Comeback of the beaver Castor fiber : An overview of old and new conservation problems

Comeback of the beaver Castor fiber : An overview of old and new conservation problems Due to over-hunting c. 1200 Eurasian beavers Castor fiber survived in eight relict populations in Europe and Asia at the beginning of the 20th century. Following hunting restrictions and translocation programmes in 15 countries, the Eurasian beaver became re-established over much of its former range, and presently numbers c. 430 000. The translocated populations often consist of a mixture of geographical forms. Preservation of the original, unmixed populations has therefore top priority: all five in Europe have reached the assumed minimum viable population size of c. 1880 animals each, but the three in Asia are still endangered. Their protection should be carried out at the level of river catchments. Nowadays the main threats for beavers are habitat destruction and introduced North American beavers Castor canadensis . On the other hand, growing beaver populations cause increasing conflicts with man, and population and/or damage control may therefore be required. In view of these two very different problems, we conclude that the conservation of beavers is best served by preservation and restoration of riparian woods with intact natural water regimes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biological Conservation Elsevier

Comeback of the beaver Castor fiber : An overview of old and new conservation problems

Biological Conservation, Volume 83 (2) – Feb 1, 1998

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Publisher
Elsevier
Copyright
Copyright © 1998 Elsevier Ltd
ISSN
0006-3207
D.O.I.
10.1016/S0006-3207(97)00066-9
Publisher site
See Article on Publisher Site

Abstract

Due to over-hunting c. 1200 Eurasian beavers Castor fiber survived in eight relict populations in Europe and Asia at the beginning of the 20th century. Following hunting restrictions and translocation programmes in 15 countries, the Eurasian beaver became re-established over much of its former range, and presently numbers c. 430 000. The translocated populations often consist of a mixture of geographical forms. Preservation of the original, unmixed populations has therefore top priority: all five in Europe have reached the assumed minimum viable population size of c. 1880 animals each, but the three in Asia are still endangered. Their protection should be carried out at the level of river catchments. Nowadays the main threats for beavers are habitat destruction and introduced North American beavers Castor canadensis . On the other hand, growing beaver populations cause increasing conflicts with man, and population and/or damage control may therefore be required. In view of these two very different problems, we conclude that the conservation of beavers is best served by preservation and restoration of riparian woods with intact natural water regimes.

Journal

Biological ConservationElsevier

Published: Feb 1, 1998

References

  • Long-term population development of a reintroduced beaver ( Castor fiber ) population in Sweden
    Hartman, G.
  • Development and viability of a translocated beaver Castor fiber population in the Netherlands
    Nolet, B.A.; Baveco, J.M.
  • A linear programming model of diet choice of free-living beavers
    Nolet, B.A.; Van der Veer, P.J.; Evers, E.G.J.; Ottenheim, M.M.

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