Erratum to: Eur J Forest Res DOI 10.1007/s10342-013-0685-2

Unfortunately, and beyond the authors’ control, some errors crept in during the correction stage of the original publication. The most serious error is in the formula in the Materials and Methods section, following Fig. 3, where ‘ϵ B’ was omitted in the nominator of the following (correct) expression:

$$ F(r) = \frac{{{\mathbb{P}}({\text{dist}}(x, A) \le r| x \in B)}}{{{\mathbb{P}}({\text{dist}}(x, A) \le r |x \in C)}} ,\quad r \ge 0. $$

In addition to the above-mentioned error, the last matrix in the same section was left with a confusing sequential number (3) at its bottom, right-hand side, and the caption to Fig. 4 should have included the indication ‘(Color figure online)’.