Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 6
Articles | Volume 23, issue 6
https://doi.org/10.5194/bg-23-2155-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-2155-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 6
Research article
 | 
30 Mar 2026
Research article |  | 30 Mar 2026

Characterisation and quantification of organic carbon burial using a multiproxy approach in saltmarshes from Aotearoa New Zealand

Olga Albot, Joshua Ratcliffe, Richard Levy, Sebastian Naeher, Daniel J. King, Catherine Ginnane, Jocelyn Turnbull, Mary Jill Ira Banta, Christopher Wood, Jenny Dahl, Jannine Cooper, and Andy Phillips
Publisher's note: on 2 April 2026 the country of affiliation 7 was corrected from USA to New Zealand.

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Short summary
Saltmarshes store carbon in their soils, contributing to climate change mitigation. We analysed five sites across New Zealand and found that carbon storage and accumulation rates vary widely with geomorphic setting, land use history and sediment inputs. Plant material was a major source of carbon in the soil and has been preserved in basal sediments for several centuries. These results improve national blue carbon estimates and highlight the role of saltmarshes as natural climate solutions.
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