A lacustrine pollen record from near altitudinal forest limit, Upper Kolyma Region, northeastern Siberia

Bibliographic Data

ID12266731
AuthorsPatricia M Anderson (0000-0003-2179-4025, Quaternary Research Center, Box 351360, University of Washington, Seattle, WA 98195-1360, USA, corresponding author), Anatoly Lozhkin (0000-0001-9654-7462), Anatoly V Lozhkin (North East Interdisciplinary Research Institute, Far East Branch, Russian Academy of Science, Magadan 685000, Russia), Berta V Belaya (North East Interdisciplinary Research Institute, Far East Branch, Russian Academy of Science, Magadan 685000, Russia), Olga Yu Glushkova (North East Interdisciplinary Research Institute, Far East Branch, Russian Academy of Science, Magadan 685000, Russia), Linda B Brubaker (University of Washington)
Year1997
Volume7
Issue3
Pages331-335
Publication date1997-09-01
Open AccessYes
TypeARTICLE
VenueThe Holocene (JOURNAL)
Journal identifiersISSN: 0959-6836 • E-ISSN: 1477-0911
PublisherSAGE Publishing (PUBLISHER • US)
DOI10.1177/095968369700700309
OpenAlexW2063145624
LanguageEN
Citations received4
References cited4

A sediment core that spans the last c. 15 000 yr BP was raised from Elgennya Lake (62°05'N 149°00'E, 1040 m) which is located near the altitudinal forest limit in the western Annachag Mountains of the Upper Kolyma region, northeastern Siberia. Palynological data indicate the presence of a relatively unpro ductive herb-Salix tundra during full-glacial times. Although Betula shrubs first appeared in this upland valley at c. 12 100 yr BP, they probably were few in number. More significant changes in the vegetation date to c. 10 100 yr BP when Alnus shrubs, and perhaps a few Larix trees, colonized the Elgennya catchment. A Larix dahurica forest established in the valley by c. 9400 yr BP. By c. 8600 yr BP, Pinus pumila grew within the forest understorey and formed a shrub tundra beyond altitudinal tree-line. Arrival times for Betula, Alnus, Larix and Pinus differ by 400 (for both Betula and Pinus), 2500 and 2200 radiocarbon years, respectively, when compared to mid-elevation sites located in the eastern Annachag Mountains. Evidence for tree-line fluctuations, originally inferred from these eastern sites, is absent in the Elgennya record. Palaeoclimatic interpretations of the pollen data from the Upper Kolyma region suggest that both summer temperature and late fall/early winter snowfall play key roles in determining the observed palaeovegetational patterns. This relationship contrasts with the Alaskan pollen records which primarily seem to reflect changes in summer conditions

Betula pubescens · Biology · Climate change · Ecosystem · Geography · Glacial period · Palynology · Physical geography · Pollen · Radiocarbon dating · Shrub · Tree line · Tundra · Vegetation (pathology · Climate change and permafrost · Geology and Paleoclimatology Research · Tree-ring climate responses · Ecology · Geology · Paleontology