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Table 4 Results from the two-sample t test of mean densities of woody species found in both the inside and outside ORI compound

From: Enhancement of diversity, stand structure and regeneration of woody species through area exclosure: the case of a mopane woodland in northern Botswana

Species Mean (individuals ha−1) ± SEM F valuedf P value
Inside ORI Outside ORI
Colophospermum mopane 12,307 ± 2175 252 ± 64 1041 0.00001*
Vachellia tortilis 444 ± 66 83 ± 34 3.4 0.04*
Grewia retinervis 285 ± 189 5 ± 4 2285 0.00001*
Croton megalobotrys 248 ± 102 912 ± 392 16.3 0.0003*
Grewia flavescens 153 ± 83 29 ± 10 65 0.00001*
Grewia bicolor 112 ± 31 12 ± 11 8.03 0.003*
Terminalia prunioides 70 ± 16 3 ± 2 80.25 0.00001*
Boscia albitrunca 40 ± 10 0.6 ± 0.6 240 0.00001*
Grewia flava 36 ± 26 0.4 ± 0.4 3664 0.00001*
Dichrostachys cinerea 33 ± 12 3 ± 2 30.9 0.00001*
Combretum albopunctatum 16 ± 12 8 ± 4 6.8 0.005*
Ximenia americana 4 ± 3 10 ± 9 12 0.001*
Albizia anthelmintica 3 ± 2 0.5 14 0.0003*
Ziziphus mucronata 1 ± 0.6 2 ± 2 8.4 0.003*
Gymnosporia senegalensis 1 ± 1 0.5 ± 0.5 3.6 0.04*
Philenoptera violacea 173 ± 82 216 ± 76 1.04 0.5
Vachellia erioloba 143 ± 26 29 ± 17 2.02 0.16
Vachellia nilotica 59 ± 18 39 ± 14 1.48 0.3
Hyphaene petersiana 19 ± 13 35 ± 21 3 0.07
Searsia tenuinervis 15 ± 12 7 ± 7 2.5 0.09
Combretum imberbe 7 ± 3 8 ± 7 2.6 0.1
Total 14,215 ± 2036 1920 ± 446 18.8 0.0001*
  1. df degrees of freedom = 8, 9
  2. *Statistically significant