Table 1 Results from 50,000 simulations of inventory of the complexly arranged population of individual trees (Fig. 1a) to estimate individual tree mean basal area, number of individuals in the population and population total basal area, together with their standard errors. In some simulations it was assumed that a list sampling frame was available and, in others, it was assumed that only an area sampling frame list was available. Sample size (s) was 50 individuals. Sample plot size for Method 1 was 5-m square plots and for Method 2 was 25-m square plots

From: Simple random sampling of individual items in the absence of a sampling frame that lists the individuals