The hydrogeomorphological e•ects of beaver dam-building activity
Tóm tắt
A characteristic of beaver ecology is their ability to build dams and, thus, to modify the landscape to increase its suitability for their occupation. This ability gives beaver great significance as a geomorphic agent. In order to review the hydrogeomorphological effects of beaver dam-building activity, this article places a context on the likely distribution and magnitude of beaver activity by considering the spatial and temporal variability of distributions of beaver and the habitat characteristics which might favour the establishment of substantial beaver populations. A description is then given of the nature and potential dimensions of instream structures built by beaver and the environmental conditions under which dam building has been observed to occur. The hydrogeomorphological impact of dam building is then appraised both locally and at the landscape scale, illustrating the very significant process modification caused by beaver. While the European beaver, Castor fiber, is the main focus of this review, it necessarily draws extensively on the much larger literature concerning the North American beaver (Castor canadensis).
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Tài liệu tham khảo
Apple, L., Proceedings, 18th annual meeting Colorado-Wyoming Chapter, 29
Bergstrom, D., 1985, Beavers: ecologists ‘rediscover’ a natural resource
Bilby, R. E., 1984, Journal of Forestry, 82, 609
Boyce, M. S., Worldwide furbearer conference proceedings, 155
Brayton, D. S., 1984, Journal of Soil and Water Conservation, 39, 108
Collen, P., 1995, Scottish Forestry, 49, 206
Dugmore, A. R., 1914, The romance of the beaver: being the history of the beaver in the Western Hemisphere
Ermala, A., 1989, Suomen Riista, 35, 108
Erome, G. 1984: La typologie des gîtes du castor rhodanien, Castor fiber. La Terre et la Vie 39, 55-76.
Farrar, G. B., 1971, Defenders of Wildlife News, 46, 205
Hammerson, G. A., 1994, Natural Areas Journal, 14, 44
Hartman, G. 1994a: Ecological studies of a reintroduced beaver (Castor fiber) population. Dissertation, Swedish University of Agricultural Sciences, Department of Agricultural Sciences.
Hill, E. H., 1982, Wild mammals of North America, 256
Hodgdon, H. E., 1983, Acta Zoologica Fennica, 174, 99
Hogan, D. L., 1986, Channel morphology of unlogged, logged and debris torrented streams in the Queen Charlotte Islands
Johnson, P., 1984, National Wildlife, 22, 8
Keller, E. A., Adjustments of the fluvial system, proceedings of the 10th annual geomorphology symposium, 169
Leidholtbruner, K., 1992, Northwest Science, 66, 218
Lisle, T. E., Proceedings of the propagation, enhancement and rehabilitation of anadromous salmonid populations and habitat in the Pacific Northwest symposium, 93
Lizarralde, M. S., 1993, Ambio, 22, 351
Lowry, M.M. 1993: Groundwater elevations and temperature adjacent to a beaver pond in central Oregon. Unpublished MSc thesis, University of Oregon.
MacDonald, D. W., 1993, The mammals of Britain and Europe
Martin, P. R., 1977, The effect of altered streamflow on furbearing mammals of the Yellowstone River Basin, Montana
Morgan, L. H., 1868, The American beaver and his works
Parker, M., 1985, Riparian ecosystems and their management: reconciling conflicting uses, 35
Richard, P.B. 1967: Le déterminisme de la construction des barrages chez le castor du Rhône. La Terre et la Pie Vie 4, 339-470.
Richard, P. B., 1983, Mammalia, 19, 293
Sedell, J. R., Proceedings of the ‘International large river symposium'
Canadian Journal of Fisheries and Aquatic Sciences, 106, 49
Sinitsyn, M. G., 1992, Zoologicheskii Zhurnal, 71, 130
Stocker, G., 1983, Revue Suisse de Zoologie, 90, 487
Sullivan, K., Streamside management: forestry and fishery interactions, proceedings of a symposium, 39
Ward, J. V., 1983, Dynamics of lotic ecosystems, 29
Woo, M. K., 1990, Arctic, 43, 223