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The beaver is a keystone species, increasing biodiversity in its territory through creation of ponds and wetlands. [1] [2] As wetlands are formed and riparian habitats enlarged, aquatic plants colonize newly available watery habitat. Insect, invertebrate, fish, mammal, and bird diversities are also expanded. [3]
By 1999, it was estimated that 90% of beavers in Finland were the American species. However, the species is not always considered invasive, as in Europe it has a similar keystone effect to European beavers, which have not recolonized the area. The beaver population has been controlled by issuing hunting licenses. [103]
Beavers are often called a “keystone” species, which in environmental terms means a species that is vital to the health and sustainability of a particular ecosystem, and without which, the ...
Beavers build dams and lodges using tree branches, vegetation, rocks and mud; they chew down trees for building material. Dams restrict water flow, and lodges serve as shelters. Their infrastructure creates wetlands used by many other species, and because of their effect on other organisms in the ecosystem, beavers are considered a keystone ...
Last year, the department adopted a new policy formally recognizing beavers as a keystone species — those that play an outsized role in maintaining the diversity of their ecosystem — and ...
A pair of beavers have been released as part of a project to rejuvenate an area of wetland. Willow and Wilson were introduced to part of the South Downs National Park, near Petersfield in ...
Keystone species play a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community. Without keystone species, the ecosystem would be dramatically different or cease to exist altogether. Some ...
The semi-aquatic mammals, hunted to extinction centuries ago, are key to helping tackle the nature and climate crises, conservationists argue.