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Introductions of beaver in Finland (Lahti and Helminen 1974), Asian Kamchatka (Safonov 1979), Argentina (Lizarralde 1993), and other locations have resulted in the establishment of viable populations beyond their original range in North America. For example, 25 mated pairs of beaver were introduced (as a captive population) to Tierra del Fuego, Argentina, in 1946 to establish a fur industry. Animals that later escaped or were intentionally released resulted in a viable wild population. This population rapidly expanded in the absence of predators and other natural population controls, causing a substantial impact on native southern beech (Nothofagus) forests (Lizarralde 1993).
Quote from: htdwell on November 17, 2016, 04:38:06 PMIntroductions of beaver in Finland (Lahti and Helminen 1974), Asian Kamchatka (Safonov 1979), Argentina (Lizarralde 1993), and other locations have resulted in the establishment of viable populations beyond their original range in North America. For example, 25 mated pairs of beaver were introduced (as a captive population) to Tierra del Fuego, Argentina, in 1946 to establish a fur industry. Animals that later escaped or were intentionally released resulted in a viable wild population. This population rapidly expanded in the absence of predators and other natural population controls, causing a substantial impact on native southern beech (Nothofagus) forests (Lizarralde 1993).It says absence of predators, but they have lots of cougars (pumas as they call them) in Argentina and Chile. Do their cougars not like to eat beavers?