Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic)
Late Pleistocene permafrost of the Yedoma type constitutes a valuable paleo-environmental archive due to the presence of numerous and well-preserved floral and faunal fossils. The study of the fossil Yedoma inventory allows for qualitative and quantitative reconstructions of past ecosystem and clima...
Published in: | Frontiers in Earth Science |
---|---|
Main Authors: | , , , , , , , , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Frontiers Media SA
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3389/feart.2021.681511 https://www.frontiersin.org/articles/10.3389/feart.2021.681511/full |
id |
crfrontiers:10.3389/feart.2021.681511 |
---|---|
record_format |
openpolar |
spelling |
crfrontiers:10.3389/feart.2021.681511 2024-05-19T07:36:52+00:00 Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic) Wetterich, S. Rudaya, N. Nazarova, L. Syrykh, L. Pavlova, M. Palagushkina, O. Kizyakov, A. Wolter, J. Kuznetsova, T. Aksenov, A. Stoof-Leichsenring, K. R. Schirrmeister, L. Fritz, M. Deutsche Forschungsgemeinschaft Russian Foundation for Basic Research Horizon 2020 2021 http://dx.doi.org/10.3389/feart.2021.681511 https://www.frontiersin.org/articles/10.3389/feart.2021.681511/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 9 ISSN 2296-6463 journal-article 2021 crfrontiers https://doi.org/10.3389/feart.2021.681511 2024-05-01T06:50:43Z Late Pleistocene permafrost of the Yedoma type constitutes a valuable paleo-environmental archive due to the presence of numerous and well-preserved floral and faunal fossils. The study of the fossil Yedoma inventory allows for qualitative and quantitative reconstructions of past ecosystem and climate conditions and variations over time. Here, we present the results of combined paleo-proxy studies including pollen, chironomid, diatom and mammal fossil analyses from a prominent Yedoma cliff on Sobo-Sise Island in the eastern Lena Delta, NE Siberia to complement previous and ongoing paleo-ecological research in western Beringia. The Yedoma Ice Complex (IC) cliff on Sobo-Sise Island (up to 28 m high, 1.7 km long) was continuously sampled at 0.5 m resolution. The entire sequence covers the last about 52 cal kyr BP, but is not continuous as it shows substantial hiatuses at 36–29 cal kyr BP, at 20–17 cal kyr BP and at 15–7 cal kyr BP. The Marine Isotope Stage (MIS) 3 Yedoma IC (52–28 cal kyr BP) pollen spectra show typical features of tundra–steppe vegetation. Green algae remains indicate freshwater conditions. The chironomid assemblages vary considerably in abundance and diversity. Chironomid-based T July reconstructions during MIS 3 reveal warmer-than-today T July at about 51 cal kyr BP, 46-44 and 41 cal kyr BP. The MIS 2 Yedoma IC (28–15 cal kyr BP) pollen spectra represent tundra-steppe vegetation as during MIS 3, but higher abundance of Artemisia and lower abundances of algae remains indicate drier summer conditions. The chironomid records are poor. The MIS 1 (7–0 cal kyr BP) pollen spectra indicate shrub-tundra vegetation. The chironomid fauna is sparse and not diverse. The chironomid-based T July reconstruction supports similar-as-today temperatures at 6.4–4.4 cal kyr BP. Diatoms were recorded only after about 6.4 cal kyr BP. The Sobo-Sise Yedoma record preserves traces of the West Beringian tundra-steppe that maintained the Mammoth fauna including rare evidence for woolly rhinoceros’ presence. Chironomid-based ... Article in Journal/Newspaper Arctic Ice lena delta permafrost Tundra Beringia Siberia Frontiers (Publisher) Frontiers in Earth Science 9 |
institution |
Open Polar |
collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
description |
