河狸
栖息地
河狸水坝
水坝扩大河狸水坝四个月后,变大了
河狸建造水坝的主要目的是为了防范天敌,如土狼、狼、熊等,冬天时更容易获取食物。他们总是在夜里开工,而且是高产的建筑师,用前爪搬运泥和石块,用牙搬运木料。不移除河狸的话,很难摧毁水坝,因为他们隔夜就能重建一座水坝。河狸可能沿河建造一系列的水坝。
文化影响
哈德逊河谷地图上的河狸 c. 1635
延伸阅读
Busher, Peter E.Beaver protection, management, and utilization in Europe and North America. Kluwer Academic/Plenum Publ. 1999. ISBN 0-306-46121-8
Coles, Bryony. Damming Evidence. Current Archaeology. July–August 2007,. 18, No.6 (210): 17–25. Article on the history of beavers in Britain.
Lee Rue, Leonard.Beavers. Voyageur Press. 2001. ISBN 0-89658-548-4
Morgan, Lewis Henry.The American beaver and His Works. J.B. Lippincott & Co. 1868
Müller-Schwarze, Dietland; Lixing Sun.The beaver: natural history of a wetlands engineer. Comstock Pub. Associates. 2003. ISBN 0-8014-4098-X
National Parks, January–February.The Benefits of Beavers. National Parks magazine: 30–35. 2003
The Tent Dwellers –Beavers" habits, habitat and conservation status (as of 1908) are recurring themesby Albert Bigelow Paine.
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