Table 2: Density (#/ha) of shrub and cactus species prior to burning, May 1995 (PRE), one month post burn, July 1995 (POST95), and one year post burn, July 1996 (POST96), on burned (B) and control (C) sites on Fort Bliss Military Reservation, Otero County, New Mexico.

Species PRE POST95 POST96 B C B C B C Burn Time Atriplex 1 20.4 21.3 2.8 24.1 0.9 18.5 .075 .099 canescens SE 6.0 8.5 2.0 12.9 0.9 11.0 Flourensia 1000.0 790.7 219.4 A 851.9 B 263.0 A 794.4 B 2 cernua SE 318.4 241.2 99.1 258.2 107.5 248.8 Larrea 3050.0 2735.2 482.4 2685.2 781.8 2779.6 .001 .032 tridentata SE 248.8 194.0 130.3 230.4 203.6 269.7 Parthenium 102.8 64.8 26.9 61.1 61.1 55.6 .746 .131 incanum SE 58.8 51.1 14.8 48.4 32.2 42.9 Prosopis 17.5 25.0 6.5 18.5 2.8 22.2 .148 1.000 glandulosa SE 5.2 12.3 3.1 8.2 1.4 10.5 Opuntia 3 316.7 169.4 40.2 A 220.9 B 46.7 A 174.6 B 2 leptocaulis SE 5.9 27.8 17.9 24.8 21.0 20.1 Opuntia 131.5 153.7 39.8 183.3 38.1 145.4 .019 .222 macrocentra SE 35.6 67.9 10.7 77.9 10.8 54.2 Opuntia 3 388.9 193.5 97.3 A 229.6 A 141.9 A 201.8 A 2 polyacantha SE 108.6 41.0 32.9 52.2 41.6 38.4 Yucca 40.7 55.6 27.8 52.8 17.3 52.8 .041 .242 elata SE 16.9 23.0 18.3 21.6 11.1 23.4

1Data rank transformed. Raw means presented. 2Treatment time interaction (). Means followed by same letter within years are not different (). 3May 1995 results used as a covariate for postburn comparisons due to pre-treatment effects (). Covariate adjusted means presented. 4Data square-root transformed. Raw means presented.