Environmental Woes of Tierra del Fuego -- Invasive Species

With a naturally small variety of wildlife, Tierra del Fuego is overrun with exotic species, the most notorious of which is the Canadian beaver. Nearly twice as many introduced species of mammals inhabit the region as natives -- including the dogs, cats, rats, mice, horses, cows and sheep that come along with human settlement. Among all of those, too, there are wild examples roaming the hills and forests of the islands. For the 10 native mammal species, there are 19 invaders competing in their environment.

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Filename: 01Cover.jpg
Copyright: © Kevin Moloney, 2000
Image Size: 3037x4605 / 5.8MB; wildlife ecosystem aliens Tierra del Fuego invasive species exotic species environment beaver
Contained in galleries: Earth, 2. Invasive Species, Argentina

With a naturally small variety of wildlife, Tierra del Fuego is overrun with exotic species, the most notorious of which is the Canadian beaver. Nearly twice as many introduced species of mammals inhabit the region as natives -- including the dogs, cats, rats, mice, horses, cows and sheep that come along with human settlement. Among all of those, too, there are wild examples roaming the hills and forests of the islands. For the 10 native mammal species, there are 19 invaders competing in their environment.