Growth and Recruitment of Nonnative Smallmouth Bass along the Upstream Edge of Its Riverine Distribution

Nonnative species, such as smallmouth bass, have been widely introduced into river systems, and once established, often spread to new areas. Northwest CASC supported researchers found that beyond just temperature-based predictions, multiple mechanisms affect smallmouth bass growth and survival into new areas. Understanding these mechanisms may inform manager’s strategies to prevent the future spread of smallmouth bass into headwater salmon habitat in the Northwest.