Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance

Suzanne B. Hodgkins, Curtis J. Richardson, René Dommain, Hongjun Wang, Paul H Glaser, Brittany Verbeke, B. Rose Winkler, Alexander R. Cobb, Virginia I. Rich, Malak Missilmani, Neal Flanagan, Mengchi Ho, Alison M. Hoyt, Charles F. Harvey, S. Rose Vining, Moira A. Hough, Tim R. Moore, Pierre J.H. Richard, Florentino B. De La Cruz, Joumana Toufaily & 3 others Rasha Hamdan, William T. Cooper, Jeffrey P. Chanton

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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 °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.

Original languageEnglish (US)
Article number3640
JournalNature communications
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2018

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peat
Peat
Soil
Carbon
trends
carbon
carbohydrates
tropical regions
polar regions
Tropics
Carbohydrates
Temperature
subtropical regions
Climate Change
climate change
Climate change
Biological materials
chemistry

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

Cite this

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, 9(1), [3640]. https://doi.org/10.1038/s41467-018-06050-2

Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance. / Hodgkins, Suzanne B.; Richardson, Curtis J.; Dommain, René; Wang, Hongjun; Glaser, Paul H; Verbeke, Brittany; Winkler, B. Rose; Cobb, Alexander R.; Rich, Virginia I.; Missilmani, Malak; Flanagan, Neal; Ho, Mengchi; Hoyt, Alison M.; Harvey, Charles F.; Vining, S. Rose; Hough, Moira A.; Moore, Tim R.; Richard, Pierre J.H.; De La Cruz, Florentino B.; Toufaily, Joumana; Hamdan, Rasha; Cooper, William T.; Chanton, Jeffrey P.

In: Nature communications, Vol. 9, No. 1, 3640, 01.12.2018.

Research output: Contribution to journalArticle

Hodgkins, SB, Richardson, CJ, Dommain, R, Wang, H, Glaser, PH, Verbeke, B, Winkler, BR, Cobb, AR, Rich, VI, Missilmani, M, Flanagan, N, Ho, M, Hoyt, AM, Harvey, CF, Vining, SR, Hough, MA, Moore, TR, Richard, PJH, De La Cruz, FB, Toufaily, J, Hamdan, R, Cooper, WT & Chanton, JP 2018, 'Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance', Nature communications, vol. 9, no. 1, 3640. https://doi.org/10.1038/s41467-018-06050-2
Hodgkins, Suzanne B. ; Richardson, Curtis J. ; Dommain, René ; Wang, Hongjun ; Glaser, Paul H ; Verbeke, Brittany ; Winkler, B. Rose ; Cobb, Alexander R. ; Rich, Virginia I. ; Missilmani, Malak ; Flanagan, Neal ; Ho, Mengchi ; Hoyt, Alison M. ; Harvey, Charles F. ; Vining, S. Rose ; Hough, Moira A. ; Moore, Tim R. ; Richard, Pierre J.H. ; De La Cruz, Florentino B. ; Toufaily, Joumana ; Hamdan, Rasha ; Cooper, William T. ; Chanton, Jeffrey P. / Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance. In: Nature communications. 2018 ; Vol. 9, No. 1.
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