Table 1.
Sample sites features.
Fig 1.
Geographical location of the sampled olive plantations.
The Calabria study area, one of the southernmost regions of Italy, and in a central position within the Mediterranean basin. The REN sites were sampled in Rende, while the TER and MIR in Terranova and Mirto respectively.
Fig 2.
Sample sites classification by means of Bray-Curtis coefficient and minimum variance clustering algorithm.
Three groups have been outlined and identified as A, B, C. REN sites belong to the Rende, TER to the Terranova and MIR to the Mirto municipalities respectively.
Fig 3.
Species classification by means of correlation coefficient and average linkage clustering algorithm.
Species have been classified into four groups (1 to 4 in the figure). The name of the species has been coded by merging the first four letters of the genus with the first four letters of the species name (see S1 Table).
Table 2.
Frequencies of the species traits.
Table 3.
Carabid species characterizing olive plantations.
The species showing aAD values above the average aAD within each group of sites outlined by cluster analysis have been listed.
Fig 4.
PCA ordination of the sample sites.
The space has been identified in four quadrants (I—IV) to facilitate the interpretation of sites position. REN and LIR sites belong to the Rende, TER to the Terranova and MIR to the Mirto municipalities respectively.
Fig 5.
PCA ordination of the species, showing the species with the highest meaningful correlation with the first two axes.
The space has been identified in four quadrants (I—IV) to facilitate the interpretation of species vs. sites position. The name of the species has been coded by merging the first four letters of the genus with the first four letters of the species name (see S1 Table for species names).