We used only the plots where tally trees (DBH 75 mm) were
inventoried (10,459 field plots) and discarded 288 plots in
which the presence or absence of silvicultural treatments were
not reported. We also excluded from the analysis 363 plots
affected by forest fires that occurred between 1989 and 2000 in
Catalonia according to the available official information of the
Catalan Government (Department de Medi Ambient i
Habitatge, 2007). We assumed that the effect of silvicultural
treatments on biodiversity would be confounded with fire
effects in these plots. The total number of 3SNFI inventory
plots we analysed was 9808.