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1 December 2012 Invasive North American beaver Castor canadensis in Eurasia: a review of potential consequences and a strategy for eradication
Howard Parker, Petri Nummi, Göran Hartman, Frank Rosell
Author Affiliations +
Figure 1.
Distribution of the Eurasian (light grey) and North American (dark grey) beavers in western Eurasia. The hatched area indicates the approximate region of population overlap near the Finnish-Russian border.

Table 1.
History and present status of the North American beaver either purposely released or known to have escaped from captivity in Europe and Asia.

Table 2.
Comparative life history characteristics of adult North American and Eurasian beavers collected in Fennoscandia and the adjacent Russian Karelia-Leningrad region during winter and spring. Mean adult body length (excluding the tail) and mass (including the tail) are pooled for both sexes.

KEYWORDS
alien species
Castor canadensis
Castor fiber
competition
competitive exclusion
eradication
invasion
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