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Contemporary carbon fluxes do not reflect the long-term carbon balance for an Atlantic blanket bog

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  • Joshua Ratcliffe
  • roxane Andersen
  • Russell Anderson
  • anthony newton
  • David Campbell
  • dmitri mauquoy
  • Richard Payne


Publication details

JournalThe Holocene
DateAccepted/In press - 15 Jun 2017
DateE-pub ahead of print - 30 Jun 2017
DatePublished (current) - 1 Jan 2018
Issue number1
Number of pages10
Pages (from-to)140-149
Early online date30/06/17
Original languageEnglish


Peatlands are one of the largest terrestrial stores of carbon. Carbon exchange in peatlands is often assessed solely by measurement of contemporary fluxes; however, these fluxes frequently indicate a much stronger sink strength than that measured by the rate of C accumulation in the peat profile over longer timescales. Here we compare profile-based measurements of C accumulation with the published net ecosystem C balance for the largest peatland area in Britain, the Flow Country of northern Scotland. We estimate the long-term rate of C accumulation to be 15.4 g C m−2 yr−1 for a site where a recent eddy covariance study has suggested contemporary C uptake more than six times greater (99.37 g C m−2 yr−1). Our estimate is supported by two further long-term C accumulation records from nearby sites which give comparable results. We demonstrate that a strong contemporary C sink strength may not equate to a strong long-term sink and explore reasons for this disparity. We recommend that contemporary C sequestration should be viewed in the context of the long-term ecological drivers, such as fires, ecohydrological feedbacks and the changing quality of litter inputs.

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    Research areas

  • core scanning, Flow Country, ITRAX, LORCA, peat, Scotland, tephrochronology


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