On the question of the distribution of Coniferous Island in the north of the Central Kamchatka Depression in the Holocene

Abstract

Despite the long history of studying the conifers dispersal in the Central Kamchatka Depression during the Holocene, the understanding of vegetation dynamics in the northern part of the depression is much weaker due to the lack of palynological sections. Pollen analysis of a peat section located to the southwestern of Shiveluch volcano allowed an assessment of the "Coniferous Island’s" expansion dynamics in the northern part of the Central Kamchatka Depression. According to the data obtained, the expansion of larch forests in this area began about 700 cal. yrs. BP, i.e. 100-150 yrs. later than in the southern part of the depression. Spruce, which replaces larch during succession, began to spread here about 400 cal. yrs. BP, as in the rest of the depression.