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Table 3 Mean values for the Gini coefficient, the Shannon index and the standard deviation for diameter at breast height (dbh) and height data and for the Shannon index and the evenness index for species diversity before and after harvesting. Values are expressed as mean ± 1 standard deviation. Significant treatment differences with the control are shown with asterisks after the index value, with *p = 0.05–0.01, **p = 0.01–0.001 and ***p = <0.001, respectively. Significant harvesting impacts are mentioned in the text

From: Short-term effects of single-tree selection cutting on stand structure and tree species composition in Valdivian rainforests of Chile

  Control High residual basal area (HRBA) Low residual basal area (LRBA)
Before After Before After
Diameter complexity
 Gini coefficient 0.814 ± 0.020 0.811 ± 0.040 0.801 ± 0.041 0.804 ± 0.021 0.789 ± 0.020
 Shannon index 2.051 ± 0.147 1.833 ± 0.069* 1.773 ± 0.068** 1.793 ± 0.038** 1.655 ± 0.102***
 Standard deviation 25.085 ± 3.867 19.001 ± 4.354* 16.762 ± 2.834** 17.438 ± 1.696* 14.499 ± 1.036***
Height complexity
 Gini coefficient 0.214 ± 0.026 0.198 ± 0.028 0.207 ± 0.017
 Shannon index 1.747 ± 0.172 1.458 ± 0.185* 1.457 ± 0.093*
 Standard deviation 7.973 ± 1.233 5.739 ± 1.378* 5.846 ± 0.549*
Tree species diversity
 Shannon index 1.888 ± 0.177 1.869 ± 0.206 1.979 ± 0.342 1.975 ± 0.316
 Evenness index 0.725 ± 0.043 0.717 ± 0.046 0.767 ± 0.070 0.765 ± 0.066