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Patricia A. Villarroel Sáez
Tuesday, 04 April 2023 01:45
Invasive beavers in Tierra del Fuego
Invasive beavers in Tierra del Fuego
Brief description
In 1946, the Argentine military flew 20 beavers from Canada to Tierra del Fuego (Argentina). The beavers crossed the border to Chile, and now their population grew to 70 000 - 110 000 in Tierra del Fuego and extended to Patagonia (Argentina and Chile). This species introduction impacts Biodiversity, Ecosistemic services and Livelihoods and economic activities: it affects water withdrawal areas, which cities depend on, it generates flooding in the sewers generating the cut of the roads and it floods meadows useful for cattle. Damages cost about 70 million dollars a year in each country.
Key References
- Demographic plasticity in an invasive species: The effects of time since invasion and population management history on beavers in Tierra del Fuego, Argentina. https://zslpublications.onlinelibrary.wiley.com/doi/10.1111/jzo.13035
- Invasive beavers are destroying Tierra del Fuego. https://www.nationalgeographic.com/animals/article/beaver-overpopulation-tierra-del-fuego
- Invasión del castor en Tierra del Fuego: Subsecretario del MMA sobrevuela bosques subantárticos gravemente afectados. https://mma.gob.cl/invasion-del-castor-en-tierra-del-fuego-subsecretario-del-mma-sobrevuela-bosques-subantarticos-gravemente-afectados/
- Status of the North American beaver invasion in the Tierra del Fuego archipelago. https://www.researchgate.net/publication/340902527_Status_of_the_North_American_beaver_invasion_in_the_Tierra_del_Fuego_archipelago
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