Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance
Peatlands represent large terrestrial carbon banks. Given that most peat accumulates in boreal regions, where low temperatures and water saturation preserve organic matter, the existence of peat in (sub)tropical regions remains enigmatic. Here we examined peat and plant chemistry across a latitudina...
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ftpubman:oai:pure.mpg.de:item_2642820 2023-08-20T04:04:31+02:00 Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance Hodgkins, S. Richardson, C. Dommain, R. Wang, H. Glaser, P. Verbeke, B. Winkler, B. Cobb, A. Rich, V. Missilmani, M. Flanagan, N. Ho, M. Hoyt, A. Harvey, C. Vining, S. Hough, M. Moore, T. Richard, P. La Cruz, F. Toufaily, J. Hamdan, R. Cooper, W. Chanton, J. 2018-09-07 application/pdf application/zip http://hdl.handle.net/21.11116/0000-0002-1687-D http://hdl.handle.net/21.11116/0000-0002-1689-B http://hdl.handle.net/21.11116/0000-0002-168A-A unknown info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-018-06050-2 http://hdl.handle.net/21.11116/0000-0002-1687-D http://hdl.handle.net/21.11116/0000-0002-1689-B http://hdl.handle.net/21.11116/0000-0002-168A-A info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Nature Communications info:eu-repo/semantics/article 2018 ftpubman https://doi.org/10.1038/s41467-018-06050-2 2023-08-01T23:37:28Z Peatlands represent large terrestrial carbon banks. Given that most peat accumulates in boreal regions, where low temperatures and water saturation preserve organic matter, the existence of peat in (sub)tropical regions remains enigmatic. Here we examined peat and plant chemistry across a latitudinal transect from the Arctic to the tropics. Near-surface lowlatitude peat has lower carbohydrate and greater aromatic content than near-surface highlatitude peat, creating a reduced oxidation state and resulting recalcitrance. This recalcitrance allows peat to persist in the (sub)tropics despite warm temperatures. Because we observed similar declines in carbohydrate content with depth in high-latitude peat, our data explain recent field-scale deep peat warming experiments in which catotelm (deeper) peat remained stable despite temperature increases up to 9 °C. We suggest that high-latitude deep peat reservoirs may be stabilized in the face of climate change by their ultimately lower carbohydrate and higher aromatic composition, similar to tropical peats. Article in Journal/Newspaper Arctic Climate change Max Planck Society: MPG.PuRe Arctic Nature Communications 9 1 |
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Max Planck Society: MPG.PuRe |
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Peatlands represent large terrestrial carbon banks. Given that most peat accumulates in boreal regions, where low temperatures and water saturation preserve organic matter, the existence of peat in (sub)tropical regions remains enigmatic. Here we examined peat and plant chemistry across a latitudinal transect from the Arctic to the tropics. Near-surface lowlatitude peat has lower carbohydrate and greater aromatic content than near-surface highlatitude peat, creating a reduced oxidation state and resulting recalcitrance. This recalcitrance allows peat to persist in the (sub)tropics despite warm temperatures. Because we observed similar declines in carbohydrate content with depth in high-latitude peat, our data explain recent field-scale deep peat warming experiments in which catotelm (deeper) peat remained stable despite temperature increases up to 9 °C. We suggest that high-latitude deep peat reservoirs may be stabilized in the face of climate change by their ultimately lower carbohydrate and higher aromatic composition, similar to tropical peats. |
format |
Article in Journal/Newspaper |
author |
Hodgkins, S. Richardson, C. Dommain, R. Wang, H. Glaser, P. Verbeke, B. Winkler, B. Cobb, A. Rich, V. Missilmani, M. Flanagan, N. Ho, M. Hoyt, A. Harvey, C. Vining, S. Hough, M. Moore, T. Richard, P. La Cruz, F. Toufaily, J. Hamdan, R. Cooper, W. Chanton, J. |
spellingShingle |
Hodgkins, S. Richardson, C. Dommain, R. Wang, H. Glaser, P. Verbeke, B. Winkler, B. Cobb, A. Rich, V. Missilmani, M. Flanagan, N. Ho, M. Hoyt, A. Harvey, C. Vining, S. Hough, M. Moore, T. Richard, P. La Cruz, F. Toufaily, J. Hamdan, R. Cooper, W. Chanton, J. Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance |
author_facet |
Hodgkins, S. Richardson, C. Dommain, R. Wang, H. Glaser, P. Verbeke, B. Winkler, B. Cobb, A. Rich, V. Missilmani, M. Flanagan, N. Ho, M. Hoyt, A. Harvey, C. Vining, S. Hough, M. Moore, T. Richard, P. La Cruz, F. Toufaily, J. Hamdan, R. Cooper, W. Chanton, J. |
author_sort |
Hodgkins, S. |
title |
Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance |
title_short |
Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance |
title_full |
Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance |
title_fullStr |
Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance |
title_full_unstemmed |
Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance |
title_sort |
tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance |
publishDate |
2018 |
url |
http://hdl.handle.net/21.11116/0000-0002-1687-D http://hdl.handle.net/21.11116/0000-0002-1689-B http://hdl.handle.net/21.11116/0000-0002-168A-A |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Nature Communications |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-018-06050-2 http://hdl.handle.net/21.11116/0000-0002-1687-D http://hdl.handle.net/21.11116/0000-0002-1689-B http://hdl.handle.net/21.11116/0000-0002-168A-A |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1038/s41467-018-06050-2 |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
_version_ |
1774714894363394048 |