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  • School of Geog & Sustainable Devt, Irvine Building, St Andrews, KY16 9AL, UK

Accepting Postgraduate Research Students

PhD projects

I am pleased to welcome enquiries and applications from prospective PhD students interested in pursuing research in the broad area of carbon dynamics in intertidal and marine sedimentary environments.

Personal profile

Research overview

My research is centred on the nexus between land and ocean systems and the interface between science and policy. I investigate the processes controlling carbon storage in coastal and marine sedimentary environments including saltmarshes, fjords, and continental‑shelf settings using field observations, geochemical analyses, and advanced spatial modelling.

Marine sediments and intertidal soils (saltmarsh, seagrass and mangroves) are capable of burying and storing globally significant quantities of carbon (sometimes referred to as Blue Carbon) away for thousands of years potentially providing a highly important climate mitigation service.

These sedimentary environments are recognised, as crucial components of the global carbon cycle, yet many unknowns remain hindering there inclusion in global climate models, national carbon accounting and greenhouse gas inventories.

To tackle this issue I bring together techniques from across the different geoscience disciplines (Geo- physics, chemistry, morphology, spatial analysis) to better understand:

  • The quantity of carbon held with marine and intertidal sediments.
  • The rate at which carbon is buried and locked away in these sedimentary environments.
  • The source of the carbon (terrestrial vs marine).
  • The natural and anthropogenic mechanisms that govern the preservation of carbon in these sedimentary systems.    

Geographically, my research is currently focused on the saltmarshes of the United Kingdom and continental shelf sediments in the North East Atlantic with particular focus on fjord sediments

Education/Academic qualification

Doctor of Science, Environmental Geography , University of St Andrews

5 Oct 201314 Nov 2018

Award Date: 14 Nov 2018

Master in Science, Sustainable Catchment Management , University of Dundee

15 Sept 200914 Sept 2010

Award Date: 10 Nov 2010

Keywords

  • GB Physical geography
  • Sediment
  • Carbon
  • Holocene
  • Fjords
  • saltmarsh
  • coastal
  • GE Environmental Sciences
  • Blue Carbon
  • Radiocarbon
  • Coastal
  • GC Oceanography
  • Coastal
  • shelf seas
  • Climate

Expertise related to UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):

  1. SDG 6 - Clean Water and Sanitation
    SDG 6 Clean Water and Sanitation
  2. SDG 13 - Climate Action
    SDG 13 Climate Action
  3. SDG 14 - Life Below Water
    SDG 14 Life Below Water
  4. SDG 15 - Life on Land
    SDG 15 Life on Land

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  • 1 Similar Profiles

Collaborations and top research areas from the last five years

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  • Blue nitrogen follows the fate of tidal wetlands

    Langley, J. A., Chapman, S. K., Wang, L., Maxwell, T. L., Rivera, P., Adame, M. F., Arias-Ortiz, A., Asanopoulos, C., Blanco, J. F., Breithaupt, J. L., Canty, S. W. J., Chambers, L. G., Cornwell, J. C., Craft, C., Cross, S., Feller, I. C., Friess, D. A., Grey, A., Holmquist, J. & Jones, S. F. & 22 others, Jupin, J. L. J., Kelleher, B. P., Kelleway, J. J., Kirwan, M. L., Krauss, K. W., Lovelock, C. E., McClellan, S. A., Megonigal, J. P., Morris, J. T., Morrissette, H., Neubauer, S. C., Pastore, M. A., Rogers, K., Rovai, A. S., Ruiz-Fernandez, A. C., Saintilan, N., Sanchez-Cabeza, J.-A., Simpson, L. T., Smeaton, C., Spivak, A. C., Steinmuller, H. E. & Weston, N. B., 23 Jun 2026, In: Earth's Future. 14, 6, 12 p., e2025EF006747.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    File
  • From fjord to shelf: drivers of organic carbon transformation and storage across connected marine sedimentary systems

    Smeaton, C., Hiles, W., Gulliver, P. & Austin, W. E. N., 11 May 2026, In: Global Biogeochemical Cycles. 40, 5, 15 p., e2025GB008738.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    File
  • Heterogenous thermochemical stability of sedimentary organic carbon in high-Arctic Svalbard fjords

    Zhang, X., Koziorowska, K., Yang, H., He, S., Ho, K., Yan, M., Smeaton, C., Bianchi, T. S. & Cui, X., 1 Apr 2026, In: Global Biogeochemical Cycles. 40, 4, 21 p., e2025GB008788.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    File
  • Long-term nitrogen burial exceeds denitrification in global fjords

    Cheung, H. L. S., Levin, L. S., Smeaton, C., Politi, T., Thamdrup, B., Santos, I. R. & Bonaglia, S., 1 Apr 2026, In: Nature Communications. 17, 9 p., 3148.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    File
  • Spatial heterogeneity of sedimentary organic carbon in fjords around Stavanger, Norway: implications for upscaling

    Diesing, M., Bøe, R., Elvenes, S., Knies , J. & Smeaton, C., 5 May 2026, In: Biogeosciences. 23, 9, p. 3005-3022 18 p.

