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Latitudinal limits to the predicted increase of the peatland carbon sink with warming
File | Description | Size | Format | |
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Millipeat paper_submission_final_edited.docx | Accepted version | 1.68 MB | Microsoft Word | View/Open |
Title: | Latitudinal limits to the predicted increase of the peatland carbon sink with warming |
Authors: | Gallego-Sala, A Charman, D Brewer, S Page, S Prentice, IC Friedlingstein, P Moreton, S Amesbury, M Beilman, D Bjorck, S Blyakharchuk, T Bochicchio, C Booth, R Bunbury, J Camill, P Carless, D Chimner, R Clifford, M Cressey, E Courtney-Mustaphi, C De Vleeschouwer, F De Jong, R Fialkiewicz-Koziel, B Finkelstein, S Garneau, M Githumbi, E Hribjlan, J Hlmquist, J Hughes, P Jones, C Jones, M Karofeld, E Klein, E Kokfelt, U Korhola, A Lacourse, T Le Roux, G Lamentowicz, M Large, D Lavoie, M Loisel, J Mackay, H MacDonald, G Makila, M Magnan, G Marchant, R Marcisz, K Martinez Cortizas, A Massa, C Mathijssen, P Mauquoy, D Mighall, T Mitchell, F Moss, P Nichols, J Oksanen, P Orme, L Packalen, M Robinson, S Roland, T Sanderson, N Sannel, AB Silva-Sanchez, N Steinberg, N Swindles, G 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 |
Item Type: | Journal Article |
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. |
Issue Date: | 10-Sep-2018 |
Date of Acceptance: | 7-Aug-2018 |
URI: | http://hdl.handle.net/10044/1/63439 |
DOI: | https://dx.doi.org/10.1038/s41558-018-0271-1 |
ISSN: | 1758-678X |
Publisher: | Nature Publishing Group |
Start Page: | 907 |
End Page: | 913 |
Journal / Book Title: | Nature Climate Change |
Volume: | 8 |
Copyright Statement: | © 2018 Springer Nature Limited. All rights reserved. |
Sponsor/Funder: | Natural Environment Research Council (NERC) AXA Research Fund |
Funder's Grant Number: | NE/I013776/1 AXA Chair Programme in Biosphere and Climate Impacts |
Publication Status: | Published |
Appears in Collections: | Department of Life Sciences Faculty of Natural Sciences |