Abstract
Results of analysis of paleofloristic data on participation of pollen grains of Kochia prostrata (= Bassia prostrata ) in collective palynofloras of the Late Dryas – Holocene of the Forest (7), Forest-Steppe (7) and Steppe (3) zones of Ukraine. The spatiotemporal differentiation of distribution patterns of Kochia prostrata in the plain part of Ukraine is revealed for the first time. The presence of pollen grains of K. prostrata in fossil palynofloras allows justifying the distribution of the periglacial type of vegetation in the plain part of Ukraine in the Late Dryas. These paleofloristic results should be used in correcting and refining the reconstruction of the complex pattern of disintegration of the periglacial biota during the Holocene. The case study of K. prostrata testifies that saline soils during the Holocene were most widespread in the Left-Bank part (east of the Dnipro) of the Forest-Steppe zone of Ukraine. Diagnostic characters of pollen of Kochia prostratа are reported. The following characters are recommended for using in practical paleopalynology: dimensions of pollen grains, number of pores, distance between pore margins, exine texture and thickness.
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