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A marine and salt marsh sediment organic carbon database for European regional seas (EURO-CARBON)
Journal article   Open access   Peer reviewed

A marine and salt marsh sediment organic carbon database for European regional seas (EURO-CARBON)

Anna Elizabeth Løvgren Graversen, Christian Lønborg, Anna Maria Addamo, Sidsel Gurholt Pedersen, Silvia Chemello, Irene Alejo, Eugenia T. Apostolaki, Maria E. Asplund, William E.N. Austin, Dimitar Berov, …
Data in brief, Vol.60, pp.1-32
06/2025
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A marine and salt marsh sediment organic carbon databaseView
Published (Version of record) Open CC BY V4.0

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Abstract

blue carbon marine sediments salt marsh seagrass sediment organic carbon
Marine and salt marsh sediments contain large amounts of organic carbon (OC) and are therefore important in the global carbon cycle. Here, we collated previously published and unpublished measurements of sediment OC in marine and salt marsh sediments in European regional seas (EURO-CARBON; available at https://doi.org/10.5281/zenodo.14905489). To the extent possible the OC data were complemented by variables such as dry bulk density which are important to explain the quantity of the sediment OC pool. The EURO-CARBON dataset holds 61306 individual data entries of OC sediment content from different regions of European regional seas. Around three quarters (76%) were collected in coastal and deep sea bare sediments, 18% from salt marshes, 7% from seagrass habitats, and 0.03% from macroalgal habitats. For all habitats and sediment depth layers the OC content varied between <0.1 and 41.56 % (avg.: 2.47 ± 3.37 %; median: 1.39 %), with the contents generally decreasing in the following sequence: salt marsh (5.01 ± 5.96 %; 3.03 %) > seagrass (2.37 ± 5.96 %; 3.03 %) > bare sediment (1.88 ± 2.03 %; 1.20 %). The EURO-CARBON dataset will serve as a basis for future work, and it will be an important resource for researchers, managers, and policymakers working towards protecting sediment OC pools.

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