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Table 1 One sample t-test results for the five calculated ratios relating species richness of the regeneration and the overstory layers

From: Tree regeneration characteristics in limestone forests of the Cat Ba National Park, Vietnam

Ratio Mean Confid. interval (95%) t-value df p-value
Species richness ratio 0.68 0.59–0.77 − 7.06 89  < 0.001
True diversity ratio 0.69 0.60–0.79 − 6.48 89  < 0.001
Same species ratio 0.38 0.35–0.42 − 33.49 89  < 0.001
Newly occurred species ratio 0.30 0.20–0.39 − 15.02 89  < 0.001
Threatened species ratio 0.36 0.26–0.46 − 12.37 89  < 0.001
  1. Shown are mean values (Mean) and estimated confidence intervals (Confid. interval) as well as t-values, degrees of freedom (df) and p-values. Significance is assigned at p < 0.05