Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure
With the ongoing Arctic warming, permafrost thaw accelerated during the last decade as much as it is now a global concern for biodiversity loss, food webs and biogeochemical cycling. This rapid permafrost degradation forms features such as massive retrogressive thaw slumps that give access to except...
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ftawi:oai:epic.awi.de:54256 2024-09-15T18:29:47+00:00 Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure Courtin, Jeremy Perfumo, Amedea Stoof-Leichsenring, Kathleen Herzschuh, Ulrike 2020 application/pdf https://epic.awi.de/id/eprint/54256/ https://epic.awi.de/id/eprint/54256/1/EGU2020.pdf https://hdl.handle.net/10013/epic.eed3bca2-ed74-4619-b742-5f8ef9a147d8 unknown https://epic.awi.de/id/eprint/54256/1/EGU2020.pdf Courtin, J. , Perfumo, A. orcid:0000-0002-7503-4868 , Stoof-Leichsenring, K. orcid:0000-0002-6609-3217 and Herzschuh, U. orcid:0000-0003-0999-1261 (2020) Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure , EGU General Assembly 2020, 2020 - unspecified . doi:10.5194/egusphere-egu2020-21041 <https://doi.org/10.5194/egusphere-egu2020-21041> , hdl:10013/epic.eed3bca2-ed74-4619-b742-5f8ef9a147d8 EPIC3EGU General Assembly 2020, 2020 Conference notRev 2020 ftawi https://doi.org/10.5194/egusphere-egu2020-21041 2024-06-24T04:27:29Z With the ongoing Arctic warming, permafrost thaw accelerated during the last decade as much as it is now a global concern for biodiversity loss, food webs and biogeochemical cycling. This rapid permafrost degradation forms features such as massive retrogressive thaw slumps that give access to exceptional records for Quaternary biodiversity change investigations. The Batagay megaslump located in northern Yakutia, East Siberia, is the world’s largest thawslump known to date, and along its ~55m high headwall it gives access to Late and Mid Pleistocene permafrost deposits up to more than 500 kyrs in age. During an expedition to this unique site in 2017, sediment samples were collected with ages from more than 500 kyrs to modern time for the analysis of ancient DNA (aDNA). Our aim is to characterise the biodiversity and changes over geological timescales of this region in East Siberia. Using the aDNA extracted from these ancient environmental samples, we first performed a metabarcoding analysis (chloroplast trnL) to investigate past vegetation composition. We then performed a shotgun metagenomic analysis, which enabled a much higher depth of sequence data and allowed us to access the entire biodiversity, from Eukaryotes to Prokaryotes, Archaea and Viruses. This approach opened up new horizons, making it possible not only to investigate biodiversity composition and changes but also to infer on potential interactions across taxa and kingdoms. Both methods together allowed comparison and ensured robustness of the results obtained. We present here one of the very first studies done on the global, past and modern, biodiversity of permafrost regions which holds an enormous potential to reveal new insights into the evolution of this fragile ecosystem. Conference Object permafrost Yakutia Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
With the ongoing Arctic warming, permafrost thaw accelerated during the last decade as much as it is now a global concern for biodiversity loss, food webs and biogeochemical cycling. This rapid permafrost degradation forms features such as massive retrogressive thaw slumps that give access to exceptional records for Quaternary biodiversity change investigations. The Batagay megaslump located in northern Yakutia, East Siberia, is the world’s largest thawslump known to date, and along its ~55m high headwall it gives access to Late and Mid Pleistocene permafrost deposits up to more than 500 kyrs in age. During an expedition to this unique site in 2017, sediment samples were collected with ages from more than 500 kyrs to modern time for the analysis of ancient DNA (aDNA). Our aim is to characterise the biodiversity and changes over geological timescales of this region in East Siberia. Using the aDNA extracted from these ancient environmental samples, we first performed a metabarcoding analysis (chloroplast trnL) to investigate past vegetation composition. We then performed a shotgun metagenomic analysis, which enabled a much higher depth of sequence data and allowed us to access the entire biodiversity, from Eukaryotes to Prokaryotes, Archaea and Viruses. This approach opened up new horizons, making it possible not only to investigate biodiversity composition and changes but also to infer on potential interactions across taxa and kingdoms. Both methods together allowed comparison and ensured robustness of the results obtained. We present here one of the very first studies done on the global, past and modern, biodiversity of permafrost regions which holds an enormous potential to reveal new insights into the evolution of this fragile ecosystem. |
format |
Conference Object |
author |
Courtin, Jeremy Perfumo, Amedea Stoof-Leichsenring, Kathleen Herzschuh, Ulrike |
spellingShingle |
Courtin, Jeremy Perfumo, Amedea Stoof-Leichsenring, Kathleen Herzschuh, Ulrike Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure |
author_facet |
Courtin, Jeremy Perfumo, Amedea Stoof-Leichsenring, Kathleen Herzschuh, Ulrike |
author_sort |
Courtin, Jeremy |
title |
Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure |
title_short |
Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure |
title_full |
Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure |
title_fullStr |
Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure |
title_full_unstemmed |
Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure |
title_sort |
characterisation of east siberian paleodiversity based on ancient dna analyses of the batagay megaslump exposure |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/54256/ https://epic.awi.de/id/eprint/54256/1/EGU2020.pdf https://hdl.handle.net/10013/epic.eed3bca2-ed74-4619-b742-5f8ef9a147d8 |
genre |
permafrost Yakutia Siberia |
genre_facet |
permafrost Yakutia Siberia |
op_source |
EPIC3EGU General Assembly 2020, 2020 |
op_relation |
https://epic.awi.de/id/eprint/54256/1/EGU2020.pdf Courtin, J. , Perfumo, A. orcid:0000-0002-7503-4868 , Stoof-Leichsenring, K. orcid:0000-0002-6609-3217 and Herzschuh, U. orcid:0000-0003-0999-1261 (2020) Characterisation of East Siberian paleodiversity based on ancient DNA analyses of the Batagay megaslump exposure , EGU General Assembly 2020, 2020 - unspecified . doi:10.5194/egusphere-egu2020-21041 <https://doi.org/10.5194/egusphere-egu2020-21041> , hdl:10013/epic.eed3bca2-ed74-4619-b742-5f8ef9a147d8 |
op_doi |
https://doi.org/10.5194/egusphere-egu2020-21041 |
_version_ |
1810471218814386176 |