Abstract
Paleopalynological researches of modern sedimentary deposits allowed discovering specifics and tendencies of the development of vegetation cover on the islands of Peter the Great Bay in Holocene under climatic fluctuations and the related with them variations of the sea level as well as under the impact of a human factor. In cold Holocene periods small-leaved-broadleaved forests with Betula fruticosa were widespread. During warm periods broadleaved forests predominated. In the second half of Late Holocene the development of coniferous-broadleaved forests occurred. The climate was colder than the present one. Vegetation of modern islands consists of broadleaved and sparse broadleaved forests which appeared under the impact of the anthropogenic factor. It is also noted that the areas occupied with meadow and shrubby communities are spreading. The comparative analysis of the islands by the similarity of the stages of paleovegetation development allows identifying regularities and factors of the development of vegetation cover.
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