Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data
Only a few palaeo-records extend beyond the Holocene in Yakutia, eastern Siberia, since most of the lakes in the region are of Holocene thermokarst origin. Thus, we have a poor understanding of the long-term interactions between terrestrial and aquatic ecosystems and their response to climate change...
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Online Access: | https://doi.org/10.3389/feart.2024.1354284 https://doaj.org/article/1575d441c67642bfb1347060b6b0fa31 |
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ftdoajarticles:oai:doaj.org/article:1575d441c67642bfb1347060b6b0fa31 2024-09-15T18:30:15+00:00 Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data Izabella Baisheva Boris K. Biskaborn Kathleen R. Stoof-Leichsenring Andrei Andreev Birgit Heim Stefano Meucci Lena A. Ushnitskaya Evgenii S. Zakharov Elisabeth Dietze Ramesh Glückler Luidmila A. Pestryakova Ulrike Herzschuh 2024-04-01T00:00:00Z https://doi.org/10.3389/feart.2024.1354284 https://doaj.org/article/1575d441c67642bfb1347060b6b0fa31 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2024.1354284/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2024.1354284 https://doaj.org/article/1575d441c67642bfb1347060b6b0fa31 Frontiers in Earth Science, Vol 12 (2024) lake sediment diatoms macrophytes non-pollen palynomorphs palaeoreconstruction tundra Science Q article 2024 ftdoajarticles https://doi.org/10.3389/feart.2024.1354284 2024-08-05T17:49:28Z Only a few palaeo-records extend beyond the Holocene in Yakutia, eastern Siberia, since most of the lakes in the region are of Holocene thermokarst origin. Thus, we have a poor understanding of the long-term interactions between terrestrial and aquatic ecosystems and their response to climate change. The Lake Khamra region in southwestern Yakutia is of particular interest because it is in the transition zones from discontinuous to sporadic permafrost and from summergreen to evergreen boreal forests. Our multiproxy study of Lake Khamra sediments reaching back to the Last Glacial Maximum 21 cal ka BP, includes analyses of organic carbon, nitrogen, XRF-derived elements, sedimentary ancient DNA amplicon sequencing of aquatic and terrestrial plants and diatoms, as well as classical counting of pollen and non-pollen palynomorphs (NPP). The palaeogenetic approach revealed 45 diatom, 191 terrestrial plant, and 65 aquatic macrophyte taxa. Pollen analyses identified 34 pollen taxa and 28 NPP taxa. The inferred terrestrial ecosystem of the Last Glacial comprises tundra vegetation dominated by forbs and grasses, likely inhabited by megaherbivores. By 18.4 cal ka BP a lake had developed with a high abundance of macrophytes and dominant fragilarioid diatoms, while shrubs expanded around the lake. In the Bølling-Allerød at 14.7 cal ka BP both the terrestrial and aquatic systems reflect climate amelioration, alongside lake water-level rise and woodland establishment, which was curbed by the Younger Dryas cooling. In the Early Holocene warmer and wetter climate led to taiga development and lake water-level rise, reflected by diatom composition turnover from only epiphytic to planktonic diatoms. In the Mid-Holocene the lake water level decreased at ca. 8.2 cal ka BP and increased again at ca. 6.5 cal ka BP. At the same time mixed evergreen-summergreen forest expanded. In the Late Holocene, at ca. 4 cal ka BP, vegetation cover similar to modern conditions established. This study reveals the long-term shifts in aquatic and ... Article in Journal/Newspaper permafrost taiga Thermokarst Tundra Yakutia Siberia Directory of Open Access Journals: DOAJ Articles Frontiers in Earth Science 12 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
lake sediment diatoms macrophytes non-pollen palynomorphs palaeoreconstruction tundra Science Q |
spellingShingle |
lake sediment diatoms macrophytes non-pollen palynomorphs palaeoreconstruction tundra Science Q Izabella Baisheva Boris K. Biskaborn Kathleen R. Stoof-Leichsenring Andrei Andreev Birgit Heim Stefano Meucci Lena A. Ushnitskaya Evgenii S. Zakharov Elisabeth Dietze Ramesh Glückler Luidmila A. Pestryakova Ulrike Herzschuh Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data |
