Busy Beavers: Nature's Ecosystem Engineers

The scale of the projects undertaken by these "ecosystem engineers" might be smaller than those of humans, but when busy beavers get to work they create wetlands habitat that in turn supports a wide diversity of wildlife.

busy beavers ecosystem engineers - beaver with tree
Like humans, busy beavers are ecosystem engineers. Unlike humans, beavers rely on sharp teeth to get the dam-building materials they need.
PHOTO: LYNN M. STONE