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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