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Table 8 Diversity estimates of the overstory 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 14.400 13.857 14.943 0.290 0.275 0.304
46 Interpolated 0 114.393 108.964 119.822 0.950 0.943 0.957
90 Observed 0 136.000 128.198 143.802 0.977 0.971 0.984
135 Extrapolated 0 146.692 136.412 156.973 0.989 0.982 0.996
180 Extrapolated 0 151.990 138.980 164.999 0.994 0.989 1.000
1 Interpolated 1 14.400 13.669 15.131 0.290 0.269 0.310
46 Interpolated 1 67.638 64.328 70.947 0.950 0.943 0.957
90 Observed 1 71.518 67.973 75.064 0.977 0.970 0.984
135 Extrapolated 1 73.264 69.614 76.913 0.989 0.981 0.996
180 Extrapolated 1 74.331 70.611 78.052 0.994 0.988 1.000
1 Interpolated 2 14.400 13.789 15.011 0.290 0.274 0.305
46 Interpolated 2 47.219 45.093 49.345 0.950 0.943 0.957
90 Observed 2 48.418 46.190 50.646 0.977 0.971 0.984
135 Extrapolated 2 48.850 46.584 51.116 0.989 0.981 0.996
180 Extrapolated 2 49.069 46.784 51.354 0.994 0.988 1.000
  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