Table 1.
BioClim variables used in modelling the bioclimatic niches.
Fig 1.
Bayesian phylogenetic trees of the focal species complexes using concatenated alignments for 28S and COI gene fragment.
The numbers on nodes indicate posterior probabilities for Bayesian trees and bootstrap support values for maximum likelihood trees. Patristic, K2P and uncorrected p-distances between A and B species within N. krameri and N. spinulifemur are 0.34, 0.14, 0.12 and 0.36, 0.19, 0.16, respectively. Coloured dots at some terminals indicate localities of co-occurrences with the respective species. The species are: Niphargus krameri A (NKA, red), Niphargus krameri B (NKB, blue), Niphargus spinulifemur A (NSA, green), and Niphargus spinulifemur B (NSB, yellow).
Fig 2.
Distribution of focal species and the studied area (the Istrian Peninsula).
The inset map indicates the geographic position of the study area within Europe. Species presence records were superimposed on a SRTM Shaded Relief (Central North) layer available from ESRI.
Table 2.
Species`differences in morphological traits related to feeding biology.
Fig 3.
Epi-hypogean distribution of the studied species, corrected for geological basement.
Table 3.
Ecological similarity between species pairs along individual niche axes and the joint niche.
Table 4.
Evidence for clumped distribution of focal species.
Table 5.
Evidence for competition inferred from presence-absence distributions.
Table 6.
Summary of all results.