Evidence for the possible role of beaver (Castor fiber) in the prehistoric ontogenesis of a mire in northwest England,UK

Abstract

Excavation of the relict stratigraphy of a drained, agriculturally reclaimed mire in Lancashire, northwest England, has revealed evidence for prehistoric (i.e., c. 820–520 cal. bc) beaver activity in the form of gnawed timber stratified in the basal sediments. The lowest horizons of the peat deposits contained the intact root systems of a dense hazel wood, indicating that the mire probably owed its origins to the rapid flooding of a relatively dry landscape. The exact cause of this inundation remains uncertain, although beaver damming is a strong candidate. The possibility that beaver activity is implicated in the flooding of the site is potentially of great significance both palaeoecologically and archaeologically. The site may represent the first recorded example in British prehistory of a non-human animal playing a role in inducing mire development. It also adds weight to the possibility that some small-scale woodland clearances identified in British pollen diagrams (which have been attributed to anthropogenic activity) may be due to the effects of beaver.

Keywords

Beaver (Castor fiber)mire ontogenesis prehistoric clearance northwest England

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References

Chambers, F.M. and Elliott, L. 1989: Spread and expansion of AlnusMill. in the British Isles: timing, agencies and possible vectors . Journal of Biogeography 16, 541–550 .

Clapham, A.R. , Tutin, T.G. and Moore, D.M. 1987: Flora of the British Isles (third edition). Cambridge: Cambridge University Press .

Coles, B. 1992: Further thoughts on the impact of beaver on temperate landscapes . In Needham, S. and Macklin, M.C., editors, Alluvial archaeology in Britain, Oxford: Oxbow Monographs 27, 93–99 .

Coles, J.M. and Orme, B.J. 1982: Beaver in the Somerset Levels: some new evidence . In Coles, J.M., editor, Somerset Levels Papers 8, 67–73 .

Coles, J.M. and Orme, B.J. 1983: Homo sapiens or Castor fiber? Antiquity 57, 95–99 .

De Rance, C.E. 1875: The geology of the country around Blackpool, Poulton and Fleetwood. London: Memoirs of the Geological Survey of England and Wales .

Faegri, K. and Iversen, J. 1989: Textbook of pollen analysis (fourth edition). Chichester: John Wiley .

Gurnell, A.M. 1998: The hydrogeomorphological effects of beaver dambuilding activity . Progress in Physical Geography 22, 167–189 .

Hallam, J.S. , Edwards, B.J.N. , Barnes, B. and Stuart, A.J. 1973: A late Glacial elk with associated barbed points from High Furlong, Lancashire . Proceedings of the Prehistoric Society 39, 100–128 .

10.

Middleton, R. , Wells, C.E. and Huckerby, E. 1995: The wetlands of north Lancashire. Lancaster: Lancaster Imprints 4 .

11.

Peglar, S.M. 1993: The mid-Holocene Ulmus decline at Diss Mere, Norfolk, UK: a year by year pollen stratigraphy from annual laminations . The Holocene 3, 1–13 .

12.

Simmons, I.G. 1996: The environmental impact of Later Mesolithic cultures. Edinburgh: Edinburgh University Press .

13.

Stuiver, M. and Reimer, P.J. 1993: Extended 14C* data base and revised CALIB 3.0 14C age calibration program . Radiocarbon 35, 215–230 .

14.

Tooley, M.J. 1978: Sea-level changes in north-west England during the Flandrian. Oxford: Oxford University Press .

15.

Wells, C.E. , Huckerby, E. and Hall, V. 1997: Mid- and late-Holocene vegetation history and tephra studies at Fenton Cottage, Lancashire, UK . Vegetation History and Archaeobotany 6, 153–166 .

16.

Zong, Y. and Tooley, M.J. 1996. Holocene sea-level changes and crustal movements in Morecambe Bay, northwest England . Journal of Quaternary Science 11, 43–58 .