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Conference Paper/Proceeding/Abstract 223 views

Sedimentation and carbon accumulation rates in UK saltmarshes

Ed Garrett Orcid Logo, Craig Smeaton Orcid Logo, W. Roland Gehrels Orcid Logo, Natasha Barlow, Will Blake, Martha B. Koot Orcid Logo, Lucy Miller, Glenn Havelock, Lucy McMahon, Cai Ladd Orcid Logo, William Austin Orcid Logo

EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023

Swansea University Author: Cai Ladd Orcid Logo

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DOI (Published version): 10.5194/egusphere-egu23-12459

Abstract

Saltmarshes play a key role in sequestering and storing carbon, as well as providing a wide range of other ecosystem services. Assessments of both total carbon stocks and rates of carbon accumulation are vital for quantifying saltmarsh contributions to climate-change mitigation and for guiding effor...

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Published in: EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023
Published: Copernicus GmbH
Online Access: http://dx.doi.org/10.5194/egusphere-egu23-12459
URI: https://cronfa.swan.ac.uk/Record/cronfa64473
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first_indexed 2023-09-19T08:08:58Z
last_indexed 2023-09-19T08:08:58Z
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spelling v2 64473 2023-09-08 Sedimentation and carbon accumulation rates in UK saltmarshes 134c870190db4c365e2ccc2d6c107462 0000-0001-5437-6474 Cai Ladd Cai Ladd true false 2023-09-08 SGE Saltmarshes play a key role in sequestering and storing carbon, as well as providing a wide range of other ecosystem services. Assessments of both total carbon stocks and rates of carbon accumulation are vital for quantifying saltmarsh contributions to climate-change mitigation and for guiding efforts to protect and restore coastal wetlands. Current assessments of the rates at which UK saltmarshes accumulate carbon are based on a small and spatially limited dataset. To address this knowledge gap, we estimate sedimentation rates and assess organic carbon density from 22 saltmarshes distributed around the UK. Bayesian modelling quantifies the relationship between depth and age from 210Pb and 137Cs activity data. We combine these sedimentation rates with centimetre-resolution organic carbon density measurements to quantify carbon accumulation rates through time. By upscaling these estimates to the total UK saltmarsh area and fully quantifying uncertainties, we conclude that UK saltmarsh carbon burial rates are lower than previously thought. Conference Paper/Proceeding/Abstract EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023 Copernicus GmbH Saltmarshes, sedimentation, carbon accumulation, sequestration 0 0 0 0001-01-01 10.5194/egusphere-egu23-12459 http://dx.doi.org/10.5194/egusphere-egu23-12459 COLLEGE NANME Geography COLLEGE CODE SGE Swansea University 2023-10-20T11:06:25.9457485 2023-09-08T09:56:50.5030988 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Ed Garrett 0000-0001-9985-0651 1 Craig Smeaton 0000-0003-4535-2555 2 W. Roland Gehrels 0000-0002-5088-5834 3 Natasha Barlow 4 Will Blake 5 Martha B. Koot 0000-0002-3591-6903 6 Lucy Miller 7 Glenn Havelock 8 Lucy McMahon 9 Cai Ladd 0000-0001-5437-6474 10 William Austin 0000-0001-6544-3468 11
title Sedimentation and carbon accumulation rates in UK saltmarshes
spellingShingle Sedimentation and carbon accumulation rates in UK saltmarshes
Cai Ladd
title_short Sedimentation and carbon accumulation rates in UK saltmarshes
title_full Sedimentation and carbon accumulation rates in UK saltmarshes
title_fullStr Sedimentation and carbon accumulation rates in UK saltmarshes
title_full_unstemmed Sedimentation and carbon accumulation rates in UK saltmarshes
title_sort Sedimentation and carbon accumulation rates in UK saltmarshes
author_id_str_mv 134c870190db4c365e2ccc2d6c107462
author_id_fullname_str_mv 134c870190db4c365e2ccc2d6c107462_***_Cai Ladd
author Cai Ladd
author2 Ed Garrett
Craig Smeaton
W. Roland Gehrels
Natasha Barlow
Will Blake
Martha B. Koot
Lucy Miller
Glenn Havelock
Lucy McMahon
Cai Ladd
William Austin
format Conference Paper/Proceeding/Abstract
container_title EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023
institution Swansea University
doi_str_mv 10.5194/egusphere-egu23-12459
publisher Copernicus GmbH
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
url http://dx.doi.org/10.5194/egusphere-egu23-12459
document_store_str 0
active_str 0
description Saltmarshes play a key role in sequestering and storing carbon, as well as providing a wide range of other ecosystem services. Assessments of both total carbon stocks and rates of carbon accumulation are vital for quantifying saltmarsh contributions to climate-change mitigation and for guiding efforts to protect and restore coastal wetlands. Current assessments of the rates at which UK saltmarshes accumulate carbon are based on a small and spatially limited dataset. To address this knowledge gap, we estimate sedimentation rates and assess organic carbon density from 22 saltmarshes distributed around the UK. Bayesian modelling quantifies the relationship between depth and age from 210Pb and 137Cs activity data. We combine these sedimentation rates with centimetre-resolution organic carbon density measurements to quantify carbon accumulation rates through time. By upscaling these estimates to the total UK saltmarsh area and fully quantifying uncertainties, we conclude that UK saltmarsh carbon burial rates are lower than previously thought.
published_date 0001-01-01T11:06:27Z
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score 11.014358

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