Terrestrial nematodes from the Maritime Antarctic - visual representation of the data matrix (shade plot): in the columns are the 37 sites and in the rows – 44 species. White and black spaces denote absence or presence of a particular species at a given site; sites and species are arranged according to the groups derived by the clustering analyses. Significant clusters were identified with SIMPROF test and visualised in red dashed lines and a range of coloured dots. Each colour represents a group of sites/islands with similar nematode fauna.