Search results
Results from the WOW.Com Content Network
The North American beaver ... this is a fraction of the originally estimated 100 to 200 million North American beavers before the days of the fur trade. ...
The number of beavers and river otters killed during the fur trade was devastating for the animals' North American populations. The natural ecosystems that came to rely on the beavers for dams , river and water management and other vital needs were also ravaged, leading to ecological destruction , significant environmental change, and even ...
Historically, the North American beaver was trapped and nearly extirpated because its fur was highly sought after. Protections have allowed the beaver population on the continent to rebound to an estimated 6–12 million by the late 20th century; still far lower than the originally estimated 60–400 million North American beavers before the ...
The North American beaver (Castor canadensis) is an invasive species in Tierra del Fuego, at the southern end of Patagonia. Tierra del Fuego is a large island encompassing parts of Chile and Argentina , so that policies and actions to control the species have mainly been binational.
Nicks, John. "Orkneymen in the HBC, 1780–1821." In Old Trails and New Directions: Papers of the Third North American Fur Trade Conference. Edited by Carol M. Judd and Arthur J. Ray, 102–126. Toronto: University of Toronto Press, 1980. Podruchny, Carolyn. Making the Voyageur World: Travelers and Traders in the North American Fur Trade.
North American beavers (Castor canadensis) are the largest rodent species in the United States and the second largest in the world. They have stocky bodies, weigh between 35 and 65 pounds, and are ...
Starting with the arrival of the Tonquin and foundation of Fort Astoria in March 1811, the American Pacific Fur Company (PFC) gradually established a commercial presence along the Columbia River. The primary product sought by the company for sale in the Qing Empire were the fur pelts of the North American beaver.
The fur trade's killing of beavers proved devastating for the North American beaver population. [48] The natural ecosystems that came to rely on the beavers for dams, water and other vital needs were also devastated leading to ecological destruction, environmental change, and drought in certain areas.