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North American beaver skeleton (Museum of Osteology) Lithograph of a Canadian beaver, 1819. The beaver is the largest rodent in North America and competes with its Eurasian counterpart, the European beaver, for being the third-largest in the world, both following the South American capybara and lesser capybara. The European species is slightly ...
The Eurasian beaver (Castor fiber) or European beaver is a species of beaver widespread across Eurasia, with a rapidly increasing population of at least 1.5 million in 2020. The Eurasian beaver was hunted to near-extinction for both its fur and castoreum , with only about 1,200 beavers in eight relict populations from France to Mongolia in the ...
North American beavers build more open-water lodges than Eurasian beavers. Beaver lodges built by new settlers are typically small and sloppy. More experienced families can build structures with a height of 2 m (6 ft 7 in) and an above-water diameter of 6 m (20 ft).
A study of mid-elevation (1,840 feet (560 m) - 3,310 feet (1,010 m)) beaver-dammed vs. undammed lentic streams in Washington's southern Cascades found that prevalence of slow-developing amphibian populations was 2.7 times higher in the former, because beaver ponds were deeper with longer hydroperiods.
Rivers with an average discharge of 5,000 m 3 /s or greater, as a fraction of the estimated global total.. This article lists rivers by their average discharge measured in descending order of their water flow rate.
The map shown in the post was created by AMBER, a European river management-related consortium of "large hydropower businesses, ... The map shows existing water barriers in the Valencia area, ...
Eurasian beaver and kit by the River Tay in Scotland. After being extinct for several centuries, beavers were reintroduced to Great Britain in 2009. The Eurasian beaver has been the successful subject of a century of official and unapproved species reintroduction programs in Europe and Asia.
And for comparison, here is the mean and median wealth per adult in seven European countries. Switzerland. Mean (average) wealth per adult: $685,226. Median wealth per adult: $167,353.