Holocene vegetation history from the Salym-Yugan Mire Area, West Siberia

The pollen stratigraphy of an ombrotrophic patterned ridge-hollow raised bog in the Salym-Yugan Mire Area in boreal West Siberia (60°109N, 72°509E) covers the entire Holocene period. Pollen data from three parallel peat cores suggest that, contrary to previous assumptions, Betula forests did not spr...

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Bibliographic Details
Published in:The Holocene
Main Authors: Pitkänen, Aki, Turunen, Jukka, Tahvanainen, Teemu, Tolonen, Kimmo
Format: Article in Journal/Newspaper
Language:English
Published: SAGE Publications 2002
Subjects:
Paleontology
Earth-Surface Processes
Ecology
Archeology
Global and Planetary Change
Tundra
Siberia
Online Access:http://dx.doi.org/10.1191/0959683602hl533rp
http://journals.sagepub.com/doi/pdf/10.1191/0959683602hl533rp
Description
Summary:The pollen stratigraphy of an ombrotrophic patterned ridge-hollow raised bog in the Salym-Yugan Mire Area in boreal West Siberia (60°109N, 72°509E) covers the entire Holocene period. Pollen data from three parallel peat cores suggest that, contrary to previous assumptions, Betula forests did not spread into tundra until the Boreal period (9000–10000 cal. BP). After 9000 cal. BP, Pinus sylvestris and Picea abies forests displaced Betula forests in the area and dominated until 4100–4300 cal. BP, when Picea decreased considerably due to a climatic change and Pinus sylvestris became the most abundant tree species. Average pollen influx estimates during the wooded period, from about 9000 cal. BP onwards, were 5600–6350 grains cm –2 yr –1 , similar to pollen-trap estimates from boreal coniferous forests.

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