Palaeo-environments at the Batagay site in West Beringia during the late Quaternary
Permafrost deposits, which underlie vast areas of Asia, provide valuable information for reconstructing past ecological events. The syngenetic permafrost deposits of the Batagay outcrop preserve valuable data about the palaeo-environment of the Yana Highlands of inland Beringia. The former subcontin...
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ftdbthueringen:oai:www.db-thueringen.de:dbt_mods_00038013 2024-04-07T07:53:08+00:00 Palaeo-environments at the Batagay site in West Beringia during the late Quaternary Ashastina, Kseniia Römermann, Christine Wesche, Karsten Birks, Hilary Helen 2018 151 Seiten https://doi.org/10.22032/dbt.38013 https://nbn-resolving.org/urn:nbn:de:gbv:27-dbt-20190107-1238188 https://www.db-thueringen.de/receive/dbt_mods_00038013 https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00044131/dissashastina.pdf http://uri.gbv.de/document/gvk:ppn:1045719269 eng eng https://doi.org/10.22032/dbt.38013 https://nbn-resolving.org/urn:nbn:de:gbv:27-dbt-20190107-1238188 https://www.db-thueringen.de/receive/dbt_mods_00038013 https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00044131/dissashastina.pdf http://uri.gbv.de/document/gvk:ppn:1045719269 all rights reserved info:eu-repo/semantics/openAccess thesis Doktorarbeit ddc:580 ddc:570 Spezielle Botanik dissertation Text doc-type:PhDThesis 2018 ftdbthueringen https://doi.org/10.22032/dbt.38013 2024-03-08T13:29:43Z Permafrost deposits, which underlie vast areas of Asia, provide valuable information for reconstructing past ecological events. The syngenetic permafrost deposits of the Batagay outcrop preserve valuable data about the palaeo-environment of the Yana Highlands of inland Beringia. The former subcontinent of Beringia connected Eurasia and America during low sea-level stands and hosted a now extinct biomethe mammothsteppe. To unravel the environmental history of West Beringia, the Batagay permafrost sequence was investigated. The first part of the thesis reports the first sedimentological results and provides a stratigraphical and temporal framework of the sequence. The stratigraphy comprises five units, including two ice complexes, two sand units and one woody layer. OSL and AMS dating suggest that the sequence started to accumulate during the late Middle Pleistocene and extends through the Late Pleistocene, with interruptions and erosional events. The second part of the thesis presents the palaeo-environmental reconstruction at the Batagay site during marine isotope stages (MIS) 62. Plant macrofossil, palynological, entomological, and charcoal analyses were performed on the samples from the Batagay outcrop. Palaeontological data indicate that the Yana Highlands were a northern refugium for larch, steppe communities, and herbivores. That larch stands and meadow steppes persisted at the site from MIS 6 to 2 indicating environmental stability in the region. The third part of the thesis discusses the phylogeographical history of the endemic steppe plant Stellaria jacutica of the Last Interglacial age. A finding of this single seed suggests that modern steppes of the region did not establish as late as in the Holocene. Instead, they are relics of a formerly closed central Siberiannortheast Yakutian steppe belt. The data obtained from the inland Batagay outcrop provide valuable information about the evolution of vegetation in continental settings of West Beringia. Doctoral or Postdoctoral Thesis Ice permafrost Beringia Digital Library Thüringen |
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Open Polar |
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Digital Library Thüringen |
op_collection_id |
ftdbthueringen |
language |
English |
topic |
thesis Doktorarbeit ddc:580 ddc:570 Spezielle Botanik |
spellingShingle |
thesis Doktorarbeit ddc:580 ddc:570 Spezielle Botanik Ashastina, Kseniia Palaeo-environments at the Batagay site in West Beringia during the late Quaternary |
topic_facet |
thesis Doktorarbeit ddc:580 ddc:570 Spezielle Botanik |
description |
Permafrost deposits, which underlie vast areas of Asia, provide valuable information for reconstructing past ecological events. The syngenetic permafrost deposits of the Batagay outcrop preserve valuable data about the palaeo-environment of the Yana Highlands of inland Beringia. The former subcontinent of Beringia connected Eurasia and America during low sea-level stands and hosted a now extinct biomethe mammothsteppe. To unravel the environmental history of West Beringia, the Batagay permafrost sequence was investigated. The first part of the thesis reports the first sedimentological results and provides a stratigraphical and temporal framework of the sequence. The stratigraphy comprises five units, including two ice complexes, two sand units and one woody layer. OSL and AMS dating suggest that the sequence started to accumulate during the late Middle Pleistocene and extends through the Late Pleistocene, with interruptions and erosional events. The second part of the thesis presents the palaeo-environmental reconstruction at the Batagay site during marine isotope stages (MIS) 62. Plant macrofossil, palynological, entomological, and charcoal analyses were performed on the samples from the Batagay outcrop. Palaeontological data indicate that the Yana Highlands were a northern refugium for larch, steppe communities, and herbivores. That larch stands and meadow steppes persisted at the site from MIS 6 to 2 indicating environmental stability in the region. The third part of the thesis discusses the phylogeographical history of the endemic steppe plant Stellaria jacutica of the Last Interglacial age. A finding of this single seed suggests that modern steppes of the region did not establish as late as in the Holocene. Instead, they are relics of a formerly closed central Siberiannortheast Yakutian steppe belt. The data obtained from the inland Batagay outcrop provide valuable information about the evolution of vegetation in continental settings of West Beringia. |
author2 |
Römermann, Christine Wesche, Karsten Birks, Hilary Helen |
format |
Doctoral or Postdoctoral Thesis |
author |
Ashastina, Kseniia |
author_facet |
Ashastina, Kseniia |
author_sort |
Ashastina, Kseniia |
title |
Palaeo-environments at the Batagay site in West Beringia during the late Quaternary |
title_short |
Palaeo-environments at the Batagay site in West Beringia during the late Quaternary |
title_full |
Palaeo-environments at the Batagay site in West Beringia during the late Quaternary |
title_fullStr |
Palaeo-environments at the Batagay site in West Beringia during the late Quaternary |
title_full_unstemmed |
Palaeo-environments at the Batagay site in West Beringia during the late Quaternary |
title_sort |
palaeo-environments at the batagay site in west beringia during the late quaternary |
publishDate |
2018 |
url |
https://doi.org/10.22032/dbt.38013 https://nbn-resolving.org/urn:nbn:de:gbv:27-dbt-20190107-1238188 https://www.db-thueringen.de/receive/dbt_mods_00038013 https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00044131/dissashastina.pdf http://uri.gbv.de/document/gvk:ppn:1045719269 |
genre |
Ice permafrost Beringia |
genre_facet |
Ice permafrost Beringia |
op_relation |
https://doi.org/10.22032/dbt.38013 https://nbn-resolving.org/urn:nbn:de:gbv:27-dbt-20190107-1238188 https://www.db-thueringen.de/receive/dbt_mods_00038013 https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00044131/dissashastina.pdf http://uri.gbv.de/document/gvk:ppn:1045719269 |
op_rights |
all rights reserved info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.22032/dbt.38013 |
_version_ |
1795668767641960448 |