To the problem of integrated biogeographic analysis of various component of biota

Problem of integrated biogeographic analysis of various components of biota is discussed. Florae and biotae of vascular plants, lichens and myxomicetes of Valdai and adjacent physicogeographical provinces of Russian Plain are treated as model objects. Peculiarity of changes in florae and biotae in longitudinal and altitudinal directions is revealed. General level of richness, specificity and degree of similarity of specific composition of analyzed components depend to various degrees on climatic conditions, altitudinal differentiation of plant as well as on geomorphology. Different structure of altitudinal and longitudinal trends is due to peculiarities in biology and ecology of taxonomic groups.