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Title: Latitudinal limits to the predicted increase of the peatland carbon sink with warming
Authors: Gallego-Sala, A
Charman, DJ
Brewer, S
Page, SE
Prentice, IC
Friedlingstein, P
Moreton, S
Amesbury, MJ
Beilman, DW
Bjorck, S
Blyakharchuk, T
Bochicchio, C
Booth, RK
Bunbury, J
Camill, P
Carless, D
Chimner, RA
Clifford, M
Cressey, E
Courtney-Mustaphi, C
De Vleeschouwer, F
de Jong, R
Fialkiewicz-Koziel, B
Finkelstein, SA
Garneau, M
Githumbi, E
Hribjlan, J
Holmquist, J
Hughes, PDM
Jones, C
Jones, MC
Karofeld, E
Klein, ES
Kokfelt, U
Korhola, A
Lacourse, T
Le Roux, G
Lamentowicz, M
Large, D
Lavoie, M
Loisel, J
Mackay, H
MacDonald, GM
Makila, M
Magnan, G
Marchant, R
Marcisz, K
Martinez Cortizas, A
Massa, C
Mathijssen, P
Mauquoy, D
Mighall, T
Mitchell, FJG
Moss, P
Nichols, J
Oksanen, PO
Orme, L
Packalen, MS
Robinson, S
Roland, TP
Sanderson, NK
Sannel, ABK
Silva-Sanchez, N
Steinberg, N
Swindles, GT
Turner, TE
Uglow, J
Valiranta, M
van Bellen, S
van der Linden, M
van Geel, B
Wang, G
Yu, Z
Zaragoza-Castells, J
Zhao, Y
First Published: 10-Sep-2018
Publisher: Nature Research (part of Springer Nature)
Citation: NATURE CLIMATE CHANGE, 2018, 8 (10), pp. 907-+ (8)
Abstract: The carbon sink potential of peatlands depends on the balance of carbon uptake by plants and microbial decomposition. The rates of both these processes will increase with warming but it remains unclear which will dominate the global peatland response. Here we examine the global relationship between peatland carbon accumulation rates during the last millennium and planetary-scale climate space. A positive relationship is found between carbon accumulation and cumulative photosynthetically active radiation during the growing season for mid- to high-latitude peatlands in both hemispheres. However, this relationship reverses at lower latitudes, suggesting that carbon accumulation is lower under the warmest climate regimes. Projections under Representative Concentration Pathway (RCP)2.6 and RCP8.5 scenarios indicate that the present-day global sink will increase slightly until around AD 2100 but decline thereafter. Peatlands will remain a carbon sink in the future, but their response to warming switches from a negative to a positive climate feedback (decreased carbon sink with warming) at the end of the twenty-first century.
DOI Link: 10.1038/s41558-018-0271-1
ISSN: 1758-678X
eISSN: 1758-6798
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2018, Springer Nature. Deposited with reference to the publisher’s open access archiving policy. (
Appears in Collections:Published Articles, Dept. of Geography

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