Dominance of particulate organic carbon in top mineral soils in cold regions
The largest stocks of soil organic carbon can be found in cold regions such as Arctic, subarctic and alpine biomes, which are warming faster than the global average. Discriminating between particulate and mineral-associated organic carbon can constrain the uncertainty of projected changes in global...
Published in: | Nature Geoscience |
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Online Access: | https://doi.org/10.1038/s41561-023-01354-5 https://hdl.handle.net/1959.7/uws:75801 |
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ftunivwestsyd:oai:researchdirect.westernsydney.edu.au:uws_75801 2024-04-28T08:09:26+00:00 Dominance of particulate organic carbon in top mineral soils in cold regions Garcia-Palacios, Pablo Bradford, Mark A. Benavente-Ferraces, Iria de Celis, Miguel Delgado Baquerizo, Manuel Garcia-Gil, Juan C. Gaitan, Juan Goni-Urtiaga, Asier Mueller, Carsten W. Panettieri, Marco Rey, Ana Saez-Sandino, Tadeo (R21365) Schuur, Edward A. Sokol, Noah W. Tedersoo, Leho Plaza, Cesar 2024 print 18 https://doi.org/10.1038/s41561-023-01354-5 https://hdl.handle.net/1959.7/uws:75801 eng eng U.K., Nature Publishing Group Nature Geoscience--1752-0894--1752-0908 Vol. 17 Issue. 2 No. pp: 145-150 XXXXXX - Unknown journal article 2024 ftunivwestsyd https://doi.org/10.1038/s41561-023-01354-5 2024-04-09T23:48:53Z The largest stocks of soil organic carbon can be found in cold regions such as Arctic, subarctic and alpine biomes, which are warming faster than the global average. Discriminating between particulate and mineral-associated organic carbon can constrain the uncertainty of projected changes in global soil organic carbon stocks. Yet carbon fractions are not considered when assessing the contribution of cold regions to land carbon–climate feedbacks. Here we synthesize field paired observations of particulate and mineral-associated organic carbon in the mineral layer, along with experimental warming data, to investigate whether the particulate fraction dominates in cold regions and whether this relates to higher soil organic carbon losses with warming than in other (milder) biomes. We show that soil organic carbon in the first 30 cm of mineral soil is dominated or co-dominated by particulate carbon in both permafrost and non-permafrost soils, and in Arctic and alpine ecosystems but not in subarctic environments. Our findings indicate that soil organic carbon is most vulnerable to warming in cold regions compared with milder biomes, with this vulnerability mediated by higher warming-induced losses of particulate carbon. The massive soil carbon accumulation in cold regions appears distributed predominantly in the more vulnerable particulate fraction rather than in the more persistent mineral-associated fraction, supporting the likelihood of a strong, positive land carbon–climate feedback. Article in Journal/Newspaper Arctic permafrost Subarctic University of Western Sydney (UWS): Research Direct Nature Geoscience 17 2 145 150 |
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University of Western Sydney (UWS): Research Direct |
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ftunivwestsyd |
language |
English |
topic |
XXXXXX - Unknown |
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XXXXXX - Unknown Garcia-Palacios, Pablo Bradford, Mark A. Benavente-Ferraces, Iria de Celis, Miguel Delgado Baquerizo, Manuel Garcia-Gil, Juan C. Gaitan, Juan Goni-Urtiaga, Asier Mueller, Carsten W. Panettieri, Marco Rey, Ana Saez-Sandino, Tadeo (R21365) Schuur, Edward A. Sokol, Noah W. Tedersoo, Leho Plaza, Cesar Dominance of particulate organic carbon in top mineral soils in cold regions |
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description |
The largest stocks of soil organic carbon can be found in cold regions such as Arctic, subarctic and alpine biomes, which are warming faster than the global average. Discriminating between particulate and mineral-associated organic carbon can constrain the uncertainty of projected changes in global soil organic carbon stocks. Yet carbon fractions are not considered when assessing the contribution of cold regions to land carbon–climate feedbacks. Here we synthesize field paired observations of particulate and mineral-associated organic carbon in the mineral layer, along with experimental warming data, to investigate whether the particulate fraction dominates in cold regions and whether this relates to higher soil organic carbon losses with warming than in other (milder) biomes. We show that soil organic carbon in the first 30 cm of mineral soil is dominated or co-dominated by particulate carbon in both permafrost and non-permafrost soils, and in Arctic and alpine ecosystems but not in subarctic environments. Our findings indicate that soil organic carbon is most vulnerable to warming in cold regions compared with milder biomes, with this vulnerability mediated by higher warming-induced losses of particulate carbon. The massive soil carbon accumulation in cold regions appears distributed predominantly in the more vulnerable particulate fraction rather than in the more persistent mineral-associated fraction, supporting the likelihood of a strong, positive land carbon–climate feedback. |
format |
Article in Journal/Newspaper |
author |
Garcia-Palacios, Pablo Bradford, Mark A. Benavente-Ferraces, Iria de Celis, Miguel Delgado Baquerizo, Manuel Garcia-Gil, Juan C. Gaitan, Juan Goni-Urtiaga, Asier Mueller, Carsten W. Panettieri, Marco Rey, Ana Saez-Sandino, Tadeo (R21365) Schuur, Edward A. Sokol, Noah W. Tedersoo, Leho Plaza, Cesar |
author_facet |
Garcia-Palacios, Pablo Bradford, Mark A. Benavente-Ferraces, Iria de Celis, Miguel Delgado Baquerizo, Manuel Garcia-Gil, Juan C. Gaitan, Juan Goni-Urtiaga, Asier Mueller, Carsten W. Panettieri, Marco Rey, Ana Saez-Sandino, Tadeo (R21365) Schuur, Edward A. Sokol, Noah W. Tedersoo, Leho Plaza, Cesar |
author_sort |
Garcia-Palacios, Pablo |
title |
Dominance of particulate organic carbon in top mineral soils in cold regions |
title_short |
Dominance of particulate organic carbon in top mineral soils in cold regions |
title_full |
Dominance of particulate organic carbon in top mineral soils in cold regions |
title_fullStr |
Dominance of particulate organic carbon in top mineral soils in cold regions |
title_full_unstemmed |
Dominance of particulate organic carbon in top mineral soils in cold regions |
title_sort |
dominance of particulate organic carbon in top mineral soils in cold regions |
publisher |
U.K., Nature Publishing Group |
publishDate |
2024 |
url |
https://doi.org/10.1038/s41561-023-01354-5 https://hdl.handle.net/1959.7/uws:75801 |
genre |
Arctic permafrost Subarctic |
genre_facet |
Arctic permafrost Subarctic |
op_relation |
Nature Geoscience--1752-0894--1752-0908 Vol. 17 Issue. 2 No. pp: 145-150 |
op_doi |
https://doi.org/10.1038/s41561-023-01354-5 |
container_title |
Nature Geoscience |
container_volume |
17 |
container_issue |
2 |
container_start_page |
145 |
op_container_end_page |
150 |
_version_ |
1797577805869875200 |