Maloň
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  5. Jana Korbelová
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Correspondence to Aleš Vorel.

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Communicated by K. E. Ruckstuhl

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Vorel, A., Válková, L., Hamšíková, L. et al. Beaver foraging behaviour: Seasonal foraging specialization by a choosy generalist herbivore. Behav Ecol Sociobiol 69, 1221–1235 (2015). https://doi.org/10.1007/s00265-015-1936-7

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  • DOI: https://doi.org/10.1007/s00265-015-1936-7

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