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Table 2 Mean differences in selected variables between paired ARN and CBS coupes harvested from 2010 to 2018

From: Variable retention in Tasmania, Australia: trends over 16 years of monitoring and adaptive management

Variable ARN mean CBS mean Mean difference (ARN-CBS) Test used Test statistic Number p value
Coupes harvested from 2010 to 2018
 Perimeter (m) 4506 3691 815 Paired t 2.36 49 0.0226
 Harvested area (ha) 25.8 38.8 − 13.1 Paired t − 4.53 49 < .0001
 Perimeter-to-area ratio (m ha−1) 186 108 77.9 Paired t 9.9 49 < .0001
 Forest influence (%) 63 32 31 Paired t 12.59 49 0.0035
 Retention (%) 28 0 28 Wilcoxon 528 49 < .0001
 Burnt seedbed (%) 63 79 − 17 Paired t − 4.39 36 < .0001
 Stocking age 1 year (%) 68 77 − 9 Paired t − 2.71 35 0.0103
 Density age 1 year (sph) 2063 2682 − 696 Paired t − 2.58 34 0.0036
  1. Means for each silvicultural system are shown as well as the mean difference between the paired coupes (ARN–CBS). Tests used, test statistics, and p values are shown, with significant differences indicated in italics