Image #CNS-2: Mature Hyparrhenia rufa just outside the exclosure at the Canas grassland site, Costa Rica, illustrating the alternation of heavily grazed and ungrazed patches in the savanna, all of which was freely available to livestock. The stake is 1.0 m tall. (Photograph taken by Dr. R. Daubenmire, Washington State University, USA. Reproduced by kind permission of Mrs. Jean Daubenmire and Botanical Gazette - University of Chicago Press).