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Late Holocene expansion of Siberian dwarf pine (Pinus pumila) in Kamchatka in response to increased snow cover as inferred from lacustrine oxygen-isotope records

Hammarlund, Dan LU ; Klimaschewski, Andrea; St Amour, Natalie A.; Andren, Elinor; Self, Angela E.; Solovieva, Nadia; Andreev, Andrei A.; Barnekow, Lena and Edwards, Thomas W. D. (2015) In Global and Planetary Change 134. p.91-100
Abstract
Holocene records of cellulose-inferred lake-water delta O-8 were produced from two lake-sediment sequences obtained in central and northern Kamchatka, Russian Far East. The sediment records share similar fluctuations in delta O-8 during the interval of ca. 5000-800 cal yr BP that correspond (inversely) with changes in K+ content of the GISP2 ice-core record from Greenland, a proxy for the relative strength of the Siberian High, suggesting control by climate-related variability in delta O-8 of regional precipitation. The dramatic expansion of Siberian dwarf pine (Pinus pumila) in northern and central Kamchatka between ca. 5000 and 4000 cal yr BP, as inferred from pollen records from the same and neighbouring sites, appears to have occurred... (More)
Holocene records of cellulose-inferred lake-water delta O-8 were produced from two lake-sediment sequences obtained in central and northern Kamchatka, Russian Far East. The sediment records share similar fluctuations in delta O-8 during the interval of ca. 5000-800 cal yr BP that correspond (inversely) with changes in K+ content of the GISP2 ice-core record from Greenland, a proxy for the relative strength of the Siberian High, suggesting control by climate-related variability in delta O-8 of regional precipitation. The dramatic expansion of Siberian dwarf pine (Pinus pumila) in northern and central Kamchatka between ca. 5000 and 4000 cal yr BP, as inferred from pollen records from the same and neighbouring sites, appears to have occurred at a time of progressively declining delta O-8 of precipitation. This development is interpreted as reflecting a regional cooling trend accompanied by increasing winter snowfall related to gradual intensification of the Siberian High from ca. 5000 to ca. 3000 cal yr BP. A thicker and more long-lasting snow cover can be assumed to have favoured P. pumila by providing a competitive advantage over other boreal and subalpine tree and shrub species in the region during the later part of the Holocene. These results, which are the first of their kind from Kamchatka, provide novel insight into the Holocene vegetational and climatic development in eastemmost Asia, as well as long-term atmospheric circulation dynamics in Beringia. (C) 2015 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Pinus pumila, Lake sediments, Oxygen isotopes, Aleutian Low, Siberian, High
in
Global and Planetary Change
volume
134
pages
91 - 100
publisher
Elsevier
external identifiers
  • wos:000365369900009
  • scopus:84947032402
ISSN
1872-6364
DOI
10.1016/j.gloplacha.2015.04.004
language
English
LU publication?
yes
id
38899a77-626d-4dcd-8ad1-706f43700c15 (old id 8539695)
date added to LUP
2016-01-20 12:24:32
date last changed
2017-05-21 03:04:04
@article{38899a77-626d-4dcd-8ad1-706f43700c15,
  abstract     = {Holocene records of cellulose-inferred lake-water delta O-8 were produced from two lake-sediment sequences obtained in central and northern Kamchatka, Russian Far East. The sediment records share similar fluctuations in delta O-8 during the interval of ca. 5000-800 cal yr BP that correspond (inversely) with changes in K+ content of the GISP2 ice-core record from Greenland, a proxy for the relative strength of the Siberian High, suggesting control by climate-related variability in delta O-8 of regional precipitation. The dramatic expansion of Siberian dwarf pine (Pinus pumila) in northern and central Kamchatka between ca. 5000 and 4000 cal yr BP, as inferred from pollen records from the same and neighbouring sites, appears to have occurred at a time of progressively declining delta O-8 of precipitation. This development is interpreted as reflecting a regional cooling trend accompanied by increasing winter snowfall related to gradual intensification of the Siberian High from ca. 5000 to ca. 3000 cal yr BP. A thicker and more long-lasting snow cover can be assumed to have favoured P. pumila by providing a competitive advantage over other boreal and subalpine tree and shrub species in the region during the later part of the Holocene. These results, which are the first of their kind from Kamchatka, provide novel insight into the Holocene vegetational and climatic development in eastemmost Asia, as well as long-term atmospheric circulation dynamics in Beringia. (C) 2015 Elsevier B.V. All rights reserved.},
  author       = {Hammarlund, Dan and Klimaschewski, Andrea and St Amour, Natalie A. and Andren, Elinor and Self, Angela E. and Solovieva, Nadia and Andreev, Andrei A. and Barnekow, Lena and Edwards, Thomas W. D.},
  issn         = {1872-6364},
  keyword      = {Pinus pumila,Lake sediments,Oxygen isotopes,Aleutian Low,Siberian,High},
  language     = {eng},
  pages        = {91--100},
  publisher    = {Elsevier},
  series       = {Global and Planetary Change},
  title        = {Late Holocene expansion of Siberian dwarf pine (Pinus pumila) in Kamchatka in response to increased snow cover as inferred from lacustrine oxygen-isotope records},
  url          = {http://dx.doi.org/10.1016/j.gloplacha.2015.04.004},
  volume       = {134},
  year         = {2015},
}