Table 4 Results of mixed-effects models for effects of target tree initial basal area (BA_init), neighbourhood tree species richness (NSR), exponential Shannon index (eH_S) and crown complementarity index (CCI) on basal area increment and wood volume increment with the neighbour selection approach “crown overlap” (n = 47)..: p < 0.1; *: p < 0.05; **: p < 0.01

From: Effects of local neighbourhood diversity on crown structure and productivity of individual trees in mature mixed-species forests