Niche overlap values and results of similarity tests for each pair of crested newt candidate species (the three Triturus karelinii's) and recognized species as determined with PCA-env (below diagonal) and ENFA (above diagonal).

Similarity tests compare one (candidate) species with the background of the other and the reverse. If one or both comparisons are significant, results for the comparison of (candidate) species listed from top to bottom with the background of the one listed from left to right are noted before the slash; after the slash the reverse combination is noted. * = significantly larger (p