The Impact of Free-Roaming Bison on Yellowstone’s Grasslands
Setting the Stage: Bison in Yellowstone — A Return after Loss At the turn of the 20th century, American bison (Bison bison) had been driven to the brink of extinction across much of their former range. Yellowstone National Park was one of the few places where they survived, albeit in greatly reduced numbers. Over decades of conservation, bison populations in Yellowstone have rebounded. Today, around 5,000 bison within the park have the capacity to roam and graze relatively freely within …