Yellowstone bison: Are the bison leaving Yellowstone National Park because it is overgrazed?

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From the National Park Service

Are the bison leaving Yellowstone National Park because it is overgrazed?

  • To date, the central and northern bison herds have not reached the estimated food-limited carrying capacity of approximately 5,500 to 7,500 bison inside the park. Also, several assessments of conditions by scientists and land managers have indicated the park is not overgrazed.
  • National Park Service biologists have recommended maintaining a bison population that fluctuates between 2,500 and 4,500 to preserve ecological processes that meet conservation needs and to mitigate social and political conflicts in Montana.

 

 

 

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