Modern pollen rain and vegetation of the St. Elias Mountains, Yukon Territory

摘要: The vegetation of the area east Klutlan Glacier in St. Elias Mountains is described with methods European phytosociology. Four major types are recognized: Picea glauca forests, Populus balsamifera Betula glandulosa shrub–tundra, and Dryas integrifolia tundra.The modern pollen assemblages deposited these determined by analysis surface moss polsters, lake muds, samples from sedge swamps. Numerical analyses spectra indicate that tundra forests distinctive their composition. variation percentage content shrub–tundra so great, even when a single sample type considered, no reliable distinctions can be made two community types.