Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record
We present a high‐resolution reconstruction of the vegetation and climate dynamics during the penultimate interglacial, corresponding with Marine Isotope Stage ( MIS ) 7, based on detailed palynological analyses of lacustrine sediments from Lake El'gygytgyn, northeastern Siberia. The analysed s...
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crwiley:10.1111/bor.12373 2024-09-30T14:21:56+00:00 Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record Zhao, Wenwei Andreev, Andrei A. Tarasov, Pavel E. Wennrich, Volker Melles, Martin China Scholarship Council Nantong University Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft 2019 http://dx.doi.org/10.1111/bor.12373 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12373 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12373 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12373 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 48, issue 2, page 507-515 ISSN 0300-9483 1502-3885 journal-article 2019 crwiley https://doi.org/10.1111/bor.12373 2024-09-11T04:15:00Z We present a high‐resolution reconstruction of the vegetation and climate dynamics during the penultimate interglacial, corresponding with Marine Isotope Stage ( MIS ) 7, based on detailed palynological analyses of lacustrine sediments from Lake El'gygytgyn, northeastern Siberia. The analysed sediments were deposited between 246 and 181 ka ago (late MIS 8 to early MIS 6.6). The interglacial vegetation was characterized by herb and shrub (mainly alder and birch) dominated plant communities. Pollen‐based biome reconstruction shows a dominance of the tundra ( TUND ) biome, thus indicating rather open vegetation. Warmer intervals ( MIS 7.5, 7.3 and 7.1) were marked by an increase in the cold deciduous forest ( CLDE ) biome scores and a synchronous decrease in the cold steppe ( STEP ) biome scores. The thermal maximum occurred during MIS 7.1, as indicated by the highest CLDE biome scores occurring in this period, and lasted ~10 ka, possibly favoured by the high precession‐related summer insolation and the legacy of the preceding mild and dry stadial ( MIS 7.2). In contrast, MIS 7.3 and 7.5 were characterized by shorter durations (~4 ka) and lower summer temperatures. The preceding cold glacial and stadial ( MIS 8 and 7.4, respectively) might have led to an extensive distribution of permafrost that hindered vegetation development during the subsequent warm intervals. MIS 7.4 and 6.6 were cold and wet, probably triggered by low obliquity values and coevally low precession‐related summer insolation. As a result, these periods were marked by significantly reduced summer temperatures and an enhanced snow‐ice albedo feedback. The obtained reconstructions provide potential scenarios for future climate changes and allow a better understanding of the relationship between vegetation, climate and external/internal forcings in the high latitudes. Article in Journal/Newspaper albedo Arctic Ice permafrost Tundra Siberia Wiley Online Library Arctic Boreas 48 2 507 515 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
We present a high‐resolution reconstruction of the vegetation and climate dynamics during the penultimate interglacial, corresponding with Marine Isotope Stage ( MIS ) 7, based on detailed palynological analyses of lacustrine sediments from Lake El'gygytgyn, northeastern Siberia. The analysed sediments were deposited between 246 and 181 ka ago (late MIS 8 to early MIS 6.6). The interglacial vegetation was characterized by herb and shrub (mainly alder and birch) dominated plant communities. Pollen‐based biome reconstruction shows a dominance of the tundra ( TUND ) biome, thus indicating rather open vegetation. Warmer intervals ( MIS 7.5, 7.3 and 7.1) were marked by an increase in the cold deciduous forest ( CLDE ) biome scores and a synchronous decrease in the cold steppe ( STEP ) biome scores. The thermal maximum occurred during MIS 7.1, as indicated by the highest CLDE biome scores occurring in this period, and lasted ~10 ka, possibly favoured by the high precession‐related summer insolation and the legacy of the preceding mild and dry stadial ( MIS 7.2). In contrast, MIS 7.3 and 7.5 were characterized by shorter durations (~4 ka) and lower summer temperatures. The preceding cold glacial and stadial ( MIS 8 and 7.4, respectively) might have led to an extensive distribution of permafrost that hindered vegetation development during the subsequent warm intervals. MIS 7.4 and 6.6 were cold and wet, probably triggered by low obliquity values and coevally low precession‐related summer insolation. As a result, these periods were marked by significantly reduced summer temperatures and an enhanced snow‐ice albedo feedback. The obtained reconstructions provide potential scenarios for future climate changes and allow a better understanding of the relationship between vegetation, climate and external/internal forcings in the high latitudes. |
author2 |
China Scholarship Council Nantong University Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Zhao, Wenwei Andreev, Andrei A. Tarasov, Pavel E. Wennrich, Volker Melles, Martin |
spellingShingle |
Zhao, Wenwei Andreev, Andrei A. Tarasov, Pavel E. Wennrich, Volker Melles, Martin Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record |
author_facet |
Zhao, Wenwei Andreev, Andrei A. Tarasov, Pavel E. Wennrich, Volker Melles, Martin |
author_sort |
Zhao, Wenwei |
title |
Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record |
title_short |
Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record |
title_full |
Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record |
title_fullStr |
Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record |
title_full_unstemmed |
Vegetation and climate during the penultimate interglacial of the northeastern Russian Arctic: the Lake El'gygytgyn pollen record |
title_sort |
vegetation and climate during the penultimate interglacial of the northeastern russian arctic: the lake el'gygytgyn pollen record |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/bor.12373 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12373 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12373 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/bor.12373 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Ice permafrost Tundra Siberia |
genre_facet |
albedo Arctic Ice permafrost Tundra Siberia |
op_source |
Boreas volume 48, issue 2, page 507-515 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/bor.12373 |
container_title |
Boreas |
container_volume |
48 |
container_issue |
2 |
container_start_page |
507 |
op_container_end_page |
515 |
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1811646260644413440 |