Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia)
A terrestrial permafrost core from Buor Khaya in northern Siberia comprising deposits of Late Pleistocene to Early Holocene age has been investigated to characterize living and past microbial communities with respect to modern and paleoclimate environmental conditions and to evaluate the potential o...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.867981 2023-05-15T17:56:23+02:00 Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia) Stapel, Janina Gabriele Schirrmeister, Lutz Overduin, Pier Paul Wetterich, Sebastian Strauss, Jens Horsfield, Brian Mangelsdorf, Kai LATITUDE: 71.420280 * LONGITUDE: 132.110560 * DATE/TIME START: 2012-04-15T00:00:00 * DATE/TIME END: 2012-04-15T00:00:00 2016-11-10 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.867981 https://doi.org/10.1594/PANGAEA.867981 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.867981 https://doi.org/10.1594/PANGAEA.867981 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Stapel, Janina Gabriele; Schirrmeister, Lutz; Overduin, Pier Paul; Wetterich, Sebastian; Strauss, Jens; Horsfield, Brian; Mangelsdorf, Kai (2016): Microbial lipid signatures and substrate potential of organic matter in permafrost deposits: Implications for future greenhouse gas production. Journal of Geophysical Research: Biogeosciences, 121, 15 pp, https://doi.org/10.1002/2016JG003483 Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.867981 https://doi.org/10.1002/2016JG003483 2023-01-20T07:33:48Z A terrestrial permafrost core from Buor Khaya in northern Siberia comprising deposits of Late Pleistocene to Early Holocene age has been investigated to characterize living and past microbial communities with respect to modern and paleoclimate environmental conditions and to evaluate the potential of the organic matter (OM) for greenhouse gas generation. Microbial life markers?intact phospholipids and phospholipid fatty acids?are found throughout the entire core and indicate the presence of living microorganisms also in older permafrost deposits. Biomarkers for past microbial communities (branched and isoprenoid glycerol dialkyl glycerol tetraether as well as archaeol) reveal links between increased past microbial activity and intervals of high OM accumulation accompanied by increased OM quality presumably caused by local periods of moister and warmer environmental conditions. Concentrations of acetate as an excellent substrate for methanogenesis are used to assess the OM quality with respect to microbial degradability for greenhouse gas production. For this purpose two acetate pools are determined: the pore water acetate and OM bound acetate. Both depth profiles reveal similarities to the OM content and quality indicating a link between the amount of the stored OM and the potential to provide substrates for microbial greenhouse gas production. The data suggest that OM stored in the permafrost deposits is not much different in terms of OM quality than the fresh surface organic material. Considering the expected increase of permafrost thaw due to climate warming, this implies a potentially strong impact on greenhouse gas generation from permafrost areas in future with positive feedback on climate variation. Dataset permafrost Siberia PANGAEA - Data Publisher for Earth & Environmental Science Buor-Khaya ENVELOPE(127.803,127.803,72.287,72.287) Khaya ENVELOPE(135.167,135.167,60.567,60.567) ENVELOPE(132.110560,132.110560,71.420280,71.420280) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
A terrestrial permafrost core from Buor Khaya in northern Siberia comprising deposits of Late Pleistocene to Early Holocene age has been investigated to characterize living and past microbial communities with respect to modern and paleoclimate environmental conditions and to evaluate the potential of the organic matter (OM) for greenhouse gas generation. Microbial life markers?intact phospholipids and phospholipid fatty acids?are found throughout the entire core and indicate the presence of living microorganisms also in older permafrost deposits. Biomarkers for past microbial communities (branched and isoprenoid glycerol dialkyl glycerol tetraether as well as archaeol) reveal links between increased past microbial activity and intervals of high OM accumulation accompanied by increased OM quality presumably caused by local periods of moister and warmer environmental conditions. Concentrations of acetate as an excellent substrate for methanogenesis are used to assess the OM quality with respect to microbial degradability for greenhouse gas production. For this purpose two acetate pools are determined: the pore water acetate and OM bound acetate. Both depth profiles reveal similarities to the OM content and quality indicating a link between the amount of the stored OM and the potential to provide substrates for microbial greenhouse gas production. The data suggest that OM stored in the permafrost deposits is not much different in terms of OM quality than the fresh surface organic material. Considering the expected increase of permafrost thaw due to climate warming, this implies a potentially strong impact on greenhouse gas generation from permafrost areas in future with positive feedback on climate variation. |
format |
Dataset |
author |
Stapel, Janina Gabriele Schirrmeister, Lutz Overduin, Pier Paul Wetterich, Sebastian Strauss, Jens Horsfield, Brian Mangelsdorf, Kai |
spellingShingle |
Stapel, Janina Gabriele Schirrmeister, Lutz Overduin, Pier Paul Wetterich, Sebastian Strauss, Jens Horsfield, Brian Mangelsdorf, Kai Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia) |
author_facet |
Stapel, Janina Gabriele Schirrmeister, Lutz Overduin, Pier Paul Wetterich, Sebastian Strauss, Jens Horsfield, Brian Mangelsdorf, Kai |
author_sort |
Stapel, Janina Gabriele |
title |
Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia) |
title_short |
Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia) |
title_full |
Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia) |
title_fullStr |
Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia) |
title_full_unstemmed |
Geochemical and microbial biomarker parameters from permafrost deposits (Buor Khaya, Siberia) |
title_sort |
geochemical and microbial biomarker parameters from permafrost deposits (buor khaya, siberia) |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.867981 https://doi.org/10.1594/PANGAEA.867981 |
op_coverage |
LATITUDE: 71.420280 * LONGITUDE: 132.110560 * DATE/TIME START: 2012-04-15T00:00:00 * DATE/TIME END: 2012-04-15T00:00:00 |
long_lat |
ENVELOPE(127.803,127.803,72.287,72.287) ENVELOPE(135.167,135.167,60.567,60.567) ENVELOPE(132.110560,132.110560,71.420280,71.420280) |
geographic |
Buor-Khaya Khaya |
geographic_facet |
Buor-Khaya Khaya |
genre |
permafrost Siberia |
genre_facet |
permafrost Siberia |
op_source |
Supplement to: Stapel, Janina Gabriele; Schirrmeister, Lutz; Overduin, Pier Paul; Wetterich, Sebastian; Strauss, Jens; Horsfield, Brian; Mangelsdorf, Kai (2016): Microbial lipid signatures and substrate potential of organic matter in permafrost deposits: Implications for future greenhouse gas production. Journal of Geophysical Research: Biogeosciences, 121, 15 pp, https://doi.org/10.1002/2016JG003483 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.867981 https://doi.org/10.1594/PANGAEA.867981 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.867981 https://doi.org/10.1002/2016JG003483 |
_version_ |
1766164535328112640 |