Abstract. The phenomena which accompany synchronization of night-time ionospheric and geomagnetic disturbances in an ULF range with periods 35-50 min near the mid-latitude station Kazan during a global magnetically quiet period have been analyzed. The comparison between dynamic spectra and wavelet patterns of these disturbances has revealed that spectral features of simultaneous disturbances of the F2-layer critical frequency and H, D, Z geomagnetic field components are similar. By studying spectral features of the F2-layer critical frequency over Kazan and disturbances of the H and D geomagnetic field components at magnetic stations which differ from Kazan station in longitude and latitude, we have established that the disturbances considered belong to the class of fast magnetosonic waves. The analysis of solar wind parameters, interplanetary magnetic field (IMF), and values of the auroral index AL in the period under study has shown that this event is associated with IMF B z component disturbances and occurs during substorm development.

The article presents materials on the ecological and phytocenotic characteristics of Dactylorhiza fuchsii (Druce) Soo in the southern and middle taiga phytocenoses of the Kirov region. In the course of the study, the typical habitats of the species were established. Vegetation analysis carried out using phytoindication scales by D.N. Tsyganov (1983), made it possible to establish fragments of ecological niches in the conditions of the southern and middle taiga. It was found that in the middle taiga phytocenoses, the species is more sensitive to changes in soil factors given by the researcher than in the southern taiga. Analysis of vegetation in terms of hemerobicity indicates the relative resistance of the species to anthropogenic impact.

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