Understory Vegetative Diversity of Post-Thinned Pine Plantations Treated with Fertilizer, Fire and Herbicide in East Texas

Table 3

Alpha diversity measures combined for all replicates and only the upland replicates (riparian replicates eliminated at cherokee ridge site), cherokee ridge and sweet union research sites combined, east Texas, USA. *significantly different at P = .1 from other treatments within column from analysis of various test proc GLM (SAS, ver 8).

Treatment	Shannon index of diversity		Species richness		Species evenness
	All	Upland	All	Upland	All	Upland
Control	0.92*	0.99*	16	18	0.77*	0.80*
Fertilized, unburned	0.77	0.76	14*	13*	0.70	0.70
Unfertilized, burned	0.89	0.83	17	17	0.72	0.680
Fertilized, burned	0.86	0.84	17	18	0.70	0.68
Unfertilized, unburned, herbicide	0.89	0.89	18	18	0.74	0.73
Fertilized, unburned, herbicide	0.84	0.83	16	16	0.71	0.69
Unfertilized, burned, herbicide	0.88	0.81	20	20	0.69	0.63
Fertilized, burned, herbicide	0.83	0.85	19	19	0.66	0.68