The beaver, master carpenters of the Animal Kingdom are building more than a luxury protective shelter and raise young. Also known as ecosystem engineers, beaver dams beneficially alter the surrounding environment more than any other mammal. Biodiversity began to suffer as beaver populations diminished - but why? How is a structure built by America's largest rodent so important to the natural landscape? Human built dams, Beaver Dam Analogues, or BDAs, what are they and what is the purchase?
