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Table 1 Sample sizes and tree dimensions in 2016 (last survey) as well as mean annual tree volume growth in 1998–2016 for Norway spruce and European beech in mono-specific and mixed-species stands used for this study

From: Drought can favour the growth of small in relation to tall trees in mature stands of Norway spruce and European beech

  n 2016 d (cm) h (m) v (m3) iv1998–2016 (dm3∙yr− 1)
monospecific stands
 Norway spruce 43     
 mean   34.8 32.2 1.54 32.4
 min   21.5 27.7 0.50 0.80
 max   51.0 35.3 3.23 95.0
 European beech 28     
 mean   26.0 27.7 0.87 18.8
 min   11.3 20.0 0.09 0.40
 max   48.1 32.0 3.07 77.2
mixed-species stand
 Norway spruce 19     
 mean   35.8 32.4 1.62 30.1
 min   18.9 26.1 0.36 0.40
 max   48.0 34.9 2.86 69.0
 European beech 35     
 mean   28.4 28.5 1.05 17.1
 min   15.4 23.6 0.20 0.30
 max   47.9 32.0 3.05 91.7
 total 54     
 mean   31.0 29.9 1.25 23.2
 min   15.4 23.6 0.20 0.30
 max   48.0 34.9 3.05 91.7
  1. Sample size in 2016 (n2016), mean, minimum, and maximum values of stem diameter (d) at breast height, tree height (h) and tree volume (v), mean annual volume growth in the period 1998–2016 (iv1998–2016)