Deeper understanding from shallow streams

Chubs are prolific ecosystem engineers. Photo by B. Peoples Chubs (Nocomis spp.) are large minnows that are common throughout eastern North America. In spring, adult male chubs carry gravel in their mouths to construct large, mound-shaped nests for spawning. Nests can be 1.5 m in diameter and over a half-meter tall. Chub nests are unique…