Entomologica Romanica Vol. 18 / 2013
2013
Table. 2. Habitats of the isopod species from Oas Mountains (1 - oak forest; 2 - beech forest; 3 - swamp; 4 - stream; 5 - coppices; 6 - semi natural wetlands; 7 - abandoned constructions, 8 - road margin; 9 - orchard; 10 - canals; 11 - distilleries, N - number of the species) Table. 3. The shelters used by terrestrial isopods from Oas Mountains (1 - fallen logs, 2 - bark, 3 - rocks, 4 - humid soil and vegetation near wetland, 5 - debris, 6 - trash cardboards, 7 - trash clothes, 8 - litter sieve, N - numbes of species under the shelters). H. transsilvanicus or P collicola. Another common species present in the 11 habitat types was A. vulgare, which appears both in natural and human influenced habitats. The lowest species richness was not registered in the strongly affected artificial habitats. Regarding the species preference to the shelters, the species that use the most varied shelters are H. riparius, H. transsilvanicus and A. vulgare. The highest species richness was registered under the moist soil and litter neighboring streams. Surprisingly, this is followed by the debris, which was located very frequently near wetlands (Table 3). Discussion The terrestrial isopod fauna of the studied region presents a similar composition to that identified in the Tur River natural protected area (Ferenti et al. 2013), situated in the plain zones neighbouring to the west Oas Mountains. In the Tur protected area N 7