Abstract 47
Pavlíček, T., Vivanti, S., Fishelson, L. and Nevo, E. 2002: Biodiversity and microsite divergence of insects at "Evolution Canyon", Nahal Oren, Mt. Carmel, Israel. II. Orthoptera: Acrididae. J. Ent. Res. Soc. 4(1): 25-39.
Fifteen species of grasshoppers were recorded from "Evolution Canyon", Lower Nahal Oren, Mt. Carmel, Israel. Species richness and abundance in those were higher on the African savanna like south-facing slope (SFS) which is drier, warmer and climatically more fluctuating than the cooler and climatically less fluctuating north-facing slope (NFS) covered by a dense brushwood forest. Only one species of European origin, Oedipoda caerulescens, was recorded and, interestingly enough, this was the only species significantly more abundant on the NFS that on the SFS. Specimens of O. aurea were in general significantly larger in size and lighter coloured on the SFS than on the NFS, but on both slopes the specimens collected from darker soil habitats were darker than the specimens collected from lighter coloured rock habitats.