topic_facet |
lake sediment diatoms macrophytes non-pollen palynomorphs palaeoreconstruction tundra Science Q |
description |
Only a few palaeo-records extend beyond the Holocene in Yakutia, eastern Siberia, since most of the lakes in the region are of Holocene thermokarst origin. Thus, we have a poor understanding of the long-term interactions between terrestrial and aquatic ecosystems and their response to climate change. The Lake Khamra region in southwestern Yakutia is of particular interest because it is in the transition zones from discontinuous to sporadic permafrost and from summergreen to evergreen boreal forests. Our multiproxy study of Lake Khamra sediments reaching back to the Last Glacial Maximum 21 cal ka BP, includes analyses of organic carbon, nitrogen, XRF-derived elements, sedimentary ancient DNA amplicon sequencing of aquatic and terrestrial plants and diatoms, as well as classical counting of pollen and non-pollen palynomorphs (NPP). The palaeogenetic approach revealed 45 diatom, 191 terrestrial plant, and 65 aquatic macrophyte taxa. Pollen analyses identified 34 pollen taxa and 28 NPP taxa. The inferred terrestrial ecosystem of the Last Glacial comprises tundra vegetation dominated by forbs and grasses, likely inhabited by megaherbivores. By 18.4 cal ka BP a lake had developed with a high abundance of macrophytes and dominant fragilarioid diatoms, while shrubs expanded around the lake. In the Bølling-Allerød at 14.7 cal ka BP both the terrestrial and aquatic systems reflect climate amelioration, alongside lake water-level rise and woodland establishment, which was curbed by the Younger Dryas cooling. In the Early Holocene warmer and wetter climate led to taiga development and lake water-level rise, reflected by diatom composition turnover from only epiphytic to planktonic diatoms. In the Mid-Holocene the lake water level decreased at ca. 8.2 cal ka BP and increased again at ca. 6.5 cal ka BP. At the same time mixed evergreen-summergreen forest expanded. In the Late Holocene, at ca. 4 cal ka BP, vegetation cover similar to modern conditions established. This study reveals the long-term shifts in aquatic and ... |
format |
Article in Journal/Newspaper |
author |
Izabella Baisheva Boris K. Biskaborn Kathleen R. Stoof-Leichsenring Andrei Andreev Birgit Heim Stefano Meucci Lena A. Ushnitskaya Evgenii S. Zakharov Elisabeth Dietze Ramesh Glückler Luidmila A. Pestryakova Ulrike Herzschuh |
author_facet |
Izabella Baisheva Boris K. Biskaborn Kathleen R. Stoof-Leichsenring Andrei Andreev Birgit Heim Stefano Meucci Lena A. Ushnitskaya Evgenii S. Zakharov Elisabeth Dietze Ramesh Glückler Luidmila A. Pestryakova Ulrike Herzschuh |
author_sort |
Izabella Baisheva |
title |
Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data |
title_short |
Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data |
title_full |
Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data |
title_fullStr |
Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data |
title_full_unstemmed |
Late Glacial and Holocene vegetation and lake changes in SW Yakutia, Siberia, inferred from sedaDNA, pollen, and XRF data |
title_sort |
late glacial and holocene vegetation and lake changes in sw yakutia, siberia, inferred from sedadna, pollen, and xrf data |
publisher |
Frontiers Media S.A. |
publishDate |
2024 |
url |
https://doi.org/10.3389/feart.2024.1354284 https://doaj.org/article/1575d441c67642bfb1347060b6b0fa31 |
genre |
permafrost taiga Thermokarst Tundra Yakutia Siberia |
genre_facet |
permafrost taiga Thermokarst Tundra Yakutia Siberia |
op_source |
Frontiers in Earth Science, Vol 12 (2024) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2024.1354284/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2024.1354284 https://doaj.org/article/1575d441c67642bfb1347060b6b0fa31 |
op_doi |
https://doi.org/10.3389/feart.2024.1354284 |
container_title |
Frontiers in Earth Science |
container_volume |
12 |
_version_ |
1810471709646520320 |