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A beaver dam or beaver impoundment is a dam built by beavers; it creates a pond which protects against predators such as coyotes, wolves and bears, and holds their food during winter. These structures modify the natural environment in such a way that the overall ecosystem builds upon the change, making beavers a keystone species and ecosystem ...
The surface of beaver ponds is typically at or near bank-full, so even small increases in stream flows cause the pond to overflow its banks. Thus, high stream flows spread water and nutrients beyond the stream banks to wide riparian zones when beaver dams are present. Finally, beaver ponds may serve as critical firebreaks in fire-prone areas. [59]
Early ecologists believed that this dam-building was an amazing feat of architectural planning, indicative of the beaver's high intellect. This theory was tested when a recording of running water was played in a field near a beaver pond. Although it was on dry land, the beaver covered the tape player with branches and mud. [61]
Fish-eating birds use beaver ponds for foraging, and in some areas, certain species appear more frequently at sites where beavers were active than at sites with no beaver activity. [ 64 ] [ 87 ] [ 88 ] In a study of Wyoming streams and rivers, watercourses with beavers had 75 times as many ducks as those without. [ 89 ]
Yearling beaver in Alhambra Creek. The Martinez beavers are a family of North American beavers living in Alhambra Creek in downtown Martinez, California.Best known as the longtime home of famed 19th/20th-century naturalist John Muir, Martinez has become a national example of urban stream restoration utilizing beavers as ecosystem engineers.
The Columbia spotted frog is typically dark brown, grey, or green and has spots on its back and sides. It lives in aquatic environments such as lakes, rivers, ponds, and marshes. They typically breed in aquatic areas such as still rivers and breed between 200 and 500 eggs at a time. [33]
Beaver's Pond Press [1] is a hybrid publishing company based in Saint Paul, Minnesota that publishes independent authors and artists. Combining elements of royalty and self-publishing models to create what they term a “mentoring press,” Beaver's Pond Press is known for their personal interactions and creative approach to publishing.
Beaverland is a non-fiction book describing the behavior, history, and cultural significance of the North American beaver.Philip discusses the relationship between beavers and humans throughout history with a focus on Indigenous cultures and the American westward expansion.