Пышки

Spore-pollen analysis revealed the regional features of the vegetation communities for­ming. The percentages of all the AP and NAP taxa have been calculated of the total pollen sum AP+NAP (AP = pollen sum of trees and shrubs; NAP = pollen sum of upland herbs). The percentages of the pteridophytes and aqu­atics have been calculated of the total pollen sum. Indication of the pollen zones has been fulfilled according to the scheme of Makhnach et al. (1981) with some corrections based on more recent investigations.

Below is given a short description of the re­semblance and differences of the pollen zones beginning from the Sozhski Late Glacial.

DESCRIPTION OF THE POLLEN ZONES

SOZHSKI (=WARTANIAN, MOSKOVSKI) LATE GLACIAL

szi  —   Picea-NAP-Betula   I  Pinus-Picea-NAP-Betula

Domination of the conifer species and herbs is characteristic of this zone as a whole. Along with that a high percentage of the NAP among which Artemisia and Chenopodiaceae are es­pecially notable. In the west, Pinus is the dominant taxon, Picea and Betula are abundant and Larix is usual. Artemisia prevails among the NAP.

MURAVIAN (=EEMIAN, MIKULINSKI) INTERGLACIAL

mr1 — Betula

In general a dominance of Betula and conifer trees pollen is peculiar for this zone. In the west a high percentage of Betula and Pinus along with the presence of Larix are re­corded. In addition a significant amount of Polypodiaceae is fixed.

mr2 — Pinus

In general, a dominance of Pinus is peculiar for this zone. In the west, the portions of Pinus and Betula are approximately equal, Quercus appears in no­ticeable amounts, Larix and Picea are present continuously and the NAP is less abundant.

mr3 — Pinus-Betula-Quercus I Pinus-Betu-la-Carpinus

In general, a domination of Pinus and Betu­la as well as a significant participation of the NAP at the background of the permanent Quercetum mixtum occurrence are charac­teristic of this zone. In the Pyshky section, this zone is characterized by roughly equal amounts of Quercus and Betula as well as by significant percentages of Ulmus.

mr4 — Quercus-Pinus-Corylus

Maximum of Quercus along with an increas­ing percentages of Corylus and decreasing par­ticipation of Pinus is a common feature of this zone over the whole study area. In the Pyshki section, this zone is characterized by the maximum of Ulmus and by still occurring Larix and Picea.

mr5 — Corylus-Tilia-Alnus

Arboreal species dominate while the herb plants are few. Synchronous maxima of Tilia and Alnus, preceded by the maximum of Corylus are characteristic of this zone. In most sections these events take place against a background of an increasing role of Carpinus with the exception of the Pyshky section, where Carpinus has relatively low values. In Pyshki, an occurrence of Quercus, an increas­ing portion of Polypodiaceae and sporadic grains of Pinus, Betula, Larix are observed in this zone.

Shalaboda V.L. Characteristic features of Muravian (Eemian) pollen succession from various regions of Belarus // Acta Paleobotanica. 41(1). 2001. Pp. 27-41.