Carbon storage in UK intertidal environments

William E. N. Austin*, Craig Smeaton, Paulina Ruranska, David M. Paterson, Martin W. Skov, Cai J. T. Ladd, Lucy McMahon, Glenn M. Havelock, Roland Gehrels, Rob Mills, Natasha L. M. Barlow, Annette Burden, Laurence Jones, Angus Garbutt

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

Abstract

We report on the progress to assess the carbon stocks in UK saltmarsh habitats, highlighting best practice in achieving national-scale assessments, including advances in field, laboratory and data methods. New understanding of coring disturbance highlights sediment compaction and its influence on carbon stock assessment; improvements in remote sensing methods are outlined and approaches to upscaling for carbon stock assessment described. Here, we introduce the first UK-specific saltmarsh conversion for loss-on-ignition (LOI) estimates of soil organic matter (OM) to soil organic carbon (OC). The underlying drivers that determine the spatial distribution, magnitude and future vulnerability of these important natural capital assets are assessed, highlighting the significance of long-term sea-level drivers in shaping UK coastal environments and carbon stocks. The potential for management interventions that safeguard these long-term carbon stores through the protection, restoration and creation of saltmarsh habitats, are also assessed. We highlight the emergent national policy opportunities for the inclusion of saltmarsh habitats in the UK greenhouse gas inventory, providing an important first step necessary to account for, protect, and restore these long-term carbon stores, realising their potential for climate change mitigation.
Original languageEnglish
Title of host publicationChallenges in estuarine and coastal science
Subtitle of host publicationEstuarine and Coastal Sciences Association 50th anniversary volume
EditorsJohn Humphreys, Sally Little
Place of PublicationExeter
PublisherPelagic Publishing
Chapter9
ISBN (Electronic)9781784272869
ISBN (Print)9781784272852
DOIs
Publication statusPublished - 7 Mar 2022

Keywords

  • Saltmarsh
  • Carbon storage
  • Sea-level change
  • Managed realignment

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