The Keystone Role of Bison in North America Tallgrass Prairie

The article is trying to relate Bison population to the growth of Tallgrass Prairies. It first tells us the history of the Bison on the prairies and then goes into a great description on how Bison have helped. These include the way the Bison roam and graze the land, the nutrients that the Bison's urine gives to the surrounding plants, and the fact that Bison carcasses can help the land. The possible audience for this article include many, starting with: adults, students, and environmentalists. The authors seem to have substantial amounts of knowledge on tallgrass prairies and they are very well educated on Bison and their roaming patterns.

Knapp, Alan K., John Blair, John Briggs, Scott Collins, David Hartnett, Loretta Johnson, and Gene Towne. "THE KEYSTONE ROLE OF BISON IN NORTH AMERICAN TALLGRASS PRAIRIE." Academic Search Premier. EBSCOHost. Karl Mundt Library, Madison. 22 Oct. 2007.