Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica
Abstract The soils of East Antarctica have no rhizosphere with the bulk of organo-mineral interactions confined to the thin microbial and cryptogamic crusts that occur in open or cryptic niches and are collectively known as biological soil crust (BSC). Here we demonstrate that cryptic hypolithic var...
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Springer Science and Business Media LLC
2020
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Online Access: | http://dx.doi.org/10.1038/s41598-020-67248-3 http://www.nature.com/articles/s41598-020-67248-3.pdf http://www.nature.com/articles/s41598-020-67248-3 |
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crspringernat:10.1038/s41598-020-67248-3 2023-05-15T14:06:53+02:00 Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica Mergelov, Nikita Dolgikh, Andrey Shorkunov, Ilya Zazovskaya, Elya Soina, Vera Yakushev, Andrey Fedorov-Davydov, Dmitry Pryakhin, Sergey Dobryansky, Alexander 2020 http://dx.doi.org/10.1038/s41598-020-67248-3 http://www.nature.com/articles/s41598-020-67248-3.pdf http://www.nature.com/articles/s41598-020-67248-3 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Scientific Reports volume 10, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2020 crspringernat https://doi.org/10.1038/s41598-020-67248-3 2022-01-04T07:17:02Z Abstract The soils of East Antarctica have no rhizosphere with the bulk of organo-mineral interactions confined to the thin microbial and cryptogamic crusts that occur in open or cryptic niches and are collectively known as biological soil crust (BSC). Here we demonstrate that cryptic hypolithic varieties of BSC in the Larsemann Hills of East Antarctica contribute to the buildup of soil organic matter and produce several types of continuous organogenous horizons within the topsoil with documented clusters of at least 100 m 2 . Such hypolithic horizons accumulate 0.06–4.69% of organic carbon (TOC) with isotopic signatures (δ 13 C org ) within the range of −30.2 – −24.0‰, and contain from 0 to 0.38% total nitrogen (TN). The properties of hypolithic organic matter alternate between cyanobacteria- and moss-dominated horizons, which are linked to the meso- and microtopography patterns and moisture gradients. The major part of TOC that is stored in hypolithic horizons has modern or centenary 14 C age, while the minor part is stabilized on a millennial timescale through shallow burial and association with minerals. Our findings suggest that hypolithic communities create a “gateway” for organic carbon to enter depauperate soils of the Larsemann Hills and contribute to the carbon reservoir of the topsoil at a landscape level. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Springer Nature (via Crossref) East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Scientific Reports 10 1 |
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Open Polar |
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Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Multidisciplinary |
spellingShingle |
Multidisciplinary Mergelov, Nikita Dolgikh, Andrey Shorkunov, Ilya Zazovskaya, Elya Soina, Vera Yakushev, Andrey Fedorov-Davydov, Dmitry Pryakhin, Sergey Dobryansky, Alexander Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica |
topic_facet |
Multidisciplinary |
description |
Abstract The soils of East Antarctica have no rhizosphere with the bulk of organo-mineral interactions confined to the thin microbial and cryptogamic crusts that occur in open or cryptic niches and are collectively known as biological soil crust (BSC). Here we demonstrate that cryptic hypolithic varieties of BSC in the Larsemann Hills of East Antarctica contribute to the buildup of soil organic matter and produce several types of continuous organogenous horizons within the topsoil with documented clusters of at least 100 m 2 . Such hypolithic horizons accumulate 0.06–4.69% of organic carbon (TOC) with isotopic signatures (δ 13 C org ) within the range of −30.2 – −24.0‰, and contain from 0 to 0.38% total nitrogen (TN). The properties of hypolithic organic matter alternate between cyanobacteria- and moss-dominated horizons, which are linked to the meso- and microtopography patterns and moisture gradients. The major part of TOC that is stored in hypolithic horizons has modern or centenary 14 C age, while the minor part is stabilized on a millennial timescale through shallow burial and association with minerals. Our findings suggest that hypolithic communities create a “gateway” for organic carbon to enter depauperate soils of the Larsemann Hills and contribute to the carbon reservoir of the topsoil at a landscape level. |
format |
Article in Journal/Newspaper |
author |
Mergelov, Nikita Dolgikh, Andrey Shorkunov, Ilya Zazovskaya, Elya Soina, Vera Yakushev, Andrey Fedorov-Davydov, Dmitry Pryakhin, Sergey Dobryansky, Alexander |
author_facet |
Mergelov, Nikita Dolgikh, Andrey Shorkunov, Ilya Zazovskaya, Elya Soina, Vera Yakushev, Andrey Fedorov-Davydov, Dmitry Pryakhin, Sergey Dobryansky, Alexander |
author_sort |
Mergelov, Nikita |
title |
Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica |
title_short |
Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica |
title_full |
Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica |
title_fullStr |
Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica |
title_full_unstemmed |
Hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of East Antarctica |
title_sort |
hypolithic communities shape soils and organic matter reservoirs in the ice-free landscapes of east antarctica |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41598-020-67248-3 http://www.nature.com/articles/s41598-020-67248-3.pdf http://www.nature.com/articles/s41598-020-67248-3 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) |
geographic |
East Antarctica Larsemann Hills |
geographic_facet |
East Antarctica Larsemann Hills |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
Scientific Reports volume 10, issue 1 ISSN 2045-2322 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-67248-3 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766278901049327616 |