Tierra Del Fuego Beaver Paradise
Tierra del Fuego Beaver Paradise: Expansion of beavers since introduction in 1946
Map of the archipelagic region of southern South America, showing the approximate dates of expansion of Castor canadensis throughout the area. The initial introduction of 25 pairs of beavers in 1946 took place near Fagnano Lake on Tierra del Fuego, an island shared between Argentina and Chile. By the 1960s, invasive beavers had reached the Chilean islands south of the Beagle Channel, and today a resident population is also found on mainland Chile. Source: C.B. Anderson, 'Invaders in an Invasible Land', Principles of Conservation Biology 3rd Edition (2006) pp. 321-323

Beaver expansion 1946-2000- Tierra del Fuego
source: This expansion has been described and mapped by C.B. Anderson, Source: C.B. Anderson, 'Invaders in an Invasible Land', Principles of Conservation Biology 3rd Edition (2006) pp. 321-323

location of the release of the first beavers (approximate)
source

beaver expansion 1945-1950

perhaps one of the first beaver systems

beaver systems

beaver system

typical beaver managed stream

elaborate beaver system

beaver system with long dams, largest over 500m

beaver dams

beaver stream

beaver systems, lodges

beaver expansion 1950-1960s

Beaver landscape

Typical large beaver system in a mountainous beaver landscape

amazing beaver landscape

major beaver system

series of beaver dams

beaver dams and tree kill

some major beaver activity

beaver activity

major beaver systems

beavers everywhere

beautiful beaver system, dams and lodges

beaver systems on both sides

small beaver dams

small beaver system

small dams

beaver landscape

beavers managing the edge between upland and wetland

beaver dams in snow

start of beaver activity

beaver tree kill

beaver most active in the edge areas

intensive beaver activity and dams