Changes in Herbaceous Species Composition in the Absence of Disturbance in a Cenchrus biflorus Roxb. Invaded Area in Central Kalahari Game Reserve, Botswana

Table 1

Similarity Czekanowski coefficients of grass and forbs species between the disturbed and undisturbed sites.

Year	Coefficients
1998	0.07
1999	0.14
2000	0.29
2001	0.48
2002	0.33
2003	0.26
2004	0.26
2005	0.40
2006	0.32