THE PECULIARITIES OF LOCAL MIGRATIONS OF THE BOW-WINGED GRASSHOPPER <i>GLYPTOBOTRHUS BIGUTTULUS</i> L. IN THE DIFFUSIVE TYPE CITY
Long-term dynamics and local migrations / wandering patterns of the Bow-winged grasshopper populations are characterized for the spatially structured transformed landscape of the diffusive type city (Novosibirsk Akademgorodok). The general trends of the long-term dynamics are described. Some peculiarities of the dynamics are shown for adjacent habitats. The level of species abundance was average. No significant temporal changes are found in the grasshopper distributions on the model plots in the central and «scientific» parts of the city. Its dense populations were on the wide lawns with short grass vegetation. Almost all marked specimens stayed in the habitats where they were released. Limited wanderings to the adjacent habitats were observed during first day after releasing. Their rates were determined by width of barriers that were unfavorable for grasshoppers (roads, bicycle roads, sidewalks). The rate of wandering may be also determined by original grasshopper density: in the habitat, where the original number of specimens was increased twice after releasing of the marked grasshoppers, the main part of the marked grasshoppers probably moved our just after releasing. In the habitat with the low level of original density, the number of observed marked specimens decreased gradually.