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Latitudinal limits to the predicted increase of the peatland carbon sink with warming

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Author(s)

  • A. Gallego-Sala
  • Dan J. Charman
  • Simon Brewer
  • Susan Page
  • I Colin Prentice
  • Pierre Friedlingstein
  • Steve Moreton
  • Matthew J. Amesbury
  • David W. Beilman
  • S. Bjorck
  • Tatiana Blyakharchuk
  • Christopher Bochicchio
  • Robert K Booth
  • J Bunbury
  • Philip Camill
  • Donna Carless
  • Rodney A. Chimner
  • Michael Clifford
  • Elizabeth Cressey
  • F. De Vleeschouwer
  • Rixt de Jong
  • Barbara Fialkiewicz-Koziel
  • S Finkelstein
  • M Garneau
  • John Hribjlan
  • James Holmquist
  • Paul D M Hughes
  • Chris Jones
  • Miriam C. Jones
  • Edgar Karofeld
  • Eric S. Klein
  • Ulla Kokfelt
  • Atte Korhola
  • Terri Lacourse
  • Gael Le Roux
  • Mariusz Lamentowicz
  • David Large
  • Martin Lavoie
  • J Loisel
  • Helen Mackay
  • Glen MacDonald
  • Markku Makila
  • Gabriel Magnan
  • Katarzyna Marcisz
  • Antonio Martínez-Cortizas
  • Charly Massa
  • Paul Mathijssen
  • Dmitri Mauquoy
  • Timothy Mighall
  • Fraser J. G. Mitchell
  • Patrick Moss
  • Jonathan Nichols
  • POK Oksanen
  • Lisa Orme
  • Maara S. Packalen
  • Stephen J Robinson
  • Thomas P Roland
  • Nicole K. Sanderson
  • A. Britta K. Sannel
  • Noemí Silva-Sánchez
  • Natascha Steinberg
  • Graeme T. Swindles
  • T. Edward Turner
  • Joanna Uglow
  • Minna Väliranta
  • Simon Van Bellen
  • Marjolein van der Linden
  • Bas van Geel
  • Guoping Wang
  • Zicheng Yu
  • Joana Zaragoza-Castells
  • Yan Zhao

Department/unit(s)

Publication details

JournalNature Climate Change
DateAccepted/In press - 7 Aug 2018
DateE-pub ahead of print - 10 Sep 2018
DatePublished (current) - 1 Oct 2018
Issue number10
Volume8
Number of pages7
Pages (from-to)907-913
Early online date10/09/18
Original languageEnglish

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.

Bibliographical note

© 2018, Springer Nature. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

    Research areas

  • peatlands, carbon cycle, climate change, tropical peat, last millennium

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