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

Table 4

Main treatment effects on alpha diversity at combined cherokee ridge and sweet union research sites, east Texas, USA. *significantly higher 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
Fertilized	0.82	16	0.69
Unfertilized	0.89*	18*	0.72*
Burned	0.85	18*	0.68
Unburned	0.86	16	0.73*
Herbicided	0.85	18*	0.69
Unherbicided	0.86	15	0.74