Late Pleistocene permafrost of the Yedoma type constitutes a valuable paleo-environmental archive due to the presence of numerous and well-preserved floral and faunal fossils. The study of the fossil Yedoma inventory allows for qualitative and quantitative reconstructions of past ecosystem and climate conditions and variations over time. Here, we present the results of combined paleo-proxy studies including pollen, chironomid, diatom and mammal fossil analyses from a prominent Yedoma cliff on Sobo-Sise Island in the eastern Lena Delta, NE Siberia to complement previous and ongoing paleo-ecological research in western Beringia. The Yedoma Ice Complex (IC) cliff on Sobo-Sise Island (up to 28 m high, 1.7 km long) was continuously sampled at 0.5 m resolution. The entire sequence covers the last about 52 cal kyr BP, but is not continuous as it shows substantial hiatuses at 36–29 cal kyr BP, at 20–17 cal kyr BP and at 15–7 cal kyr BP. The Marine Isotope Stage (MIS) 3 Yedoma IC (52–28 cal kyr BP) pollen spectra show typical features of tundra–steppe vegetation. Green algae remains indicate freshwater conditions. The chironomid assemblages vary considerably in abundance and diversity. Chironomid-based T July reconstructions during MIS 3 reveal warmer-than-today T July at about 51 cal kyr BP, 46-44 and 41 cal kyr BP. The MIS 2 Yedoma IC (28–15 cal kyr BP) pollen spectra represent tundra-steppe vegetation as during MIS 3, but higher abundance of Artemisia and lower abundances of algae remains indicate drier summer conditions. The chironomid records are poor. The MIS 1 (7–0 cal kyr BP) pollen spectra indicate shrub-tundra vegetation. The chironomid fauna is sparse and not diverse. The chironomid-based T July reconstruction supports similar-as-today temperatures at 6.4–4.4 cal kyr BP. Diatoms were recorded only after about 6.4 cal kyr BP. The Sobo-Sise Yedoma record preserves traces of the West Beringian tundra-steppe that maintained the Mammoth fauna including rare evidence for woolly rhinoceros’ presence. Chironomid-based ... |
author2 |
Deutsche Forschungsgemeinschaft Russian Foundation for Basic Research Horizon 2020 |
format |
Article in Journal/Newspaper |
author |
Wetterich, S. Rudaya, N. Nazarova, L. Syrykh, L. Pavlova, M. Palagushkina, O. Kizyakov, A. Wolter, J. Kuznetsova, T. Aksenov, A. Stoof-Leichsenring, K. R. Schirrmeister, L. Fritz, M. |
spellingShingle |
Wetterich, S. Rudaya, N. Nazarova, L. Syrykh, L. Pavlova, M. Palagushkina, O. Kizyakov, A. Wolter, J. Kuznetsova, T. Aksenov, A. Stoof-Leichsenring, K. R. Schirrmeister, L. Fritz, M. Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic) |
author_facet |
Wetterich, S. Rudaya, N. Nazarova, L. Syrykh, L. Pavlova, M. Palagushkina, O. Kizyakov, A. Wolter, J. Kuznetsova, T. Aksenov, A. Stoof-Leichsenring, K. R. Schirrmeister, L. Fritz, M. |
author_sort |
Wetterich, S. |
title |
Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic) |
title_short |
Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic) |
title_full |
Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic) |
title_fullStr |
Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic) |
title_full_unstemmed |
Paleo-Ecology of the Yedoma Ice Complex on Sobo-Sise Island (EasternLena Delta, Siberian Arctic) |
title_sort |
paleo-ecology of the yedoma ice complex on sobo-sise island (easternlena delta, siberian arctic) |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/feart.2021.681511 https://www.frontiersin.org/articles/10.3389/feart.2021.681511/full |
genre |
Arctic Ice lena delta permafrost Tundra Beringia Siberia |
genre_facet |
Arctic Ice lena delta permafrost Tundra Beringia Siberia |
op_source |
Frontiers in Earth Science volume 9 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2021.681511 |
container_title |
Frontiers in Earth Science |
container_volume |
9 |
_version_ |
1799476014481408000 |