Patterns of quantitative distribution of zonal-range groups of species andspatial differentiation of auto- and synecological diversity of the Acrididae at the Irtysh River meridian

Ecological features of the Acrididae species with different ranges are espe cially distinct when their quantitative distribution by geomorphological la ndscapes is analyzed by the method of isopleth portraying. This method prov ides for moderate formalization necessary for comparison. Cluster analysis of the composition of multispecies landscape communities made it possible t o reveal not only alpha, but also beta diversity, which can be regionalized in the skeleton map. The band of the highest diversity is expressed at the boundary between the usual and dry steppes and is displaced to the south i n the river valleys.