    Research output: Contribution to journalArticlepeer-review

    Open Access
    File
  • Sedimentological and organic carbon data from the Kyle of Tongue saltmarsh, Scotland, 2018 (dataset)

    Smeaton, C. (Creator), Rees-Hughes, L. (Creator), Barlow, N. (Creator) & Austin, W. (Creator), NERC Environmental Information Data Centre, 25 Feb 2021

    Dataset

  • Radioisotope concentrations of soil samples from UK saltmarshes collected between 2018 and 2021

    Koot, M. (Creator), Blake, W. (Creator), Havelock, G. (Creator), Garrett, E. (Creator), Smeaton, C. (Creator), Barlow, N. (Creator) & Gehrels , R. (Creator), NERC Environmental Information Data Centre, 12 Jul 2025

    Dataset

  • Global soil organic carbon in tidal marshes version 1

    Maxwell, T. (Creator), Spalding, M. (Creator), Friess, D. (Creator), Murray, N. (Creator), Rodgers, K. (Creator), Rovai, A. (Creator), Smart, L. (Creator), Weilguny, L. (Creator), Adame, F. (Creator), Adams, J. (Creator), Copertino, M. (Creator), Cott, G. (Creator), Costa, M. (Creator), Holmquist, J. (Creator), Ladd, C. (Creator), Lovelock, C. (Creator), Ludwig, M. (Creator), Moritsch, M. (Creator), Navarro, A. (Creator), Raw, J. (Creator), Ruiz-Fernández, A.-C. (Creator), Serrano, O. (Creator), Smeaton, C. (Creator), Van de Broek, M. (Creator), Windham-Myers, L. (Creator), Landis, E. (Creator) & Worthington, T. (Creator), Zenodo, 30 May 2024

    Dataset

  • EURO-Carbon Full Dataset

    Lønborg, C. (Creator), Graversen, E. (Creator), Addamo, A. (Creator), Pedersen, S. (Creator), Silvia, C. (Creator), Alejo, I. (Creator), Apostolaki, E. (Creator), Asplund, M. (Creator), Austin, W. (Creator), Berov, D. (Creator), Berto, D. (Creator), Bjork, M. (Creator), Black, K. E. (Creator), Bobchev, N. (Creator), Bonaglia , S. (Creator), Borgersen, G. (Creator), Bouma, T. (Creator), Costello, M. (Creator), Dahl, M. (Creator), Diaz-Almela, E. (Creator), Dimitriou, P. (Creator), Duarte , C. (Creator), Duenas, C. (Creator), Efthymiadis , P. (Creator), Elosegui, I. (Creator), Espinosa, M. (Creator), Filipsson, H. (Creator), Fontela, M. (Creator), Stein, F. (Creator), Frigstad, H. (Creator), Gagnon, K. (Creator), Garcia-Escudero, A. (Creator), Giani, M. (Creator), Grouhel-Pellouin, A. (Creator), Guerra, R. (Creator), Gullstrom, M. (Creator), Gundersen , H. (Creator), Hancke, K. (Creator), Majtenyi-Hill, C. (Creator), Hunt, C. A. (Creator), Inostroza, K. (Creator), Karakassis, I. (Creator), Karamfilov, V. (Creator), Klayn, S. (Creator), Koziorowska-Makuch, K. (Creator), Kulinski, K. (Creator), Lavery, P. (Creator), Lenstra, W. (Creator), Lillebo, A. (Creator), Logemann, E. (Creator), Magni, P. (Creator), Marba, N. (Creator), Macro_mendez, C. (Creator), Martins, M. (Creator), Mateo, M. (Creator), Monnier, B. (Creator), Mueller, P. (Creator), Neto, J. (Creator), Papageorgiou, N. (Creator), Pardo, J. (Creator), Pena, A. (Creator), Pergent, G. (Creator), Pineiro-Juncal, N. (Creator), Preston, J. (Creator), Rampazzo, F. (Creator), Reithmaler, G. (Creator), Reusch, T. (Creator), Reynolds, S. (Creator), de Rezende, C. (Creator), Ricart, A. (Creator), Santos, R. (Creator), Santos, C. (Creator), Santos, I. (Creator), Serrano, E. (Creator), Serrano, O. (Creator), Slomp, C. (Creator), Smeaton, C. (Creator), Soler, M. (Creator), Sousa, A. (Creator), Spiegel, T. (Creator), Stevenson, A. (Creator), Thormar, J. (Creator), Trannum, H. (Creator), van Helmond, N. (Creator), Paradis, S. (Creator), Vizzini, S. (Creator), Ward, E. (Creator), Yan, Y. (Creator), Zakhama-Sraieb, R. (Creator), Zribi, I. (Creator), Zygadlowska, O. (Creator) & Krause Jensen, D. (Creator), Zenodo, 21 Feb 2025

    Dataset

  • Geochemical data for giant piston core MD04-2832 (Loch Sunart, Scotland)

    Smeaton, C. (Creator), Cui, X. (Creator), Bianchi , T. (Creator), Cage, A. (Creator), Howe, J. (Creator) & Austin, W. (Creator), National Geoscience Data Centre, 30 Jun 2021

    Dataset