7. Leila Philip examines beavers as a "keystone species" essential for biodiversity in areas like the Chesapeake Bay. She discusses Beaver Dam Analogs—human-built structures designed to recruit beavers for free environmental engineering. Philip argues tha

7. Leila Philip examines beavers as a "keystone species" essential for biodiversity in areas like the Chesapeake Bay. She discusses Beaver Dam Analogs—human-built structures designed to recruit beavers for free environmental engineering. Philip argues that living beavers provide more economic and ecological value than harvested pelts. (7)