FIGURE 4 Venn diagram illustrating the partitioning of
explained variance in community composition among the three sets of
explanatory variables (forest habitat type, spatial and topoclimatic
predictors) and their intersections. Variance partitioning was conducted
on the best-fit dbRDA models, which only included significant variables
after a forward selection procedure (Table 2). Analyses were performed
on the Simpson dissimilarity index (βSIM) community
dissimilarity matrices at ASV and OTU levels. Percentages refer to
adjusted coefficients of determination
(R 2ADJ). Percentages below
0.25% are not shown.