Agronomy and Horticulture Department


Date of this Version



Published in Botanical Gazette, Vol. 114, No. 1 (Sep., 1952), pp. 1-19. Copyright 1952 The University of Chicago Press. Used by permission.


Prairie vegetation is so universally mowed, grazed, or burned that little information has been recorded on its behavior under complete protection. Climax grassland, when grazed lightly or even moderately, may retain essentially its natural composition over extremely long periods (16, 18). But aside from observation there is little information upon the unusual and rare phenomenon of complete protection of grassland from disturbance over a considerable period of time.