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Table 7 Diversity estimates of the regeneration layer interpolated and extrapolated based on incidence data using the iNEXT package

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

t Method Order qD qD.LCL qD.UCL SC SC.LCL SC.UCL
1 Interpolated 0 8.689 8.192 9.186 0.285 0.260 0.310
46 Interpolated 0 76.482 71.335 81.629 0.932 0.920 0.943
90 Observed 0 97.000 88.869 105.131 0.956 0.944 0.967
135 Extrapolated 0 112.371 101.118 123.623 0.966 0.952 0.979
180 Extrapolated 0 124.231 109.061 139.401 0.974 0.959 0.988
1 Interpolated 1 8.689 8.252 9.126 0.285 0.266 0.304
46 Interpolated 1 43.074 40.362 45.786 0.932 0.918 0.945
90 Observed 1 46.133 43.020 49.246 0.956 0.943 0.968
135 Extrapolated 1 47.702 44.350 51.053 0.966 0.952 0.979
180 Extrapolated 1 48.772 45.241 52.303 0.974 0.960 0.987
1 Interpolated 2 8.689 8.146 9.232 0.285 0.261 0.309
46 Interpolated 2 28.902 26.513 31.290 0.932 0.919 0.944
90 Observed 2 29.651 27.145 32.157 0.956 0.943 0.968
135 Extrapolated 2 29.921 27.372 32.471 0.966 0.951 0.981
180 Extrapolated 2 30.058 27.487 32.630 0.974 0.958 0.989
  1. t = number of sampling plots; order = Hill number with 0 = species richness; 1 = Shannon diversity, 2 = Simpson diversity; qD = the estimated diversity for a given sample size and order; SC = the estimated sample coverage; qD.LCL, qD.UCL = the lower and upper confidence level for the estimated diversity at the default value of 0.95; SC.LCL, SC.UCL = the lower and upper confidence level for the estimated sample coverage with a default value of 0.95