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Tropical Peatland Carbon Storage Linked To Global Latitudinal Trends In Peat Recalcitrance

Title: Tropical Peatland Carbon Storage Linked To Global Latitudinal Trends In Peat Recalcitrance.
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Name(s): Hodgkins, Suzanne B., author
Richardson, Curtis J., author
Dommain, Rene, author
Wang, Hongjun, author
Glaser, Paul H., author
Verbeke, Brittany, author
Winkler, B. Rose, author
Cobb, Alexander R., author
Rich, Virginia I., author
Missilmani, Malak, author
Flanagan, Neal, author
Ho, Mengchi, author
Hoyt, Alison M., author
Harvey, Charles F., author
Vining, S. Rose, author
Hough, Moira A., author
Moore, Tim R., author
Richard, Pierre J. H., author
De la Cruz, Florentino B., author
Toufaily, Joumana, author
Hamdan, Rasha, author
Cooper, William T., author
Chanton, Jeffrey P., author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2018-09-07
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: 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 low-latitude peat has lower carbohydrate and greater aromatic content than near-surface high-latitude 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 degrees 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.
Identifier: FSU_libsubv1_wos_000444014100015 (IID), 10.1038/s41467-018-06050-2 (DOI)
Keywords: permafrost thaw, chemistry, decomposition, dissolved organic-matter, brown-rot, ftir spectroscopy, greenhouse-gas fluxes, lignin content, northern minnesota, sub-arctic peatland
Publication Note: The publisher’s version of record is available at https://doi.org/10.1038/s41467-018-06050-2
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000444014100015
Owner Institution: FSU
Is Part Of: Nature Communications.
2041-1723
Issue: vol. 9

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Hodgkins, S. B., Richardson, C. J., Dommain, R., Wang, H., Glaser, P. H., Verbeke, B., … Chanton, J. P. (2018). Tropical Peatland Carbon Storage Linked To Global Latitudinal Trends In Peat Recalcitrance. Nature Communications. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000444014100015