CTFR Journal

Figure 1: Tree coordinates (a, d and g) and individual-tree inclusion zones for saplings in the example stands. Subfigures ac, df and gi refer to example stands 1, 2 and 3, respectively. Damaged trees are marked as black dots (a, d and g) or their inclusion zone painted in dark gray. The subfigures in the middle and right column differ only by the size of the tree inclusion zones. The white area in these subfigures is considered unstocked.

Figure 2: Proportion of damaged trees for the three example estimates using the plot-count method (a, d and g) search distances of 1.13m (b, e and h) and 3.99m (c, f and i) over the number of sample plots. Subfigures ac, df and gi refer to example stands 1, 2 and 3, respectively

Figure 3: Results for the 11 field survey sites described in Table 3 . Abies alba sapling density calculated based on the plot-count method (a) or the k-tree method with the distance of the two Abies sapling nearest to the plot center (b). The proportion of browsed Abies saplings - the so called browsing intensity - based on the plot-count method (c) and proportion of occupied stand area (d) for the group of browsed Abies saplings (black triangle) and in total (gray square) , For panels ac) median (bold line), first and third quartile (bottom and top of the box) with whiskers at quartile ± 1.5 * interquartile range and individual points more extreme in value (circles) have been drawn using boxplot in default R code. For better visibility, in panel a) and b) a line is drawn at a density of 796 saplings.

 

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