, Spatial arrangement of the sampling design of the 16 study sites in the west of France, p.1067

, Classification of each site based on their geographic positions (X and Y coordinates, p.1068

, complete method); 4 groups of nearby sites were defined. (b) Map of the 1069 16 study sites in the study region. See the table below for details of environmental features of 1070 each site and the specific sample design. Ancient forests are shown in turquoise

, of the 1137 spider assemblages as compared to the pairwise dissimilarities represented by PCoA 1138 ordination, for the taxonomic level (a) and the functional level (b). with their weight of functional originality (a) and specialisation (b) assessed 1161 from the functional space (see Table 1 for details of metrics). Coloured circles represent 1162 abundance standardised based on the number of days a trap was active