A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan
The Late Glacial and Holocene vegetation history of northern Kazakhstan is reconstructed using a well dated continuous pollen record from Ozerki swamp (50 degrees 24'N, 80 degrees 28'E, altitude 210 m), near Semipalatinsk. A montane steppe-taiga community (Chenopodiaceae, Artemisia, Picea,...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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2008
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Online Access: | http://infoscience.epfl.ch/record/117511 https://doi.org/10.1016/S0031-0182(97)00072-2 |
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ftinfoscience:oai:infoscience.tind.io:117511 2023-06-11T04:17:14+02:00 A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan Tarasov, P. E. Jolly, D. Kaplan, J. O. 2008-02-22T15:17:36Z http://infoscience.epfl.ch/record/117511 https://doi.org/10.1016/S0031-0182(97)00072-2 unknown http://infoscience.epfl.ch/record/117511 doi:10.1016/S0031-0182(97)00072-2 http://infoscience.epfl.ch/record/117511 Text 2008 ftinfoscience https://doi.org/10.1016/S0031-0182(97)00072-2 2023-05-08T00:14:07Z The Late Glacial and Holocene vegetation history of northern Kazakhstan is reconstructed using a well dated continuous pollen record from Ozerki swamp (50 degrees 24'N, 80 degrees 28'E, altitude 210 m), near Semipalatinsk. A montane steppe-taiga community (Chenopodiaceae, Artemisia, Picea, Larix and Betula) dominated in this area between 13,000 and 10,100 yr B.P. At the beginning of the Holocene, Poaceae and Artemisia dominated the steppe and Picea and Larix disappeared. From 7800 to 7250 yr B.P. a sharp increase in Betula pollen percentages suggests afforestation. After 5800 yr B.P., Pinus sylvestris spread through the steppe zone of Kazakhstan. These changes in vegetation distribution are interpreted in terms of changing absolute winter temperatures due to orbitally induced insolation changes. The absence of boreal conifers during the early Holocene can be explained by absolute minimum temperatures below -60 degrees C, or 8 degrees C colder than today. (C) 1997 Elsevier Science B.V. Text taiga EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Ozerki ENVELOPE(162.132,162.132,56.372,56.372) Palaeogeography, Palaeoclimatology, Palaeoecology 136 1-4 281 292 |
institution |
Open Polar |
collection |
EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
op_collection_id |
ftinfoscience |
language |
unknown |
description |
The Late Glacial and Holocene vegetation history of northern Kazakhstan is reconstructed using a well dated continuous pollen record from Ozerki swamp (50 degrees 24'N, 80 degrees 28'E, altitude 210 m), near Semipalatinsk. A montane steppe-taiga community (Chenopodiaceae, Artemisia, Picea, Larix and Betula) dominated in this area between 13,000 and 10,100 yr B.P. At the beginning of the Holocene, Poaceae and Artemisia dominated the steppe and Picea and Larix disappeared. From 7800 to 7250 yr B.P. a sharp increase in Betula pollen percentages suggests afforestation. After 5800 yr B.P., Pinus sylvestris spread through the steppe zone of Kazakhstan. These changes in vegetation distribution are interpreted in terms of changing absolute winter temperatures due to orbitally induced insolation changes. The absence of boreal conifers during the early Holocene can be explained by absolute minimum temperatures below -60 degrees C, or 8 degrees C colder than today. (C) 1997 Elsevier Science B.V. |
format |
Text |
author |
Tarasov, P. E. Jolly, D. Kaplan, J. O. |
spellingShingle |
Tarasov, P. E. Jolly, D. Kaplan, J. O. A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan |
author_facet |
Tarasov, P. E. Jolly, D. Kaplan, J. O. |
author_sort |
Tarasov, P. E. |
title |
A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan |
title_short |
A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan |
title_full |
A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan |
title_fullStr |
A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan |
title_full_unstemmed |
A continuous Late Glacial and Holocene record of vegetation changes in Kazakhstan |
title_sort |
continuous late glacial and holocene record of vegetation changes in kazakhstan |
publishDate |
2008 |
url |
http://infoscience.epfl.ch/record/117511 https://doi.org/10.1016/S0031-0182(97)00072-2 |
long_lat |
ENVELOPE(162.132,162.132,56.372,56.372) |
geographic |
Ozerki |
geographic_facet |
Ozerki |
genre |
taiga |
genre_facet |
taiga |
op_source |
http://infoscience.epfl.ch/record/117511 |
op_relation |
http://infoscience.epfl.ch/record/117511 doi:10.1016/S0031-0182(97)00072-2 |
op_doi |
https://doi.org/10.1016/S0031-0182(97)00072-2 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
136 |
container_issue |
1-4 |
container_start_page |
281 |
op_container_end_page |
292 |
_version_ |
1768376191228575744 |